Gertjan Ettema

Om

Bakgrunn og aktiviteter

Phd (1990) i bevegelsesvitenskap, VU Univeristy Amsterdam.

Undervisning: Biomekanikk av menneskelig bevegelse (og motorisk kontroll).

Forskning: Biomekanikk og arbeidsfysiologi av motorisk adferd og idrettsprestasjon

Jobber ved Senter for toppidrettsforskning (SenTIF)

Publikasjoner

2025

Ettema, Gerardus Johannes Cornelis; Danielsen, Jørgen; Øvstehage, Vemund; Skovereng, Knut. (2025) On the estimation of total muscle work done in human walking. Journal of Experimental Biology
Vitenskapelig artikkel
Skovereng, Knut; Sandbakk, Øyvind Bucher; Ettema, Gertjan; Noordhof, Dionne Adriana; Seeberg, Trine Margrethe; Kocbach, Jan Martin; Danielsen, Jørgen. (2025) The effect of work rate on metabolic and mechanical intensity measures across skating style sub-techniques in cross-country skiing. European Journal of Sport Science (EJSS)
Vitenskapelig artikkel
Severin, Anna Cecilia; Ettema, Gertjan; Kocbach, Jan Martin. (2025) A method for processing inertial measurement unit data for para-Nordic sit-ski race analysis: a step-by-step guide. Sports Engineering
Vitenskapelig artikkel

2024

Elfmark, Ola Anker; Sandbakk, Øyvind Bucher; Brevig, Magnus; Ettema, Gertjan. (2024) Performance and jump-to-jump development in the first female ski flying competition in history. Frontiers in Sports and Active Living
Vitenskapelig artikkel
Eythorsdottir, Ingrid Eir Thorp; Gløersen, Øyvind; Rice, Hannah; Werkhausen, Amelie; Ettema, Gertjan; Mentzoni, Fredrik; Solberg, Paul Andre; Lindberg, Kolbjørn Andreas; Paulsen, Gøran. (2024) The Battle of the Equations: A Systematic Review of Jump Height Calculations Using Force Platforms. Sports Medicine
Vitenskapelig oversiktsartikkel

2023

Ettema, Gertjan; Sandbakk, Øyvind Bucher. (2023) Utvikling av teknikk.
Faglig kapittel
Haugnes, Pål; Kocbach, Jan Martin; Noordhof, Dionne Adriana; Talsnes, Rune Kjøsen; Ettema, Gertjan; Sandbakk, Øyvind Bucher. (2023) The influence of tactical positioning on performance in sprint cross-country skiing. PLOS ONE
Vitenskapelig artikkel
Ettema, Gertjan. (2023) The Force–Velocity Profiling Concept for Sprint Running Is a Dead End. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig oversiktsartikkel
Loland, Sigmund; Ettema, Gertjan; Sandbakk, Øyvind Bucher. (2023) The study of movement skills in sports: toward an integrative approach. Frontiers in Psychology
Vitenskapelig artikkel
Ettema, Gertjan; Skovereng, Knut; Ritman, Tobias Elvevold; Danielsen, Jørgen. (2023) The role of external power demand on the choice of technique in classic cross-country skiing. PLOS ONE
Vitenskapelig artikkel
Ettema, Gertjan. (2023) Incorporating internal work leads to overestimations of total work in sprint running. European Journal of Applied Physiology
Kommentar
Haugnes, Pål; Sandbakk, Øyvind Bucher; Ettema, Gertjan; Noordhof, Dionne Adriana. (2023) Doctoral theses at NTNU (2023:235) "Sprinting for the win in cross-country skiing: Pacing strategy, race tactics, and the finish sprint". NTNU Grafisk senter
Doktoravhandling

2022

Ettema, Gertjan; Haug, Aurora Aasrud; Ludvigsen, Tonje Pedersen; Danielsen, Jørgen. (2022) The role of stroke rate and intensity on rowing technique. Sports Biomechanics
Vitenskapelig artikkel
Elfmark, Ola; Ettema, Gertjan; Gilgien, Matthias. (2022) Assessment of the steady glide phase in ski jumping. Journal of Biomechanics
Vitenskapelig artikkel
Haugnes, Pål; Kocbach, Jan; Talsnes, Rune Kjøsen; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2022) Race tactics in the heats of a sprint cross-country skiing competition. Swedish Winter Sports Research Centre at Mid Sweden University
Antologi
Elfmark, Ola; Ettema, Gertjan; Jølstad, Petter Andre; Gilgien, Matthias. (2022) Kinematic Determination of the Aerial Phase in Ski Jumping. Sensors
Vitenskapelig artikkel
Haugnes, Pål; Kocbach, Jan; Talsnes, Rune Kjøsen; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2022) The influence of race tactics for performance in the heats of an international sprint cross-country skiing competition. PLOS ONE
Vitenskapelig artikkel

2021

Severin, Cecilia; Danielsen, Jørgen; Erichsen, Jorgen Falck; Eikevåg, Sindre Wold; Steinert, Martin; Ettema, Gertjan; Baumgart, Julia Kathrin. (2021) Case Report: Adjusting Seat and Backrest Angle Improves Performance in an Elite Paralympic Rower. Frontiers in Sports and Active Living
Vitenskapelig artikkel
Sandbakk, Øyvind; Haugen, Thomas André; Ettema, Gerardus Johannes C. (2021) The influence of exercise modality on training load management. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Danielsen, Jørgen; Sandbakk, Øyvind; McGhie, David Caley Ruud; Ettema, Gertjan. (2021) Mechanical energy and propulsion mechanics in roller-skiing double-poling at increasing speeds. PLOS ONE
Vitenskapelig artikkel
Hansen, Linda Marie; Sandbakk, Øyvind; Ettema, Gertjan; Baumgart, Julia Kathrin. (2021) Upper- vs. Lower-Body Exercise Performance in Female and Male Cross-Country Skiers. Frontiers in Sports and Active Living
Vitenskapelig artikkel
Sandbakk, Øyvind; Haugen, Thomas André; Ettema, Gertjan. (2021) The influence of exercise modality on training load management. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Baumgart, Julia Kathrin; Ettema, Gertjan; Griggs, Katy E.; Goosey-Tolfrey, Victoria Louise; Leicht, Christof Andreas. (2021) A Reappraisal of Ventilatory Thresholds in Wheelchair Athletes With a Spinal Cord Injury: Do They Really Exist?. Frontiers in Physiology
Vitenskapelig artikkel
Elfmark, Ola; Ettema, Gertjan. (2021) Aerodynamic investigation of the inrun position in Ski jumping. Sports Biomechanics
Vitenskapelig artikkel
Elfmark, Ola; Ettema, Gertjan; Groos, Daniel; Ihlen, Espen Alexander F.; Velta, Rune; Haugen, Per; Bråten, Steinar; Gilgien, Matthias. (2021) Performance analysis in ski jumping with a differential global navigation satellite system and video-based pose estimation. Sensors
Vitenskapelig artikkel
Noordhof, Dionne; Danielsson, Marius Lyng; Skovereng, Knut; Danielsen, Jørgen; Seeberg, Trine Margrethe; Haugnes, Pål; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2021) The dynamics of the anaerobic energy contribution during a simulated mass-start competition while roller-ski skating on a treadmill. Frontiers in Sports and Active Living
Vitenskapelig artikkel

2020

Dalen, Terje; Aune, Tore Kristian; Hjelde, Geir Håvard; Ettema, Gertjan; Sandbakk, Øyvind; McGhie, David. (2020) Player load in male elite soccer: Comparisons of patterns between matches and positions. PLOS ONE
Vitenskapelig artikkel
McGhie, David; Østerås, Sindre; Ettema, Gertjan; Paulsen, Gøran; Sandbakk, Øyvind. (2020) Strength Determinants of Jump Height in the Jump Throw Movement in Women Handball Players. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
Skovereng, Knut; Aasvold, Lorents Ola; Ettema, Gertjan. (2020) On the effect of changing handgrip position on joint specific power and cycling kinematics in recreational and professional cyclists. PLOS ONE
Vitenskapelig artikkel
Ettema, Gertjan; Braaten, Steinar; Danielsen, Jørgen; Fjeld, Birk Eirik. (2020) Imitation jumps in ski jumping: Technical execution and relationship to performance level. Journal of Sports Sciences
Vitenskapelig artikkel
Luchsinger, Harri Simon; Kocbach, Jan; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2020) Contribution from cross-country skiing, start time and shooting components to the overall and isolated biathlon pursuit race performance. PLOS ONE
Vitenskapelig artikkel
Kolsung, Erik Borg; Ettema, Gertjan; Skovereng, Knut. (2020) Physiological Response to Cycling With Variable Versus Constant Power Output. Frontiers in Physiology
Vitenskapelig artikkel
Løkkeborg, Johannes Alnes; Ettema, Gerardus Johannes C. (2020) The role of incline, speed and work rate on the choice of technique in classical roller skiing. PLOS ONE
Vitenskapelig artikkel

2019

Almquist, Nicki Winfield; Ettema, Gertjan; Hopker, James; Sandbakk, Øyvind; Rønnestad, Bent. (2019) The Effect of 30-Second Sprints During Prolonged Exercise on Gross Efficiency, Electromyography, and Pedaling Technique in Elite Cyclists. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Haugen, Thomas André; McGhie, David; Ettema, Gertjan. (2019) Sprint running: from fundamental mechanics to practice -a review. European Journal of Applied Physiology
Vitenskapelig oversiktsartikkel
Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2019) The Contribution From Cross-Country Skiing and Shooting Variables on Performance Level and Sex Differences in Biathlon World Cup Individual Races. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Aasvold, Lorents Ola; Ettema, Gertjan; Skovereng, Knut. (2019) Joint specific power production in cycling: The effect of cadence and intensity. PLOS ONE
Vitenskapelig artikkel
Ettema, Gertjan; McGhie, David. (2019) Biomekanikk og bevegelse.
Faglig kapittel
Rasdal, Vegard Finserås; Ettema, Gertjan; Sandbakk, Øyvind. (2019) Concurrent optimization of two extremes: performance, physiological, and training characteristics of world class Nordic combined athletes. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Danielsen, Jørgen; Sandbakk, Øyvind; McGhie, David; Ettema, Gertjan. (2019) Mechanical energetics and dynamics of uphill double-poling on roller-skis at different incline-speed combinations. PLOS ONE
Vitenskapelig artikkel
Haugnes, Pål; Kocbach, Jan; Luchsinger, Harri; Ettema, Gertjan; Sandbakk, Øyvind. (2019) The Interval-Based Physiological and Mechanical Demands of Cross-Country Ski Training. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
McGhie, David; Sandbakk, Øyvind; Østerås, Sindre; Ettema, Gertjan. (2019) Is There a Trade-Off Between Maximum Jumping and Throwing Capability in the Handball Jump Throw?. Sage Open
Vitenskapelig artikkel

2018

Haugnes, Pål; Torvik, Per Øyvind; Ettema, Gertjan; Kocbach, Jan; Sandbakk, Øyvind. (2018) The Effect of Maximal Speed Ability, Pacing Strategy and Technique on the Finish-Sprint of a Sprint Cross-Country Skiing Competition. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Haugen, Thomas André; Danielsen, Jørgen; Alnes, Leif Olav; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2018) On the importance of “front-side mechanics” in athletics sprinting. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Bolger, Conor; Bessone, Veronica; Federolf, Peter Andreas; Ettema, Gertjan; Sandbakk, Øyvind. (2018) The influence of increased distal loading on metabolic cost, efficiency, and kinematics of roller ski skating. PLOS ONE
Vitenskapelig artikkel
Baumgart, Julia Kathrin; Moes, Maaike; Skovereng, Knut; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Examination of gas exchange and blood lactate thresholds in Paralympic athletes during upper-body poling. PLOS ONE
Vitenskapelig artikkel
Ettema, Gertjan; Øksnes, Magne; Kveli, Espen; Sandbakk, Øyvind. (2018) The effect of exhaustive exercise on the choice of technique and physiological response in classical roller skiing. European Journal of Applied Physiology
Vitenskapelig artikkel
Baumgart, Julia Kathrin; Gurtler, Laura; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Comparison of peak oxygen uptake and exercise efficiency between upper-body poling and arm crank ergometry in trained paraplegic and able-bodied participants. European Journal of Applied Physiology
Vitenskapelig artikkel
Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Comparison of the Effects of Performance Level and Sex on Sprint Performance in the Biathlon World Cup. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Danielsen, Jørgen; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Energetics and dynamics of double poling cross-country skiing. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling

2017

Haugen, Thomas; Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2017) Kinematic stride cycle asymmetry is not associated with sprint performance and injury prevalence in athletic sprinters. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
Rasdal, Vegard; Fudel, Ronny; Kocbach, Jan; Moen, Frode; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Association between laboratory capacities and world-cup performance in Nordic combined. PLOS ONE
Vitenskapelig artikkel
Ettema, Gertjan; Kveli, Espen; Øksnes, Magne; Sandbakk, Øyvind. (2017) The role of speed and incline in the spontaneous choice of technique in classical roller-skiing. Human Movement Science
Vitenskapelig artikkel
Haugnes, Pål; Kocbach, Jan; Torvik, Per Øyvind; Ekren, Thomas; Ettema, Gertjan; Sandbakk, Øyvind. (2017) How fast are cross-country skiers in the finish-sprint during a sprint competition? Book of Abstracts: "Performance in snow sports: Translating science into practice". Swedish winter sports research centre, Mid Sweden University
Forskningsrapport
Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2017) The effect of exercise intensity on joint power and dynamics in ergometer double-poling performed by cross-country skiers. Human Movement Science
Vitenskapelig oversiktsartikkel
Skovereng, Knut; Ettema, Gertjan; Beekvelt, Mireille Van. (2017) The effect of cadence on shank muscle oxygen consumption and deoxygenation in relation to joint specific power and cycling kinematics. PLOS ONE
Vitenskapelig artikkel
Dahl, Christine; Sandbakk, Øyvind; Danielsen, Jørgen; Ettema, Gertjan. (2017) The role of power fluctuations in the preference of diagonal vs. double poling sub-technique at different incline-speed combinations in elite cross-country skiers. Frontiers in Physiology
Vitenskapelig artikkel
Vandbakk, Kristine; Welde, Boye; Kruken, Andrea Hovstein; Baumgart, Julia Kathrin; Ettema, Gertjan; Karlsen, Trine; Sandbakk, Øyvind. (2017) Effects of upper-body sprint-interval training on strength and endurance capacities in female cross-country skiers. PLOS ONE
Vitenskapelig artikkel

2016

Ettema, Gerardus Johannes C; Hooiveld, Jo; Braaten, Steinar; Boobert, Maarten. (2016) How do elite ski jumpers handle the dynamic conditions in imitation jumps?. Journal of Sports Sciences
Vitenskapelig artikkel
Luchsinger, Harri; Sandbakk, Øyvind; Schubert, Michael; Ettema, Gerardus Johannes C; Baumeister, Jochen. (2016) A Comparison of Frontal Theta Activity During Shooting among Biathletes and Cross-Country Skiers before and after Vigorous Exercise. PLOS ONE
Vitenskapelig artikkel
Østerås, Sindre; Welde, Boye; Danielsen, Jørgen; van den Tillaar, Roland; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2016) Contribution of upper-body strength, body composition, and maximal oxygen uptake to predict double poling power and overall performance in female cross-country skiers. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gertjan. (2016) Mechanical energy and work in treadmill double poling on roller skis.
Vitenskapelig kapittel
Aune, Tore Kristian; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2016) Bilateral asymmetry in upper extremities is More pronounced in distal compared to proximal joints. Journal of Motor Behavior
Vitenskapelig artikkel
Dalen, Terje; Ingebrigtsen, Jørgen; Ettema, Gerardus Johannes C; Hjelde, Geir Håvard; Wisløff, Ulrik. (2016) Player load, acceleration, and deceleration during forty-five competitive matches of elite soccer. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
Sandbakk, Øyvind; Rasdal, Vegard; Bråten, Steinar; Moen, Frode; Ettema, Gerardus Johannes C. (2016) How do world-class Nordic Combined athletes differ from specialized cross-country skiers and ski jumpers in sport-specific capacity and training characteristics?. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Bolger, Conor; Sandbakk, Øyvind; Ettema, Gertjan; Federolf, Peter Andreas. (2016) How hinge positioning in cross-country ski bindings affect exercise efficiency, cycle characteristics and muscle coordination during submaximal roller skiing. PLOS ONE
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; McGhie, David; Danielsen, Jørgen; Sandbakk, Øyvind; Haugen, Thomas André. (2016) On the existence of step-to-step breakpoint transitions in accelerated sprinting. PLOS ONE
Vitenskapelig artikkel
Haugnes, Pål; Kocbach, Jan; Luchsinger, Harri; Munkebye, Øyvind; Ettema, Gertjan; Sandbakk, Øyvind. (2016) Heart rate profiles, external work rate and kinematics when ski skating on varying terrain during low-, moderate-, and high-intensity endurance training. University of Salzburg
Antologi
Skovereng, Knut; Ettema, Gerardus Johannes C; Beekvelt, Mireille Van. (2016) Oxygenation, local muscle oxygen consumption and joint specific power in cycling: the effect of cadence at a constant external work rate. European Journal of Applied Physiology
Vitenskapelig artikkel

2015

Danielsen, Jørgen; Sandbakk, Øyvind; Holmberg, Hans-Christer; Ettema, Gerardus Johannes C. (2015) Mechanical Energy and Propulsion in Ergometer Double Poling by Cross-country Skiers. Medicine & Science in Sports & Exercise
Vitenskapelig artikkel
Skovereng, Knut; Ettema, Gerardus Johannes C; Beekvelt, Mireille Van. (2015) Local muscle oxygen consumption related to external and joint specific power. Human Movement Science
Vitenskapelig artikkel
Bucher, Elias; Danielsen, Jørgen; Hegge, Ann Magdalen; Faude, Oliver; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2015) Technique differences between male and female cross-country skiers while whole body, upper body and arm poling on a ski ergometer.
Vitenskapelig kapittel
Sandbakk, Øyvind; Skålvik, Tommy Fredriksen; Spencer, Matthew; Beekvelt, Mireille Van; Welde, Boye; Hegge, Ann Magdalen; Gjøvaag, Terje; Ettema, Gerardus Johannes C. (2015) The physiological responses to repeated upper-body sprint exercise in highly trained athletes. European Journal of Applied Physiology
Vitenskapelig artikkel
Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Faude, Oliver; Holmberg, Hans-Christer; Sandbakk, Øyvind. (2015) Gender differences in power production, energetic capacity and efficiency of elite cross-country skiers during whole-body, upper-body, and arm poling. European Journal of Applied Physiology
Vitenskapelig artikkel

2014

Hegge, Ann Magdalen; Ettema, Gerardus Johannes C; Koning, Jos de; Rognstad, Asgeir Bakken; Hoset, Martin; Sandbakk, Øyvind. (2014) The effects of the arm swing on biomechanical and physiological aspects of roller ski skating. Human Movement Science
Vitenskapelig artikkel
Grasaas, Erik; Hegge, Ann Magdalen; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) The effects of poling on physiological, kinematic and kinetic responses in roller ski skating. European Journal of Applied Physiology
Vitenskapelig artikkel
Sandbakk, Øyvind; Hansen, Mads; Ettema, Gerardus Johannes C; Rønnestad, Bent. (2014) The effects of heavy upper-body strength training on ice sledge hockey sprint abilities in world class players. Human Movement Science
Vitenskapelig artikkel
Sandbakk, Øyvind; Leirdal, Stig; Ettema, Gerardus Johannes C. (2014) The physiological and biomechanical differences between double poling and G3 skating in world class cross-country skiers. European Journal of Applied Physiology
Vitenskapelig artikkel
Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2014) Joint-specific power contribution at increasing double poling intensities.
Vitenskapelig kapittel
Sandbakk, Øyvind; Spencer, Matthew; Ettema, Gerardus Johannes C; Bucher, Silvana Andrea; Skovereng, Knut; Welde, Boye. (2014) The Physiology and Biomechanics of Upper-Body Repeated Sprints in Ice Sledge Hockey. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Grasaas, Christina Åsan; Ettema, Gertja; Hegge, Ann Magdalen H. S.; Skovereng, Knut; Sandbakk, Øyvind. (2014) Changes in Technique and Efficiency After High-Intensity Exercise in Cross-Country Skiers. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Skovereng, Knut; Beekvelt, Mireille Van; Ettema, Gerardus Johannes C. (2014) The effect of cadence on hip, knee and ankle contribution during cycling exercise.
Vitenskapelig kapittel
Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Comparison of arm, upper body and whole body double poling in female and male cross-country skiers.
Vitenskapelig kapittel
Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Efficiency in endurance exercise: efficiency of what.
Vitenskapelig kapittel
Sandbakk, Øyvind; Holmberg, Hans-Christer; Ettema, Gerardus Johannes C. (2014) The role of gross mechanical efficiency in endurance sports.
Vitenskapelig kapittel

2013

McGhie, David Caley Ruud; Ettema, Gerardus Johannes C. (2013) Biomechanical analysis of traction at the shoe-surface interface on third-generation artificial turf. Sports Engineering
Vitenskapelig artikkel
Hoset, Martin; Rognstad, Asgeir Bakken; Rølvåg, Terje; Ettema, Gertja; Sandbakk, Øyvind. (2013) Construction of an instrumented roller ski and validation of three-dimensional forces in the skating technique. Sports Engineering
Vitenskapelig artikkel
Skovereng, Knut; Ettema, Gertja; Beekvelt, Mireille V.; Sandbakk, Øyvind. (2013) Pulmonary oxygen consumption and oxygenation of upper-body muscles during isolated upper body poling at different exercise intensities.
Vitenskapelig kapittel
Ettema, Gertja; Skålvik, Tommy; Spencer, Matthew; Sandbakk, Øyvind. (2013) Performance and coordination in repeated sprint exercise for the upper body.
Vitenskapelig kapittel
Sandbakk, Øyvind; Hansen, Mads; Rønnestad, Bent; Ettema, Gertjan. (2013) Effects of heavy strength training on upper-body strength, power and sprint performance in ice sledge hockey.
Vitenskapelig kapittel
Bardal, Ellen Marie; Olsen, Trond Vegar; Ettema, Gerardus Johannes C; Mork, Paul Jarle. (2013) Metabolic rate, cardiac response, and aerobic capacity in fibromyalgia: A case-control study. Scandinavian Journal of Rheumatology
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gertja. (2013) A Comparison of Muscle Activity in Concentric and Counter Movement Maximum Bench Press. The Journal of Human Kinetics
Vitenskapelig artikkel
Aune, Tore Kristian; Aune, Morten Andreas; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2013) Comparison of bilateral force deficit in proximal and distal joints in upper extremities. Human Movement Science
Vitenskapelig artikkel
Sandbakk, Øyvind; Hegge, Ann Magdalen H. S.; Ettema, Gertjan. (2013) The role of incline, performance level and gender on the gross mechanical efficiency of roller ski skating. Frontiers in Physiology
Vitenskapelig artikkel
Leirdal, Stig; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2013) Effects of frequency on gross efficiency and performance in roller ski skating. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Ettema, Gerardus Johannes C; Welde, Boye. (2013) Effects of Intensity and Duration in Aerobic High-Intensity Interval Training in Highly Trained Junior Cross-Country Skiers. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
McGhie, David; Ettema, Gertja. (2013) On the "trench effect" theory: A biomechanical analysis of the relationship between traction and shoe orientation on third-generation artificial turf. Footwear Science
Vitenskapelig artikkel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2013) The physiological and biomechanical contributions of poling to roller ski skating. European Journal of Applied Physiology
Vitenskapelig artikkel
Skovereng, Knut; Ettema, Gerardus Johannes C; Welde, Boye; Sandbakk, Øyvind. (2013) On the relationship between upper-body strength, power and sprint performance in ice sledge hockey. Journal of Strength and Conditioning Research
Vitenskapelig artikkel

2012

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2012) Gender differences in endurance performance by elite cross-country skiers are influenced by the contribution from poling. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
Supej, Matej; Oggiano, Luca; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2012) Differences in air drag among elite male alpine skiers.
Vitenskapelig kapittel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2012) The influence of incline and speed on work rate, gross efficiency and kinematics of roller ski skating. European Journal of Applied Physiology
Vitenskapelig artikkel
van den Tillaar, Roland; Sæterbakken, Atle; Ettema, Gerardus Johannes C. (2012) Is the occurrence of the sticking region the result of diminishing potentiation in bench press?. Journal of Sports Sciences
Vitenskapelig artikkel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Holmberg, Hans-Christer. (2012) Gender differences in the physiological responses and kinematic behaviour of elite sprint cross-country skiers. European Journal of Applied Physiology
Vitenskapelig artikkel
Supej, Matej; Sætran, Lars Roar; Oggiano, Luca; Ettema, Gerardus Johannes C; Sarabon, N; Nemec, B; Holmberg, H.C.. (2012) Aerodynamic drag is not the major determinant of performance during giant slalom skiing at the elite level. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
Andersson, E.; Stöggl, T; Pellegrini, B.; Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2012) Biomechanical analysis of the herringbone technique as employed by elite cross-country skiers. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
McGhie, David; Ettema, Gerardus Johannes C. (2012) Biomechanical analysis of traction at the shoe-surface interface on third generation artificial turf. Procedia Engineering
Vitenskapelig artikkel
Leirdal, Stig; Ettema, Gerardus Johannes C. (2012) Cycling.
Kapittel i oppslagsverk
Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Skovereng, Knut; Welde, Boye; Ettema, Gerardus Johannes C. (2012) The Physiology of World Class Sledge Ice-Hockey.
Vitenskapelig kapittel
McGhie, David; Ettema, Gerardus Johannes C. (2012) Biomechanical Analysis of Surface-Athlete Impacts on Third-Generation Artificial Turf. American Journal of Sports Medicine
Vitenskapelig artikkel
Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Ettema, Gerardus Johannes C; Welde, Boye. (2012) Effects of intensity and duration in aerobic high-intensity interval training.
Vitenskapelig kapittel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2012) Efficiency in cross-country skiing. A brief review.
Vitenskapelig kapittel
Skovereng, Knut; Ettema, Gerardus Johannes C; Welde, Boye; Sandbakk, Øyvind. (2012) Relationships between Upper-Body Maximal Strength, Power and Sprint Performance in Sledge Ice-Hockey.
Vitenskapelig kapittel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, HC. (2012) The contribution from poling increases gender differences in elite cross-country skiers.
Vitenskapelig kapittel

2011

Sandbakk, Øyvind; Holmberg, Hans-Christer; Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) The physiology of world-class sprint skiers. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
McGhie, David; Ettema, Gerardus Johannes C. (2011) The effect of cadence on timing of muscle activation and mechanical output in cycling: On the activation dynamics hypothesis. Journal of Electromyography & Kinesiology
Vitenskapelig artikkel
Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) The relationship between cadence, pedaling technique and gross efficiency in cycling. European Journal of Applied Physiology
Vitenskapelig artikkel
Sommervoll, Yngve; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2011) Effects of age, task, and frequency on variability of finger tapping. Perceptual and Motor Skills
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2011) A comparison of kinematics between overarm throwing with 20% underweight, regular, and 20% overweight balls. Journal of Applied Biomechanics
Vitenskapelig artikkel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Jakobsen, Vidar Eivind; Holmberg, Hans-Christer. (2011) Analysis of a sprint ski race and associated laboratory determinants of world-class performance. European Journal of Applied Physiology
Vitenskapelig artikkel
Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) Pedaling Technique and Energy Cost in Cycling. Medicine & Science in Sports & Exercise
Vitenskapelig artikkel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2011) Effects of Speed and Slope on Ski Skating Efficiency and Kinematics. Medicine & Science in Sports & Exercise
Konferanseabstract

2010

Sandbakk, Øyvind; Holmberg, Hans-Christer; Leirdal, Stig; Ettema, Gerardus Johannes C. (2010) Metabolic rate and gross efficiency at high work rates in world class and national level sprint skiers. European Journal of Applied Physiology
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2010) The "sticking period" in a maximum bench press. Journal of Sports Sciences
Vitenskapelig artikkel
Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2010) The effect of gender and training experience on body segments' contributions in overarm throwing. International Journal of Sport Psychology
Konferanseabstract

2009

Ettema, Gerardus Johannes C; Lorås, Håvard Wuttudal; Leirdal, Stig. (2009) The effects of cycling cadence on the phases of joint power, crank power, force and force effectiveness. Journal of Electromyography & Kinesiology
Vitenskapelig artikkel
Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) Freely chosen pedal rate during free cycling on a roller and ergometer cycling. European Journal of Applied Physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Lorås, Håvard Wuttudal. (2009) Efficiency in cycling: a review. European Journal of Applied Physiology
Vitenskapelig oversiktsartikkel
Lorås, Håvard Wuttudal; Ettema, Gerardus Johannes C; Leirdal, Stig. (2009) The Muscle Force Component in Pedaling Retains Constant Direction Across Pedaling Rates. Journal of Applied Biomechanics
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2009) Is there a proximal-to-distal sequence in overarm throwing in team handball?. Journal of Sports Sciences
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2009) A comparison of overarm throwing with the dominant and nondominant arm in experienced team handball players. Perceptual and Motor Skills
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2009) A Comparison of Successful and Unsuccessful Attempts in Maximal Bench Pressing. Medicine & Science in Sports & Exercise
Vitenskapelig artikkel

2008

Ettema, Gerardus Johannes C; Gløsen, Tommy; van den Tillaar, Roland. (2008) Effect of specific strength training on overarm throwing performance. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Leirdal, Stig; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2008) Coordination Specificity in Strength and Power Training. International Journal of Sports Medicine (IJSM)
Vitenskapelig artikkel
Oggiano, Luca; Sætran, Lars Roar; Leirdal, Stig; Ettema, Gerardus Johannes C. (2008) Aerodynamic optimization and energy saving of cycling postures for international elite level cyclists.
Vitenskapelig kapittel
Aune, Tore Kristian; Ingvaldsen, Rolf Petter; Ettema, Gerardus Johannes C. (2008) Effect of physical fatigue on motor control at different skill levels. Perceptual and Motor Skills
Vitenskapelig artikkel

2007

van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2007) A three-dimensional analysis of overarm throwing in experienced handball players. Journal of Applied Biomechanics
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Hooiveld, Jo; Bråten, Steinar; Bobbert, Maarten F. (2007) The possible use of horizontal propulsion in imitation ski jumps.
Vitenskapelig kapittel
Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2007) The effect of rate of force development on maximal force production: acute and training-related aspects. European Journal of Applied Physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Bråten, Steinar. (2007) On the role of the location of centre of mass in ski jumping.
Vitenskapelig kapittel

2006

van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2006) A comparison of kinematics between novices and experts in overarm throwing under influence of type of instruction. Perceptual and Motor Skills
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2006) The sticking point in bench pressing.
Vitenskapelig kapittel
Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2006) A comparison of male throwing athletes and unskilled males when performing an overarm throwing task.
Vitenskapelig kapittel
Ettema, Gerardus Johannes C. (2006) On the proximal-distal sequence in explosive actions: the role of transfer of momentum.
Vitenskapelig kapittel
Kristensen, Geir Olav; van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2006) Velocity Specificity in Early-Phase Sprint Training. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2006) Effects of gender and training experience on kinematical and temporal aspects of overarm throwing technique. Norges Teknisk-Naturvitenskapelige Universitet, Program for Bevegelsesvitenskap
Masteroppgave
Leirdal, Stig; Sætran, Lars Roar; Roeleveld, Karin; Vereijken, Beatrix; Bråten, Steinar; Bråten, Steinar; Løset, Sveinung; Holtermann, Andreas; Ettema, Gerardus Johannes C. (2006) Effects of Body Position on Slide Boarding Performance by Cross-Country Skiers. Medicine & Science in Sports & Exercise
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2006) A comparison of performance and kinematics in throwing with the dominant and non-dominant arm in handball players.
Vitenskapelig kapittel
Ettema, Gerardus Johannes C; Bråten, Steinar. (2006) On the role of the location of centre of mass in ski jumping.
Vitenskapelig kapittel

2005

Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2005) Changes in agonist EMG activation level during MVC cannot explain early strength improvement. European Journal of Applied Physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Braten, S; Bobbert, MF. (2005) Dynamics of the in-run in ski jumping: A simulation study. Journal of Applied Biomechanics
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Taylor, E; North, JD; Kippers, V. (2005) Muscle synergies at the elbow in static and oscillating isometric torque tasks with dual degrees of freedom. Motor Control
Vitenskapelig artikkel

2004

van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2004) A force velocity relationship and coordination patterns in overarm throwing. Journal of Sports Science and Medicine (JSSM)
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2004) Effect of body size and gender in overarm throwing performance. European Journal of Applied Physiology
Vitenskapelig artikkel
Tillaar, R van den; Ettema, Gerardus Johannes C. (2004) Effect of body size and gender in overarm throwing performance. European Journal of Applied Physiology
Vitenskapelig artikkel

2003

Leirdal, Stig; Ettema, Gerardus Johannes C. (2003) Utholdenhet: Energifrigjøring, prestasjonsfaktorer, trening, tilpasninger og testing. Pensum Topptrenerstudiet Olympiatoppen-NTNU. [Mangler utgivernavn]
Arbeidsnotat
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2003) Influence of instruction on velocity and accuracy of overarm throwing. Perceptual and Motor Skills
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2003) Effects of instruction, emphasizing on velocity, accuracy or both on the performance and kinematics in overarm throwing. Perceptual and Motor Skills
Vitenskapelig artikkel
Tillaar, R van den; Ettema, Gerardus Johannes C. (2003) Instructions emphasizing velocity, accuracy, or both in performance and kinematics of overarm throwing by experienced team handball players. Perceptual and Motor Skills
Vitenskapelig artikkel

2002

Toussaint, Gerthory; Pedersen, Atle; Oterhals, Geir; Fiskvik, Anne Margrete; Ettema, Gerardus Johannes C; Bongaardt, Robert; Bakka, Egil; Audsen, Kjetil; Vereijken, Beatrix; Hokland, Jørn. (2002) La det swinge! Om kropp og bevegelse.
Vitenskapelig kapittel
Ettema, Gerardus Johannes C. (2002) Effects of contraction history on control and stability in explosive actions. Journal of Electromyography & Kinesiology
Vitenskapelig artikkel

2001

Ettema, Gerardus Johannes C. (2001) Muscle efficiency: the controversial role of elasticity and mechanical energy conversion in stretch-shortening cycles. European Journal of Applied Physiology
Vitenskapelig artikkel

2000

Ettema, Gerardus Johannes C. (2000) Physiological and biomechanical constraints: muscle mechanics & motor action. [Mangler utgivernavn]
Arbeidsnotat
Ettema, Gerardus Johannes C. (2000) Biomechanics: classic mechanics applied to the musculoskeletal system in a functional setting. [Mangler utgivernavn]
Arbeidsnotat
Ettema, Gerardus Johannes C. (2000) Motor behaviour: notes on neuro-physiology. [Mangler utgivernavn]
Arbeidsnotat
Ettema, Gerardus Johannes C; Meijer, Kenneth. (2000) Muscle contraction history: modified Hill versus an exponential decay model. Biological cybernetics
Vitenskapelig artikkel

1999

Ettema, Gerardus Johannes C. (1999) Human movement from a biological perspective:differentiation of subsystems and biological organisation. Corpus, Psyche et Societas
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Roeleveld, Karin; van den Tillaar, Roland. (1999) Biologi i Grunnfag Idrett (IDR105) på internet. [Mangler utgivernavn]
Arbeidsnotat
Ettema, Gerardus Johannes C. (1999) Modelling skeletal muscle-tendon units as actuators in motor behaviour: morphological aspects. Corpus, Psyche et Societas
Vitenskapelig artikkel

1998

Ettema, Gerardus Johannes C; Forwood, Mark R; Goh, Judith TW. (1998) A new method to measure elastic properties of plastic-viscoelastic connective tissue. Medical Engineering and Physics
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Styles, George; Kippers, Vaughan. (1998) The moment arms of 23 muscles of the upper limb in different elbow and forearm positions. Human Movement Science
Vitenskapelig artikkel
Walshe, Andrew; Wilson, Greg J; Ettema, Gerardus Johannes C. (1998) Stretch shorten cycle as compared to isometric preload: contributions to enhanced muscular performance. Journal of applied physiology
Vitenskapelig artikkel

1997

Ettema, Gerardus Johannes C. (1997) The Human Musculoskeletal System. [Mangler utgivernavn]
Arbeidsnotat
Ettema, Gerardus Johannes C. (1997) Mechanical behaviour of rat skeletal muscle during fatiguing stretch-shorten cycles. Experimental Physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1997) Muscle length and force generation in bipedal and quadrupedal animals in relation to joint ankles and locomotor behaviour. Anatomical Record
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1997) Mechanical behaviour of rat skeletal muscle during fatiguing stretch-shorten cycles. Experimental Physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1997) Gastrocnemius muscle length in relation to knee and ankle joint angles: verification of a geometric model and some applications. Anatomical Record
Vitenskapelig artikkel

1996

Ettema, Gerardus Johannes C. (1996) Innovations in teaching musculoskeletal anatomy. [Mangler utgivernavn]
Forskningsrapport
Ettema, Gerardus Johannes C; Kippers, Vaughan. (1996) Proceedings of the 1996 Conference of the anatomical society of Australia and New Zealand. [Mangler utgivernavn]
Forskningsrapport
Ettema, Gerardus Johannes C. (1996) Mechanical efficiency and efficiency of storage and release of series elastic energy in skeletal muscle during stretch-shorten cycles. Journal of Experimental Biology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1996) Contractile behaviour in rat gastrocnemius muscle during small amplitude sine wave perturbations. Journal of Biomechanics
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1996) Elastic - and length-force characteristics of the gastrocnemius of the hopping mouse (notomys alexis) and the rat (rattus norvegicus). Journal of Experimental Biology
Vitenskapelig artikkel

Tidsskriftspublikasjoner

Ettema, Gerardus Johannes Cornelis; Danielsen, Jørgen; Øvstehage, Vemund; Skovereng, Knut. (2025) On the estimation of total muscle work done in human walking. Journal of Experimental Biology
Vitenskapelig artikkel
Almquist, Nicki Winfield; Ettema, Gertjan; Hopker, James; Sandbakk, Øyvind; Rønnestad, Bent. (2019) The Effect of 30-Second Sprints During Prolonged Exercise on Gross Efficiency, Electromyography, and Pedaling Technique in Elite Cyclists. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Lorås, Håvard Wuttudal; Leirdal, Stig. (2009) The effects of cycling cadence on the phases of joint power, crank power, force and force effectiveness. Journal of Electromyography & Kinesiology
Vitenskapelig artikkel
Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) Freely chosen pedal rate during free cycling on a roller and ergometer cycling. European Journal of Applied Physiology
Vitenskapelig artikkel
Hegge, Ann Magdalen; Ettema, Gerardus Johannes C; Koning, Jos de; Rognstad, Asgeir Bakken; Hoset, Martin; Sandbakk, Øyvind. (2014) The effects of the arm swing on biomechanical and physiological aspects of roller ski skating. Human Movement Science
Vitenskapelig artikkel
Danielsen, Jørgen; Sandbakk, Øyvind; Holmberg, Hans-Christer; Ettema, Gerardus Johannes C. (2015) Mechanical Energy and Propulsion in Ergometer Double Poling by Cross-country Skiers. Medicine & Science in Sports & Exercise
Vitenskapelig artikkel
Skovereng, Knut; Ettema, Gerardus Johannes C; Beekvelt, Mireille Van. (2015) Local muscle oxygen consumption related to external and joint specific power. Human Movement Science
Vitenskapelig artikkel
Severin, Cecilia; Danielsen, Jørgen; Erichsen, Jorgen Falck; Eikevåg, Sindre Wold; Steinert, Martin; Ettema, Gertjan; Baumgart, Julia Kathrin. (2021) Case Report: Adjusting Seat and Backrest Angle Improves Performance in an Elite Paralympic Rower. Frontiers in Sports and Active Living
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Lorås, Håvard Wuttudal. (2009) Efficiency in cycling: a review. European Journal of Applied Physiology
Vitenskapelig oversiktsartikkel
Grasaas, Erik; Hegge, Ann Magdalen; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) The effects of poling on physiological, kinematic and kinetic responses in roller ski skating. European Journal of Applied Physiology
Vitenskapelig artikkel
Sandbakk, Øyvind; Holmberg, Hans-Christer; Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) The physiology of world-class sprint skiers. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
McGhie, David; Ettema, Gerardus Johannes C. (2011) The effect of cadence on timing of muscle activation and mechanical output in cycling: On the activation dynamics hypothesis. Journal of Electromyography & Kinesiology
Vitenskapelig artikkel
Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) The relationship between cadence, pedaling technique and gross efficiency in cycling. European Journal of Applied Physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1999) Human movement from a biological perspective:differentiation of subsystems and biological organisation. Corpus, Psyche et Societas
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2006) A comparison of kinematics between novices and experts in overarm throwing under influence of type of instruction. Perceptual and Motor Skills
Vitenskapelig artikkel
Haugnes, Pål; Torvik, Per Øyvind; Ettema, Gertjan; Kocbach, Jan; Sandbakk, Øyvind. (2018) The Effect of Maximal Speed Ability, Pacing Strategy and Technique on the Finish-Sprint of a Sprint Cross-Country Skiing Competition. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Sandbakk, Øyvind; Haugen, Thomas André; Ettema, Gerardus Johannes C. (2021) The influence of exercise modality on training load management. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Sandbakk, Øyvind; Hansen, Mads; Ettema, Gerardus Johannes C; Rønnestad, Bent. (2014) The effects of heavy upper-body strength training on ice sledge hockey sprint abilities in world class players. Human Movement Science
Vitenskapelig artikkel
McGhie, David Caley Ruud; Ettema, Gerardus Johannes C. (2013) Biomechanical analysis of traction at the shoe-surface interface on third-generation artificial turf. Sports Engineering
Vitenskapelig artikkel
Haugen, Thomas André; McGhie, David; Ettema, Gertjan. (2019) Sprint running: from fundamental mechanics to practice -a review. European Journal of Applied Physiology
Vitenskapelig oversiktsartikkel
Danielsen, Jørgen; Sandbakk, Øyvind; McGhie, David Caley Ruud; Ettema, Gertjan. (2021) Mechanical energy and propulsion mechanics in roller-skiing double-poling at increasing speeds. PLOS ONE
Vitenskapelig artikkel
Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2019) The Contribution From Cross-Country Skiing and Shooting Variables on Performance Level and Sex Differences in Biathlon World Cup Individual Races. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Aasvold, Lorents Ola; Ettema, Gertjan; Skovereng, Knut. (2019) Joint specific power production in cycling: The effect of cadence and intensity. PLOS ONE
Vitenskapelig artikkel
Skovereng, Knut; Sandbakk, Øyvind Bucher; Ettema, Gertjan; Noordhof, Dionne Adriana; Seeberg, Trine Margrethe; Kocbach, Jan Martin; Danielsen, Jørgen. (2025) The effect of work rate on metabolic and mechanical intensity measures across skating style sub-techniques in cross-country skiing. European Journal of Sport Science (EJSS)
Vitenskapelig artikkel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2012) Gender differences in endurance performance by elite cross-country skiers are influenced by the contribution from poling. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
Hoset, Martin; Rognstad, Asgeir Bakken; Rølvåg, Terje; Ettema, Gertja; Sandbakk, Øyvind. (2013) Construction of an instrumented roller ski and validation of three-dimensional forces in the skating technique. Sports Engineering
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Hooiveld, Jo; Braaten, Steinar; Boobert, Maarten. (2016) How do elite ski jumpers handle the dynamic conditions in imitation jumps?. Journal of Sports Sciences
Vitenskapelig artikkel
Kristensen, Geir Olav; van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2006) Velocity Specificity in Early-Phase Sprint Training. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2012) The influence of incline and speed on work rate, gross efficiency and kinematics of roller ski skating. European Journal of Applied Physiology
Vitenskapelig artikkel
Sommervoll, Yngve; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2011) Effects of age, task, and frequency on variability of finger tapping. Perceptual and Motor Skills
Vitenskapelig artikkel
Haugen, Thomas André; Danielsen, Jørgen; Alnes, Leif Olav; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2018) On the importance of “front-side mechanics” in athletics sprinting. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Leirdal, Stig; Sætran, Lars Roar; Roeleveld, Karin; Vereijken, Beatrix; Bråten, Steinar; Bråten, Steinar; Løset, Sveinung; Holtermann, Andreas; Ettema, Gerardus Johannes C. (2006) Effects of Body Position on Slide Boarding Performance by Cross-Country Skiers. Medicine & Science in Sports & Exercise
Vitenskapelig artikkel
Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2005) Changes in agonist EMG activation level during MVC cannot explain early strength improvement. European Journal of Applied Physiology
Vitenskapelig artikkel
van den Tillaar, Roland; Sæterbakken, Atle; Ettema, Gerardus Johannes C. (2012) Is the occurrence of the sticking region the result of diminishing potentiation in bench press?. Journal of Sports Sciences
Vitenskapelig artikkel
Danielsen, Jørgen; Sandbakk, Øyvind; McGhie, David; Ettema, Gertjan. (2019) Mechanical energetics and dynamics of uphill double-poling on roller-skis at different incline-speed combinations. PLOS ONE
Vitenskapelig artikkel
Dalen, Terje; Aune, Tore Kristian; Hjelde, Geir Håvard; Ettema, Gertjan; Sandbakk, Øyvind; McGhie, David. (2020) Player load in male elite soccer: Comparisons of patterns between matches and positions. PLOS ONE
Vitenskapelig artikkel
McGhie, David; Østerås, Sindre; Ettema, Gertjan; Paulsen, Gøran; Sandbakk, Øyvind. (2020) Strength Determinants of Jump Height in the Jump Throw Movement in Women Handball Players. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
Luchsinger, Harri; Sandbakk, Øyvind; Schubert, Michael; Ettema, Gerardus Johannes C; Baumeister, Jochen. (2016) A Comparison of Frontal Theta Activity During Shooting among Biathletes and Cross-Country Skiers before and after Vigorous Exercise. PLOS ONE
Vitenskapelig artikkel
Haugnes, Pål; Kocbach, Jan Martin; Noordhof, Dionne Adriana; Talsnes, Rune Kjøsen; Ettema, Gertjan; Sandbakk, Øyvind Bucher. (2023) The influence of tactical positioning on performance in sprint cross-country skiing. PLOS ONE
Vitenskapelig artikkel
Skovereng, Knut; Aasvold, Lorents Ola; Ettema, Gertjan. (2020) On the effect of changing handgrip position on joint specific power and cycling kinematics in recreational and professional cyclists. PLOS ONE
Vitenskapelig artikkel
Ettema, Gertjan; Haug, Aurora Aasrud; Ludvigsen, Tonje Pedersen; Danielsen, Jørgen. (2022) The role of stroke rate and intensity on rowing technique. Sports Biomechanics
Vitenskapelig artikkel
Ettema, Gertjan. (2023) The Force–Velocity Profiling Concept for Sprint Running Is a Dead End. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig oversiktsartikkel
Østerås, Sindre; Welde, Boye; Danielsen, Jørgen; van den Tillaar, Roland; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2016) Contribution of upper-body strength, body composition, and maximal oxygen uptake to predict double poling power and overall performance in female cross-country skiers. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
Sandbakk, Øyvind; Holmberg, Hans-Christer; Leirdal, Stig; Ettema, Gerardus Johannes C. (2010) Metabolic rate and gross efficiency at high work rates in world class and national level sprint skiers. European Journal of Applied Physiology
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2007) A three-dimensional analysis of overarm throwing in experienced handball players. Journal of Applied Biomechanics
Vitenskapelig artikkel
Haugen, Thomas; Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2017) Kinematic stride cycle asymmetry is not associated with sprint performance and injury prevalence in athletic sprinters. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
Lorås, Håvard Wuttudal; Ettema, Gerardus Johannes C; Leirdal, Stig. (2009) The Muscle Force Component in Pedaling Retains Constant Direction Across Pedaling Rates. Journal of Applied Biomechanics
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2004) A force velocity relationship and coordination patterns in overarm throwing. Journal of Sports Science and Medicine (JSSM)
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2004) Effect of body size and gender in overarm throwing performance. European Journal of Applied Physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1997) Mechanical behaviour of rat skeletal muscle during fatiguing stretch-shorten cycles. Experimental Physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1997) Muscle length and force generation in bipedal and quadrupedal animals in relation to joint ankles and locomotor behaviour. Anatomical Record
Vitenskapelig artikkel
Rasdal, Vegard; Fudel, Ronny; Kocbach, Jan; Moen, Frode; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Association between laboratory capacities and world-cup performance in Nordic combined. PLOS ONE
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2009) Is there a proximal-to-distal sequence in overarm throwing in team handball?. Journal of Sports Sciences
Vitenskapelig artikkel
Hansen, Linda Marie; Sandbakk, Øyvind; Ettema, Gertjan; Baumgart, Julia Kathrin. (2021) Upper- vs. Lower-Body Exercise Performance in Female and Male Cross-Country Skiers. Frontiers in Sports and Active Living
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Gløsen, Tommy; van den Tillaar, Roland. (2008) Effect of specific strength training on overarm throwing performance. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Sandbakk, Øyvind; Leirdal, Stig; Ettema, Gerardus Johannes C. (2014) The physiological and biomechanical differences between double poling and G3 skating in world class cross-country skiers. European Journal of Applied Physiology
Vitenskapelig artikkel
Bardal, Ellen Marie; Olsen, Trond Vegar; Ettema, Gerardus Johannes C; Mork, Paul Jarle. (2013) Metabolic rate, cardiac response, and aerobic capacity in fibromyalgia: A case-control study. Scandinavian Journal of Rheumatology
Vitenskapelig artikkel
Elfmark, Ola; Ettema, Gertjan; Gilgien, Matthias. (2022) Assessment of the steady glide phase in ski jumping. Journal of Biomechanics
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gertja. (2013) A Comparison of Muscle Activity in Concentric and Counter Movement Maximum Bench Press. The Journal of Human Kinetics
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Braten, S; Bobbert, MF. (2005) Dynamics of the in-run in ski jumping: A simulation study. Journal of Applied Biomechanics
Vitenskapelig artikkel
Aune, Tore Kristian; Aune, Morten Andreas; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2013) Comparison of bilateral force deficit in proximal and distal joints in upper extremities. Human Movement Science
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Taylor, E; North, JD; Kippers, V. (2005) Muscle synergies at the elbow in static and oscillating isometric torque tasks with dual degrees of freedom. Motor Control
Vitenskapelig artikkel
Aune, Tore Kristian; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2016) Bilateral asymmetry in upper extremities is More pronounced in distal compared to proximal joints. Journal of Motor Behavior
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2010) The "sticking period" in a maximum bench press. Journal of Sports Sciences
Vitenskapelig artikkel
Loland, Sigmund; Ettema, Gertjan; Sandbakk, Øyvind Bucher. (2023) The study of movement skills in sports: toward an integrative approach. Frontiers in Psychology
Vitenskapelig artikkel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Holmberg, Hans-Christer. (2012) Gender differences in the physiological responses and kinematic behaviour of elite sprint cross-country skiers. European Journal of Applied Physiology
Vitenskapelig artikkel
Supej, Matej; Sætran, Lars Roar; Oggiano, Luca; Ettema, Gerardus Johannes C; Sarabon, N; Nemec, B; Holmberg, H.C.. (2012) Aerodynamic drag is not the major determinant of performance during giant slalom skiing at the elite level. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
Leirdal, Stig; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2008) Coordination Specificity in Strength and Power Training. International Journal of Sports Medicine (IJSM)
Vitenskapelig artikkel
Sandbakk, Øyvind; Skålvik, Tommy Fredriksen; Spencer, Matthew; Beekvelt, Mireille Van; Welde, Boye; Hegge, Ann Magdalen; Gjøvaag, Terje; Ettema, Gerardus Johannes C. (2015) The physiological responses to repeated upper-body sprint exercise in highly trained athletes. European Journal of Applied Physiology
Vitenskapelig artikkel
Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2007) The effect of rate of force development on maximal force production: acute and training-related aspects. European Journal of Applied Physiology
Vitenskapelig artikkel
Bolger, Conor; Bessone, Veronica; Federolf, Peter Andreas; Ettema, Gertjan; Sandbakk, Øyvind. (2018) The influence of increased distal loading on metabolic cost, efficiency, and kinematics of roller ski skating. PLOS ONE
Vitenskapelig artikkel
Ettema, Gertjan; Kveli, Espen; Øksnes, Magne; Sandbakk, Øyvind. (2017) The role of speed and incline in the spontaneous choice of technique in classical roller-skiing. Human Movement Science
Vitenskapelig artikkel
Sandbakk, Øyvind; Haugen, Thomas André; Ettema, Gertjan. (2021) The influence of exercise modality on training load management. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Elfmark, Ola; Ettema, Gertjan; Jølstad, Petter Andre; Gilgien, Matthias. (2022) Kinematic Determination of the Aerial Phase in Ski Jumping. Sensors
Vitenskapelig artikkel
Baumgart, Julia Kathrin; Ettema, Gertjan; Griggs, Katy E.; Goosey-Tolfrey, Victoria Louise; Leicht, Christof Andreas. (2021) A Reappraisal of Ventilatory Thresholds in Wheelchair Athletes With a Spinal Cord Injury: Do They Really Exist?. Frontiers in Physiology
Vitenskapelig artikkel
Andersson, E.; Stöggl, T; Pellegrini, B.; Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2012) Biomechanical analysis of the herringbone technique as employed by elite cross-country skiers. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
Haugnes, Pål; Kocbach, Jan; Talsnes, Rune Kjøsen; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2022) The influence of race tactics for performance in the heats of an international sprint cross-country skiing competition. PLOS ONE
Vitenskapelig artikkel
Elfmark, Ola; Ettema, Gertjan. (2021) Aerodynamic investigation of the inrun position in Ski jumping. Sports Biomechanics
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1999) Modelling skeletal muscle-tendon units as actuators in motor behaviour: morphological aspects. Corpus, Psyche et Societas
Vitenskapelig artikkel
Sandbakk, Øyvind; Spencer, Matthew; Ettema, Gerardus Johannes C; Bucher, Silvana Andrea; Skovereng, Knut; Welde, Boye. (2014) The Physiology and Biomechanics of Upper-Body Repeated Sprints in Ice Sledge Hockey. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
McGhie, David; Ettema, Gerardus Johannes C. (2012) Biomechanical analysis of traction at the shoe-surface interface on third generation artificial turf. Procedia Engineering
Vitenskapelig artikkel
Grasaas, Christina Åsan; Ettema, Gertja; Hegge, Ann Magdalen H. S.; Skovereng, Knut; Sandbakk, Øyvind. (2014) Changes in Technique and Efficiency After High-Intensity Exercise in Cross-Country Skiers. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Sandbakk, Øyvind; Hegge, Ann Magdalen H. S.; Ettema, Gertjan. (2013) The role of incline, performance level and gender on the gross mechanical efficiency of roller ski skating. Frontiers in Physiology
Vitenskapelig artikkel
Elfmark, Ola Anker; Sandbakk, Øyvind Bucher; Brevig, Magnus; Ettema, Gertjan. (2024) Performance and jump-to-jump development in the first female ski flying competition in history. Frontiers in Sports and Active Living
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Forwood, Mark R; Goh, Judith TW. (1998) A new method to measure elastic properties of plastic-viscoelastic connective tissue. Medical Engineering and Physics
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Styles, George; Kippers, Vaughan. (1998) The moment arms of 23 muscles of the upper limb in different elbow and forearm positions. Human Movement Science
Vitenskapelig artikkel
Baumgart, Julia Kathrin; Moes, Maaike; Skovereng, Knut; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Examination of gas exchange and blood lactate thresholds in Paralympic athletes during upper-body poling. PLOS ONE
Vitenskapelig artikkel
Dalen, Terje; Ingebrigtsen, Jørgen; Ettema, Gerardus Johannes C; Hjelde, Geir Håvard; Wisløff, Ulrik. (2016) Player load, acceleration, and deceleration during forty-five competitive matches of elite soccer. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
Walshe, Andrew; Wilson, Greg J; Ettema, Gerardus Johannes C. (1998) Stretch shorten cycle as compared to isometric preload: contributions to enhanced muscular performance. Journal of applied physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (2002) Effects of contraction history on control and stability in explosive actions. Journal of Electromyography & Kinesiology
Vitenskapelig artikkel
Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2010) The effect of gender and training experience on body segments' contributions in overarm throwing. International Journal of Sport Psychology
Konferanseabstract
Ettema, Gertjan; Skovereng, Knut; Ritman, Tobias Elvevold; Danielsen, Jørgen. (2023) The role of external power demand on the choice of technique in classic cross-country skiing. PLOS ONE
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2011) A comparison of kinematics between overarm throwing with 20% underweight, regular, and 20% overweight balls. Journal of Applied Biomechanics
Vitenskapelig artikkel
Haugnes, Pål; Kocbach, Jan; Luchsinger, Harri; Ettema, Gertjan; Sandbakk, Øyvind. (2019) The Interval-Based Physiological and Mechanical Demands of Cross-Country Ski Training. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Leirdal, Stig; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2013) Effects of frequency on gross efficiency and performance in roller ski skating. Scandinavian Journal of Medicine & Science in Sports
Vitenskapelig artikkel
Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2017) The effect of exercise intensity on joint power and dynamics in ergometer double-poling performed by cross-country skiers. Human Movement Science
Vitenskapelig oversiktsartikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2003) Influence of instruction on velocity and accuracy of overarm throwing. Perceptual and Motor Skills
Vitenskapelig artikkel
Ettema, Gertjan; Braaten, Steinar; Danielsen, Jørgen; Fjeld, Birk Eirik. (2020) Imitation jumps in ski jumping: Technical execution and relationship to performance level. Journal of Sports Sciences
Vitenskapelig artikkel
Sandbakk, Øyvind; Rasdal, Vegard; Bråten, Steinar; Moen, Frode; Ettema, Gerardus Johannes C. (2016) How do world-class Nordic Combined athletes differ from specialized cross-country skiers and ski jumpers in sport-specific capacity and training characteristics?. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Aune, Tore Kristian; Ingvaldsen, Rolf Petter; Ettema, Gerardus Johannes C. (2008) Effect of physical fatigue on motor control at different skill levels. Perceptual and Motor Skills
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1996) Mechanical efficiency and efficiency of storage and release of series elastic energy in skeletal muscle during stretch-shorten cycles. Journal of Experimental Biology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1997) Mechanical behaviour of rat skeletal muscle during fatiguing stretch-shorten cycles. Experimental Physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1997) Gastrocnemius muscle length in relation to knee and ankle joint angles: verification of a geometric model and some applications. Anatomical Record
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1996) Contractile behaviour in rat gastrocnemius muscle during small amplitude sine wave perturbations. Journal of Biomechanics
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (1996) Elastic - and length-force characteristics of the gastrocnemius of the hopping mouse (notomys alexis) and the rat (rattus norvegicus). Journal of Experimental Biology
Vitenskapelig artikkel
Luchsinger, Harri Simon; Kocbach, Jan; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2020) Contribution from cross-country skiing, start time and shooting components to the overall and isolated biathlon pursuit race performance. PLOS ONE
Vitenskapelig artikkel
Ettema, Gertjan. (2023) Incorporating internal work leads to overestimations of total work in sprint running. European Journal of Applied Physiology
Kommentar
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2009) A comparison of overarm throwing with the dominant and nondominant arm in experienced team handball players. Perceptual and Motor Skills
Vitenskapelig artikkel
Ettema, Gerardus Johannes C. (2001) Muscle efficiency: the controversial role of elasticity and mechanical energy conversion in stretch-shortening cycles. European Journal of Applied Physiology
Vitenskapelig artikkel
Ettema, Gerardus Johannes C; Meijer, Kenneth. (2000) Muscle contraction history: modified Hill versus an exponential decay model. Biological cybernetics
Vitenskapelig artikkel
Elfmark, Ola; Ettema, Gertjan; Groos, Daniel; Ihlen, Espen Alexander F.; Velta, Rune; Haugen, Per; Bråten, Steinar; Gilgien, Matthias. (2021) Performance analysis in ski jumping with a differential global navigation satellite system and video-based pose estimation. Sensors
Vitenskapelig artikkel
Skovereng, Knut; Ettema, Gertjan; Beekvelt, Mireille Van. (2017) The effect of cadence on shank muscle oxygen consumption and deoxygenation in relation to joint specific power and cycling kinematics. PLOS ONE
Vitenskapelig artikkel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Jakobsen, Vidar Eivind; Holmberg, Hans-Christer. (2011) Analysis of a sprint ski race and associated laboratory determinants of world-class performance. European Journal of Applied Physiology
Vitenskapelig artikkel
Bolger, Conor; Sandbakk, Øyvind; Ettema, Gertjan; Federolf, Peter Andreas. (2016) How hinge positioning in cross-country ski bindings affect exercise efficiency, cycle characteristics and muscle coordination during submaximal roller skiing. PLOS ONE
Vitenskapelig artikkel
Ettema, Gertjan; Øksnes, Magne; Kveli, Espen; Sandbakk, Øyvind. (2018) The effect of exhaustive exercise on the choice of technique and physiological response in classical roller skiing. European Journal of Applied Physiology
Vitenskapelig artikkel
Eythorsdottir, Ingrid Eir Thorp; Gløersen, Øyvind; Rice, Hannah; Werkhausen, Amelie; Ettema, Gertjan; Mentzoni, Fredrik; Solberg, Paul Andre; Lindberg, Kolbjørn Andreas; Paulsen, Gøran. (2024) The Battle of the Equations: A Systematic Review of Jump Height Calculations Using Force Platforms. Sports Medicine
Vitenskapelig oversiktsartikkel
Ettema, Gerardus Johannes C; McGhie, David; Danielsen, Jørgen; Sandbakk, Øyvind; Haugen, Thomas André. (2016) On the existence of step-to-step breakpoint transitions in accelerated sprinting. PLOS ONE
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2003) Effects of instruction, emphasizing on velocity, accuracy or both on the performance and kinematics in overarm throwing. Perceptual and Motor Skills
Vitenskapelig artikkel
Tillaar, R van den; Ettema, Gerardus Johannes C. (2003) Instructions emphasizing velocity, accuracy, or both in performance and kinematics of overarm throwing by experienced team handball players. Perceptual and Motor Skills
Vitenskapelig artikkel
Tillaar, R van den; Ettema, Gerardus Johannes C. (2004) Effect of body size and gender in overarm throwing performance. European Journal of Applied Physiology
Vitenskapelig artikkel
McGhie, David; Ettema, Gerardus Johannes C. (2012) Biomechanical Analysis of Surface-Athlete Impacts on Third-Generation Artificial Turf. American Journal of Sports Medicine
Vitenskapelig artikkel
Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) Pedaling Technique and Energy Cost in Cycling. Medicine & Science in Sports & Exercise
Vitenskapelig artikkel
Baumgart, Julia Kathrin; Gurtler, Laura; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Comparison of peak oxygen uptake and exercise efficiency between upper-body poling and arm crank ergometry in trained paraplegic and able-bodied participants. European Journal of Applied Physiology
Vitenskapelig artikkel
Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Ettema, Gerardus Johannes C; Welde, Boye. (2013) Effects of Intensity and Duration in Aerobic High-Intensity Interval Training in Highly Trained Junior Cross-Country Skiers. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
McGhie, David; Sandbakk, Øyvind; Østerås, Sindre; Ettema, Gertjan. (2019) Is There a Trade-Off Between Maximum Jumping and Throwing Capability in the Handball Jump Throw?. Sage Open
Vitenskapelig artikkel
McGhie, David; Ettema, Gertja. (2013) On the "trench effect" theory: A biomechanical analysis of the relationship between traction and shoe orientation on third-generation artificial turf. Footwear Science
Vitenskapelig artikkel
Dahl, Christine; Sandbakk, Øyvind; Danielsen, Jørgen; Ettema, Gertjan. (2017) The role of power fluctuations in the preference of diagonal vs. double poling sub-technique at different incline-speed combinations in elite cross-country skiers. Frontiers in Physiology
Vitenskapelig artikkel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2011) Effects of Speed and Slope on Ski Skating Efficiency and Kinematics. Medicine & Science in Sports & Exercise
Konferanseabstract
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2013) The physiological and biomechanical contributions of poling to roller ski skating. European Journal of Applied Physiology
Vitenskapelig artikkel
Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Comparison of the Effects of Performance Level and Sex on Sprint Performance in the Biathlon World Cup. International Journal of Sports Physiology and Performance (IJSPP)
Vitenskapelig artikkel
Vandbakk, Kristine; Welde, Boye; Kruken, Andrea Hovstein; Baumgart, Julia Kathrin; Ettema, Gertjan; Karlsen, Trine; Sandbakk, Øyvind. (2017) Effects of upper-body sprint-interval training on strength and endurance capacities in female cross-country skiers. PLOS ONE
Vitenskapelig artikkel
Kolsung, Erik Borg; Ettema, Gertjan; Skovereng, Knut. (2020) Physiological Response to Cycling With Variable Versus Constant Power Output. Frontiers in Physiology
Vitenskapelig artikkel
Løkkeborg, Johannes Alnes; Ettema, Gerardus Johannes C. (2020) The role of incline, speed and work rate on the choice of technique in classical roller skiing. PLOS ONE
Vitenskapelig artikkel
Severin, Anna Cecilia; Ettema, Gertjan; Kocbach, Jan Martin. (2025) A method for processing inertial measurement unit data for para-Nordic sit-ski race analysis: a step-by-step guide. Sports Engineering
Vitenskapelig artikkel
Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Faude, Oliver; Holmberg, Hans-Christer; Sandbakk, Øyvind. (2015) Gender differences in power production, energetic capacity and efficiency of elite cross-country skiers during whole-body, upper-body, and arm poling. European Journal of Applied Physiology
Vitenskapelig artikkel
Skovereng, Knut; Ettema, Gerardus Johannes C; Welde, Boye; Sandbakk, Øyvind. (2013) On the relationship between upper-body strength, power and sprint performance in ice sledge hockey. Journal of Strength and Conditioning Research
Vitenskapelig artikkel
Noordhof, Dionne; Danielsson, Marius Lyng; Skovereng, Knut; Danielsen, Jørgen; Seeberg, Trine Margrethe; Haugnes, Pål; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2021) The dynamics of the anaerobic energy contribution during a simulated mass-start competition while roller-ski skating on a treadmill. Frontiers in Sports and Active Living
Vitenskapelig artikkel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2009) A Comparison of Successful and Unsuccessful Attempts in Maximal Bench Pressing. Medicine & Science in Sports & Exercise
Vitenskapelig artikkel
Skovereng, Knut; Ettema, Gerardus Johannes C; Beekvelt, Mireille Van. (2016) Oxygenation, local muscle oxygen consumption and joint specific power in cycling: the effect of cadence at a constant external work rate. European Journal of Applied Physiology
Vitenskapelig artikkel

Bøker

Haugnes, Pål; Kocbach, Jan; Talsnes, Rune Kjøsen; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2022) Race tactics in the heats of a sprint cross-country skiing competition. Swedish Winter Sports Research Centre at Mid Sweden University
Antologi
Haugnes, Pål; Kocbach, Jan; Luchsinger, Harri; Munkebye, Øyvind; Ettema, Gertjan; Sandbakk, Øyvind. (2016) Heart rate profiles, external work rate and kinematics when ski skating on varying terrain during low-, moderate-, and high-intensity endurance training. University of Salzburg
Antologi

Del av bok/rapport

van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2006) The sticking point in bench pressing.
Vitenskapelig kapittel
Ettema, Gertjan; Sandbakk, Øyvind Bucher. (2023) Utvikling av teknikk.
Faglig kapittel
Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2006) A comparison of male throwing athletes and unskilled males when performing an overarm throwing task.
Vitenskapelig kapittel
Ettema, Gerardus Johannes C. (2006) On the proximal-distal sequence in explosive actions: the role of transfer of momentum.
Vitenskapelig kapittel
Supej, Matej; Oggiano, Luca; Ettema, Gerardus Johannes C; Holmberg, H.C.. (2012) Differences in air drag among elite male alpine skiers.
Vitenskapelig kapittel
Ettema, Gertjan; McGhie, David. (2019) Biomekanikk og bevegelse.
Faglig kapittel
Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gertjan. (2016) Mechanical energy and work in treadmill double poling on roller skis.
Vitenskapelig kapittel
Skovereng, Knut; Ettema, Gertja; Beekvelt, Mireille V.; Sandbakk, Øyvind. (2013) Pulmonary oxygen consumption and oxygenation of upper-body muscles during isolated upper body poling at different exercise intensities.
Vitenskapelig kapittel
Ettema, Gertja; Skålvik, Tommy; Spencer, Matthew; Sandbakk, Øyvind. (2013) Performance and coordination in repeated sprint exercise for the upper body.
Vitenskapelig kapittel
Sandbakk, Øyvind; Hansen, Mads; Rønnestad, Bent; Ettema, Gertjan. (2013) Effects of heavy strength training on upper-body strength, power and sprint performance in ice sledge hockey.
Vitenskapelig kapittel
Bucher, Elias; Danielsen, Jørgen; Hegge, Ann Magdalen; Faude, Oliver; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2015) Technique differences between male and female cross-country skiers while whole body, upper body and arm poling on a ski ergometer.
Vitenskapelig kapittel
Ettema, Gerardus Johannes C; Hooiveld, Jo; Bråten, Steinar; Bobbert, Maarten F. (2007) The possible use of horizontal propulsion in imitation ski jumps.
Vitenskapelig kapittel
Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2014) Joint-specific power contribution at increasing double poling intensities.
Vitenskapelig kapittel
Toussaint, Gerthory; Pedersen, Atle; Oterhals, Geir; Fiskvik, Anne Margrete; Ettema, Gerardus Johannes C; Bongaardt, Robert; Bakka, Egil; Audsen, Kjetil; Vereijken, Beatrix; Hokland, Jørn. (2002) La det swinge! Om kropp og bevegelse.
Vitenskapelig kapittel
Oggiano, Luca; Sætran, Lars Roar; Leirdal, Stig; Ettema, Gerardus Johannes C. (2008) Aerodynamic optimization and energy saving of cycling postures for international elite level cyclists.
Vitenskapelig kapittel
van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2006) A comparison of performance and kinematics in throwing with the dominant and non-dominant arm in handball players.
Vitenskapelig kapittel
Leirdal, Stig; Ettema, Gerardus Johannes C. (2012) Cycling.
Kapittel i oppslagsverk
Skovereng, Knut; Beekvelt, Mireille Van; Ettema, Gerardus Johannes C. (2014) The effect of cadence on hip, knee and ankle contribution during cycling exercise.
Vitenskapelig kapittel
Ettema, Gerardus Johannes C; Bråten, Steinar. (2006) On the role of the location of centre of mass in ski jumping.
Vitenskapelig kapittel
Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Skovereng, Knut; Welde, Boye; Ettema, Gerardus Johannes C. (2012) The Physiology of World Class Sledge Ice-Hockey.
Vitenskapelig kapittel
Ettema, Gerardus Johannes C; Bråten, Steinar. (2007) On the role of the location of centre of mass in ski jumping.
Vitenskapelig kapittel
Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Ettema, Gerardus Johannes C; Welde, Boye. (2012) Effects of intensity and duration in aerobic high-intensity interval training.
Vitenskapelig kapittel
Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Comparison of arm, upper body and whole body double poling in female and male cross-country skiers.
Vitenskapelig kapittel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2012) Efficiency in cross-country skiing. A brief review.
Vitenskapelig kapittel
Skovereng, Knut; Ettema, Gerardus Johannes C; Welde, Boye; Sandbakk, Øyvind. (2012) Relationships between Upper-Body Maximal Strength, Power and Sprint Performance in Sledge Ice-Hockey.
Vitenskapelig kapittel
Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Efficiency in endurance exercise: efficiency of what.
Vitenskapelig kapittel
Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, HC. (2012) The contribution from poling increases gender differences in elite cross-country skiers.
Vitenskapelig kapittel
Sandbakk, Øyvind; Holmberg, Hans-Christer; Ettema, Gerardus Johannes C. (2014) The role of gross mechanical efficiency in endurance sports.
Vitenskapelig kapittel

Rapport

Ettema, Gerardus Johannes C. (2000) Physiological and biomechanical constraints: muscle mechanics & motor action. [Mangler utgivernavn]
Arbeidsnotat
Ettema, Gerardus Johannes C. (1997) The Human Musculoskeletal System. [Mangler utgivernavn]
Arbeidsnotat
Ettema, Gerardus Johannes C; Roeleveld, Karin; van den Tillaar, Roland. (1999) Biologi i Grunnfag Idrett (IDR105) på internet. [Mangler utgivernavn]
Arbeidsnotat
Ettema, Gerardus Johannes C. (2000) Biomechanics: classic mechanics applied to the musculoskeletal system in a functional setting. [Mangler utgivernavn]
Arbeidsnotat
Leirdal, Stig; Ettema, Gerardus Johannes C. (2003) Utholdenhet: Energifrigjøring, prestasjonsfaktorer, trening, tilpasninger og testing. Pensum Topptrenerstudiet Olympiatoppen-NTNU. [Mangler utgivernavn]
Arbeidsnotat
Ettema, Gerardus Johannes C. (2000) Motor behaviour: notes on neuro-physiology. [Mangler utgivernavn]
Arbeidsnotat
Ettema, Gerardus Johannes C. (1996) Innovations in teaching musculoskeletal anatomy. [Mangler utgivernavn]
Forskningsrapport
Ettema, Gerardus Johannes C; Kippers, Vaughan. (1996) Proceedings of the 1996 Conference of the anatomical society of Australia and New Zealand. [Mangler utgivernavn]
Forskningsrapport
Haugnes, Pål; Kocbach, Jan; Torvik, Per Øyvind; Ekren, Thomas; Ettema, Gertjan; Sandbakk, Øyvind. (2017) How fast are cross-country skiers in the finish-sprint during a sprint competition? Book of Abstracts: "Performance in snow sports: Translating science into practice". Swedish winter sports research centre, Mid Sweden University
Forskningsrapport

Studentoppgave eller avhandling

Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2006) Effects of gender and training experience on kinematical and temporal aspects of overarm throwing technique. Norges Teknisk-Naturvitenskapelige Universitet, Program for Bevegelsesvitenskap
Masteroppgave
Rasdal, Vegard Finserås; Ettema, Gertjan; Sandbakk, Øyvind. (2019) Concurrent optimization of two extremes: performance, physiological, and training characteristics of world class Nordic combined athletes. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling
Haugnes, Pål; Sandbakk, Øyvind Bucher; Ettema, Gertjan; Noordhof, Dionne Adriana. (2023) Doctoral theses at NTNU (2023:235) "Sprinting for the win in cross-country skiing: Pacing strategy, race tactics, and the finish sprint". NTNU Grafisk senter
Doktoravhandling
Danielsen, Jørgen; Ettema, Gertjan; Sandbakk, Øyvind. (2018) Energetics and dynamics of double poling cross-country skiing. Norges teknisk-naturvitenskapelige universitet
Doktoravhandling

Undervisning

Biomekanikk i bevegelsesvitenskap

Formidling

2026

Intervju

Ettema, Gertjan. (2026) Zo haal je goud bij schansspringen.

2025

Konferanseforedrag

Ettema, Gertjan. (2025) External Power ('work intensity') versus metabolic cost as tool for movement technique analysis in able bodied and PARA sport. NTNU idrett forskningskonferanse 2025

2023

Konferanseposter

Dalen, Terje; Aune, Tore Kristian; Hjelde, Geir Håvard; Ettema, Gertjan; Sandbakk, Øyvind Bucher; McGhie, David Caley Ruud. (2023) Similarity of player load patterns between positions and matches in elite soccer. WCSF

2022

Konferanseforedrag

Haugnes, Pål; Kocbach, Jan; Talsnes, Rune Kjøsen; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind. (2022) Race tactics in the heats of a sprint cross-country skiing competition. Nordic Winter Sports Conference

2021

Konferanseforedrag

Ettema, Gertjan. (2021) Humans are not designed for cycling - right?. Cycling Research Network

2020

Konferanseforedrag

Seeberg, Trine Margrethe; Kocbach, Jan; Noordhof, Dionne; Danielsen, Jørgen; Haugnes, Pål; Skovereng, Knut; Tjønnås, Johannes; Rindal, Ole Marius Hoel; Ettema, Gertjan; Sandbakk, Øyvind. (2020) COMPARISON OF SUB-TECHNIQUE UTILIZATION, KINEMATICS AND PHYSIOLOGICAL RESPONSES BETWEEN LOW- AND HIGH-INTENSITY ROLLER SKI SKATING. ECSS Conference
Konferanseforedrag

Noordhof, Dionne; Seeberg, Trine Margrethe; Kocbach, Jan; Danielsen, Jørgen; Skovereng, Knut; Haugnes, Pål; Sandbakk, Øyvind; Ettema, Gertjan. (2020) Efficiency and cycle characteristics across sub-techniques in rollers-ski skating. European College of Sport Science Annual Congress

2019

Konferanseposter

Skovereng, Knut; Haugnes, Pål; Seeberg, Trine Margrethe; Noordhof, Dionne; Ettema, Gertjan; Sandbakk, Øyvind; Danielsen, Jørgen. (2019) Comparison of muscle oxygenation in arms and legs between sub-techniques while roller ski skating – a pilot study. Nordic Winter Sports Conference
Konferanseforedrag

Skovereng, Knut; Haugnes, Pål; Seeberg, Trine Margrethe; Noordhof, Dionne; Sandbakk, Øyvind; Ettema, Gertjan; Danielsen, Jørgen. (2019) Terrain-specific fluctuations in muscle oxygen saturation during a simulated sprint skiing competition – a pilot study. Nordic Winter Sports Conference
Konferanseforedrag

Ettema, Gertjan. (2019) Sub-techniques in classic and freestyle cross-country skiing – what factors play a role in which to choose?. Groningen Lectures in Movement Science
Konferanseforedrag

Danielsen, Jørgen; McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan. (2019) Source of power generation during double poling at shallow and steep inclines. The 8th International Congress on Science and Skiing
Konferanseforedrag

Ettema, Gertjan; Braaten, Steinar. (2019) Optimising performance in ski jumping. Nordic Winter Sports Conference
Konferanseposter

Danielsen, Jørgen; Haugnes, Pål; Noordhof, Dionne; Seeberg, Trine Margrethe; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind; Skovereng, Knut. (2019) Proskida pole force measurements during cross-country skiing. Poster presentation. Olympiatoppens forskningskonferanse
Konferanseposter

Danielsen, Jørgen; Haugnes, Pål; Noordhof, Dionne; Seeberg, Trine Margrethe; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind; Skovereng, Knut. (2019) Choice of sub-technique and pole forces during low- and high-intensity roller ski skating across hilly terrain – a pilot study. Nordic Winter Sports Conference
Konferanseposter

Skovereng, Knut; Haugnes, Pål; Seeberg, Trine Margrethe; Noordhof, Dionne; Ettema, Gertjan; Kocbach, Jan; Danielsson, Marius Lyng; Sandbakk, Øyvind; Danielsen, Jørgen. (2019) Comparison of muscle oxygenation during different sub-techniques in ski-skating. Olympiatoppens forskningskonferanse

2018

Konferanseforedrag

McGhie, David; Østerås, Sindre; Ettema, Gertjan; Paulsen, Gøran; Sandbakk, Øyvind. (2018) Strength determinants of jump height in the jump throw movement in women handball players. Congress of the European College of Sport Science
Konferanseforedrag

Kolsung, Erik Borg; Skovereng, Knut; Ettema, Gertjan. (2018) Physiological response to cycling with variable versus constant power output. Science in cycling
Konferanseposter

Skovereng, Knut; Kolsung, Erik Borg; Ettema, Gertjan. (2018) On the effect of constant and variable load during pedaling in elite cyclists. Olympiatoppens forskningskonferanse
Konferanseforedrag

Almquist, Nicki Winfield; Ellefsen, Stian; Ettema, Gertjan; Sandbakk, Øyvind; Rønnestad, Bent. (2018) Effect of including 30-s sprints in prolonged endurance exercise on muscular adaptations and gross efficiency in highly trained cyclists. Cycling and Science

2017

Konferanseposter

Luchsinger, Harri; Kocbach, Jan; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Comparison of Performance-Levels and Sex on Sprint Race Performance in the Biathlon World Cup. Olympiatoppens forskningskonferanse
Konferanseposter

Baumgart, Julia Kathrin; Guertler, Laura; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Comparison of VO2peak and exercise efficiency between upper-body poling and arm crank ergometry in trained able-bodied and paraplegic participants. Olympiatoppen forskningskonferanse
Konferanseposter

Baumgart, Julia Kathrin; Skovereng, Knut; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Gas exchange and blood lactate thresholds in Paralympic athletes: do they really exist?. Olympiatoppen forskningskonferanse
Konferanseposter

McGhie, David; Sandbakk, Øyvind; Østerås, Sindre; Ettema, Gertjan. (2017) Is there a trade-off between maximum jumping and throwing capability in the handball jump throw?. Olympiatoppens research conference 2017
Konferanseposter

McGhie, David; Sandbakk, Øyvind; Ettema, Gertjan; Gøran, Paulsen; Østerås, Sindre. (2017) Determinants of sport-specific jump height in female handball players. Olympiatoppens research conference 2017
Konferanseposter

Haugnes, Pål; Kocbach, Jan; Torvik, Per Øyvind; Ekren, Thomas; Ettema, Gertjan; Sandbakk, Øyvind. (2017) How fast are cross-country skiers in the finish-sprint during a sprint competition?. Olympiatoppens Forskningskonferanse 2017
Konferanseforedrag

Haugnes, Pål; Kocbach, Jan; Torvik, Per Øyvind; Ekren, Thomas; Ettema, Gertjan; Sandbakk, Øyvind. (2017) How fast are cross-country skiers in the finish-sprint during a sprint competition?. NVC conference, Performance in snow sports: Translating science into practice
Foredrag

Baumgart, Julia Kathrin; Skovereng, Knut; Ettema, Gertjan; Sandbakk, Øyvind. (2017) Endurance performance in Paralympic sitting sports – testing and training. NVC conference
Konferanseforedrag

Ettema, Gertjan; Kveli, Espen; Øksnes, Magne; Sandbakk, Øyvind. (2017) The Role of Speed and Incline on the Spontaneous Choice of Technique in Classical Roller-Skiing. 26th Annual Meeting of ESMAC
Konferanseforedrag

Ettema, Gertjan; Øksnes, Magne; Kveli, Espen; Sandbakk, Øyvind. (2017) The effect of fatigue on choice of technique and physiological response in cross-country skiing. NVC conference “Performance in snow sports: Translating science into practice”
Konferanseforedrag

Skovereng, Knut; Aasvold, Lorents Ola; Ettema, Gertjan. (2017) Joint specific power is not affected by changes in hand position in recreational and elite cyclists. Science in cycling
Konferanseposter

Skovereng, Knut; Ettema, Gertjan; Aasvold, Lorents Ola. (2017) Low cadence increases hip joint contribution during cycling at different power outputs. Olympiatoppens forskningskonferanse
Konferanseposter

Skovereng, Knut; Aasvold, Lorents Ola; Ettema, Gertjan. (2017) On the effect of changing handgrip position during cycling at different power outputs. Olympiatoppens forskningskonferanse
Konferanseforedrag

Aasvold, Lorents Ola; Ettema, Gertjan; Skovereng, Knut. (2017) Joint specific power production in cycling: the effect of cadence and athlete level. Science in cycling
Foredrag

Sandbakk, Øyvind; Ettema, Gertjan. (2017) Motion capture in elite sport athletes. Seminar GEMS

2016

Konferanseforedrag

Welde, Boye; Vandbakk, Kristine; Hovstein, Andrea; Baumgart, Julia Kathrin; Ettema, Gerardus Johannes C; Karlsen, Trine; Sandbakk, Øyvind. (2016) On the effects of upper-body sprint-interval training on maximal strength and aerobic Power in female cross-country skiers. 7th International Congress on Science and Skiing
Konferanseposter

Ettema, Gertjan; McGhie, David; Danielsen, Jørgen; Sandbakk, Øyvind; Haugen, Thomas André. (2016) On the existence of step-to-step breakpoint transitions in accelerated sprinting. Olympiatoppens forskningskonferanse
Konferanseposter

Rasdal, Vegard; Fudel, Ronny; Kocbach, Jan; Moen, Frode; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2016) Association between laboratory capacities and world-cup performance in nordic combined. Olympiatoppens forskningskonferanse
Konferanseforedrag

Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2016) Mechanical energy and work in treadmill double poling on roller skis. 7th International Congress on Science and SKiing
Konferanseposter

Haugnes, Pål; Kocbach, Jan; Luchsinger, Harri; Munkebye, Øyvind; Ettema, Gertjan; Sandbakk, Øyvind. (2016) Heart rate profiles, external work rate and kinematics when ski skating on varying terrain during low-, moderate-, and high-intensity endurance training. Olympiatoppens forskningskonferanse 2016
Konferanseforedrag

Haugnes, Pål; Kocbach, Jan; Luchsinger, Harri; Munkebye, Øyvind; Ettema, Gertjan; Sandbakk, Øyvind. (2016) Heart rate profiles, external work rate and kinematics when ski skating on varying terrain during low-, moderate-, and high-intensity endurance training. 7th International Congress On Science And Skiing

2015

Konferanseforedrag

Danielsen, Jørgen; Sandbakk, Øyvind; Holmberg, H-C; Ettema, Gerardus Johannes C. (2015) Mechanical energy fluctuations and propulsion in double poling. 3rd International Congress on Science and Nordic Skiing
Konferanseforedrag

Ettema, Gerardus Johannes C; Danielsen, Jørgen; Sandbakk, Øyvind. (2015) Comparison of center of mass energy fluctuations by use of force and motion capture recordings. 3rd International Congress on Science and Nordic Skiing
Konferanseposter

Danielsen, Jørgen; Sandbakk, Øyvind; McGhie, David; Ettema, Gertjan. (2015) Mechanical power and dynamics of uphill double-poling on roller-skis at different incline-speed combinations. Olympiatoppens forskningskonferanse 2018
Konferanseposter

Rasdal, Vegard; Bråten, Steinar; Moen, Frode; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2015) How do world-class Nordic Combined athletes differ from specialized cross-country skiers and ski jumpers in sport-specific capacity and training characteristics?. Olympiatoppens Forskningskonferanse
Konferanseposter

Luchsinger, Harri; Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Baumeister, Jochen; Schubert, Michael. (2015) A comparison of brain activity during shooting among biathletes and cross-country skiers before and after vigorous exercise. Olympiatoppens forskningskonferanse

2014

Konferanseposter

Hegge, Ann Magdalen; Ettema, Gerardus Johannes C; Koning, Jos De; Rognstad, Asgeir Bakken; Hoset, Martin; Sandbakk, Øyvind. (2014) The effects of the arm swing on biomechanical and physiological aspects of roller ski skating. Olympiatoppens Forskningskonferanse 2014, NIH, Oslo.
Foredrag

Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Comparison of arm, upper body and whole body double poling in male and female cross-country skiers. 19th Annual Congress of the ECSS, Amsterdam, The Netherlands
Foredrag

Bolger, Conor; Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Federolf, Peter Andreas. (2014) Does the Position of the Hinge in Cross-country Ski Bindings Affect Muscle Activation in Skating?. 2nd International Congress on Sport Science Research and Technology Support, 2014, Rome, Italy.
Konferanseposter

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2014) Analysis of a sprint ski race and associated laboratory determinants of world-class performance. Olympiatoppens Forskningskonferanse 2014
Konferanseposter

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2014) Gender differences in endurance performance by elite cross-country skiers are influenced by the contribution from poling. Olympiatoppens Forskningskonferanse 2014
Konferanseposter

Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2014) Relative power contributions in double poling. Olympiatoppens Forskningskonferanse 2014
Konferanseposter

Sandbakk, Øyvind; Holmberg, Hans-Christer; Leirdal, Stig; Ettema, Gerardus Johannes C. (2014) The physiology of world-class sprint skiers. Olympiatoppens Forskningskonferanse 2014
Konferanseposter

Sandbakk, Øyvind; Rønnestad, Bent; Hansen, Mads; Ettema, Gerardus Johannes C. (2014) Effects of heavy strength training on upper-body strength, power and sprint performance in ice sledge hockey. Olympiatoppens Forskningskonferanse 2014
Konferanseposter

Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2014) Energy Fluctuations in Double Poling. Olympiatoppens Forskningskonferanse 2014
Konferanseposter

Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Ettema, Gerardus Johannes C; Welde, Boye. (2014) Effects of intensity and duration in aerobic high-intensity interval training. Olympiatoppens Forskningskonferanse 2014
Konferanseforedrag

Skovereng, Knut; Beekvelt, Mireille Van; Ettema, Gerardus Johannes C. (2014) The effect of cadence on hip, knee and ankle contribution during cycling exercise. 19th ECSS Congress 2-5 July 2014 Amsterdam/NED
Konferanseposter

Grasaas, Christina Åsan; Ettema, Gerardus Johannes C; Hegge, Ann Magdalen; Skovereng, Knut; Sandbakk, Øyvind. (2014) Changes in technique and efficiency after high-intensity exercise during roller ski skating. Olympiatoppens Forskningskonferanse 2014, NIH, Oslo.
Konferanseforedrag

Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Efficiency in endurance exercise: efficiency of what?. 19th Annual Congress of the ECSS
Konferanseposter

Hegge, Ann Magdalen; Bucher, E; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer; Faude, Oliver; Sandbakk, Øyvind. (2014) A comparison of arm, upper body and whole body poling in male and female cross-country skiers. Olympiatoppens Forskningskonferanse 2014, NIH, Oslo.
Konferanseforedrag

Danielsen, Jørgen; Sandbakk, Øyvind; Ettema, Gerardus Johannes C. (2014) Joint-specific power contribution at increasing double poling intensities. 19th Annual Congress of the ECSS
Konferanseforedrag

Sandbakk, Øyvind; Holmberg, Hans-Christer; Ettema, Gerardus Johannes C. (2014) The role of gross mechanical efficiency in endurance sports. 19th Annual Congress of the ECSS
Konferanseposter

Skovereng, Knut; Ettema, Gerardus Johannes C; Beekvelt, Mireille Van. (2014) Oxygen consumption in the whole body and the local muscles. Olympiatoppens Forskningskonferanse
Konferanseposter

Skovereng, Knut; Welde, Boye; Ettema, Gerardus Johannes C; Sandbakk, Øyvind. (2014) Upper-body maximal strength and power predict sprint performance in Ice sledge-hockey. Olympiatoppens Forskningskonferanse

2013

Konferanseforedrag

Skovereng, Knut; Ettema, Gertja; Beekvelt, Mireille V.; Sandbakk, Øyvind. (2013) Pulmonary oxygen consumption and oxygenation of upper-body muscles during isolated upper body poling at different exercise intensities. 18th Annual Congress of the ECSS
Konferanseforedrag

Ettema, Gertja; Grasaas, Christina Åsan; Grasaas, Erik; Sandbakk, Øyvind. (2013) Changes in technique after high-intensity exercise during roller ski skating. 6th International congress of science and skiing
Konferanseforedrag

Ettema, Gertja; Skålvik, Tommy; Spencer, Matthew; Sandbakk, Øyvind. (2013) Performance and coordination in repeated sprint exercise for the upper body. 18th Annual Congress of the ECSS
Konferanseforedrag

Hegge, Ann Magdalen H. S.; Holmberg, Hans-Christer; Ettema, Gertja. (2013) Comparison of the G3 and G4 skating techniques in cross-country skiing. 6th International Congress on Science and Skiing, St. Christoph a. Arlberg, Austria
Konferanseposter

Hegge, Ann Magdalen H. S.; Ettema, Gertja; Sandbakk, Øyvind. (2013) Determinants of a 3-min all-out upper body poling exercise in elite cross-country skiers. 6th International Congress on Science and Skiing, St. Christoph a. Arlberg, Austria
Konferanseforedrag

Hegge, Ann Magdalen H. S.; Ettema, Gertja; Hoset, Martin; Rognstad, Asgeir Bakken; Koning, Jos De; Sandbakk, Øyvind. (2013) Physiological and biomechanical analysis of the arm swing in roller ski skating. 15th Annual Congress of the ECSS, Barcelona, Spain
Konferanseforedrag

Sandbakk, Øyvind; Hansen, Mads; Rønnestad, Bent; Ettema, Gertjan. (2013) Effects of heavy strength training on upper-body strength, power and sprint performance in ice sledge hockey. European College of Sport Science

2012

Konferanseforedrag

Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Skovereng, Knut; Welde, Boye; Ettema, Gerardus Johannes C. (2012) The Physiology of World Class Sledge Ice-Hockey. 17th Annual Congress of the ECSS
Konferanseposter

Sandbakk, Øyvind; Sandbakk, Silvana Bucher; Ettema, Gerardus Johannes C; Welde, Boye. (2012) Effects of intensity and duration in aerobic high-intensity interval training. 2nd International Conference of Science in Nordic Skiing
Konferanseforedrag

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2012) The contribution from poling increases gender differences in elite cross-country skiers. 2nd international conference of science in nordic skiing
Konferanseposter

Skovereng, Knut; Ettema, Gerardus Johannes C; Welde, Boye; Sandbakk, Øyvind. (2012) Relationships between Upper-Body Maximal Strength, Power and Sprint Performance in Sledge Ice-Hockey. 17th Annual Congress of the ECSS
Konferanseforedrag

van den Tillaar, Roland; Sæterbakken, Atle Hole; Ettema, Gerardus Johannes C. (2012) A comparison of muscle activation between maximum pure concentric and counter movement bench pressing. XXX International Symposium on Biomechanics in Sports 2012. Melbourne, Australia 01.07-5.07.12.
Konferanseposter

Peters, Marlijn; Weerdenburg, Ingrid J van; Geurts, Alexander C; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2012) Postural steadiness during tandem stance: The influence of foot positioning and weight distribution on center of gravity and center of pressure trajectories. Joint World Congress of Gait & Mental Function
Konferanseposter

Weerdenburg, Ingrid J van; Peters, Marlijn; Geurts, Alexander C; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2012) The influence of foot dominance and task on the trajectory of CoP and CoG in planned gait termination. Joint World Congress of Gait & Mental Function
Konferanseposter

McGhie, David; Ettema, Gerardus Johannes C. (2012) Biomechanical analysis of traction at the shoe-surface interface on third generation artificial turf. The Engineering of Sport 9

2011

Konferanseforedrag

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Løkke, Trine Beate; Holmberg, Hans-Christer. (2011) The impact of pole propulsion on kinematics and fatigue in roller ski skating. 16th Annual Congress of the European College of Sport Science
Konferanseforedrag

Ettema, Gerardus Johannes C; Sandbakk, Øyvind; Leirdal, Stig. (2011) Maximal aerobic capacity and efficiency in world class sprint skiers using the double poling and G3 skating technique. 16th Annual Congress of the European College of Sport Science
Konferanseforedrag

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Holmberg, Hans-Christer. (2011) Effects of Speed and Slope on Ski Skating Efficiency and Kinematics. 58th Annual Meeting and 2nd World Congress on Exercise is Medicine
Konferanseforedrag

Aune, Tore Kristian; Aune, Morten Andreas; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2011) Larger bilateral force deficit in proximal than distal joints might be linked to differences in interhemispheric communication. 16th Annual Congress of the European College of Sport Science
Konferanseforedrag

Leirdal, Stig; Ettema, Gerardus Johannes C. (2011) Pedaling technique and energy cost in cycling. 16th Annual Congress of the European College of Sport Science

2010

Konferanseposter

Sandbakk, Øyvind; Leirdal, Stig; Ettema, Gerardus Johannes C. (2010) Effect of frequency in roller ski skating. 5th International Congress on Science and Skiing - ICSS 2010
Konferanseforedrag

Sandbakk, Øyvind; Ettema, Gerardus Johannes C; Leirdal, Stig; Holmberg, Hans-Christer. (2010) Physiological gender differences associated with sprint skiing performance. 5th International Congress on Science and Skiing - ICSS 2010

2009

Konferanseforedrag

van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2009) Acomparison of successful and unsuccessful attempts in 1RM bench press. 14th Annual Congress of the ECSS
Konferanseforedrag

Ettema, Gerardus Johannes C; McGhie, David; Olsen, Kristian Killi; Lillemark, Kristian. (2009) The effect of body orientation om cycling technique. 14th Annual Congress of the ECSS
Konferanseforedrag

Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) Freely chosen cadence and gross efficiently during ergometer and free bicycling. 14th Annual Congress of the ECSS
Konferanseforedrag

Leirdal, Stig; Ettema, Gerardus Johannes C. (2009) On the relationship between gross efficiency and force effectiveness during ergometer cycling. 11th International Conference of Sport Kinetics
Konferanseposter

Ettema, Gerardus Johannes C; Sandbakk, Øyvind; Leirdal, Stig; Holmberg, HC. (2009) Efficiency at high work rates in world class skiers. 14th Annual Congress of the ECSS
Konferanseposter

Sandbakk, Øyvind; Leirdal, Stig; Holmberg, HC; Ettema, Gerardus Johannes C. (2009) The physiology of world class sprint skiers. 14th Annual Congress of the ECSS
Konferanseposter

Leirdal, Stig; Sandbakk, Øyvind; Holmberg, HC; Ettema, Gerardus Johannes C. (2009) Sub-maximal efficiency during roller ski skating. 14th Annual Congress of the ECSS
Konferanseposter

Sommervoll, Yngve; Ettema, Gerardus Johannes C; Vereijken, Beatrix. (2009) Dual tasking: The effect of task, frequency, and age on variability of finger tapping. Progress in Motor Control VII
Konferanseposter

Ettema, Gerardus Johannes C. (2009) Inertial loading in level and uphill cycling. 11th International Conference of Sport Kinetics

2008

Konferanseposter

Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2008) The effect of gender and training experience on body segments’ contribution in overarm throwing. 2nd Congress of Complex System in Sports, 10th European Workshop of Ecological Psychology
Konferanseforedrag

Oggiano, Luca; Sætran, Lars Roar; Leirdal, Stig; Ettema, Gerardus Johannes C. (2008) Aerodynamic optimization and energy saving of cycling postures for international elite level cyclists. 7th ISEA CONFERENCE 2008

2006

Konferanseforedrag

Sommervoll, Yngve; Ettema, Gerardus Johannes C. (2006) A comparison of male throwing athletes and unskilled males in fast overarm throws. Nordisk Konferanse i Bevegelsesvitenskap 2006
Konferanseforedrag

van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2006) A comparison of performance and kinematics in throwing with the dominant and non-dominant arm in handball players. The XXIV International Symposium on Biomechanics in Sports
Konferanseforedrag

Ettema, Gerardus Johannes C. (2006) On the proximal-distal sequence in explosive actions: the role of transfer of momentum. Nordisk Konferanse i Bevegelsesvitenskap 2006
Konferanseforedrag

van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2006) The sticking point in bench pressing. Nordisk Konferanse i Bevegelsesvitenskap 2006

2005

Konferanseforedrag

Oterhals, Geir; Ettema, Gerardus Johannes C. (2005) Bilateral Deficit in Human Jumping Performance. Biomove
Konferanseforedrag

Leirdal, Stig; Ettema, Gerardus Johannes C; Bråten, Steinar; Kvålsvoll, Atle. (2005) Analyses of technique in cycling: A pilot study. BIOMOVE
Konferanseforedrag

Leirdal, Stig; Ettema, Gerardus Johannes C; Bråten, Steinar; Kvålsvoll, Atle. (2005) Analyses of technique in cycling: A pilot study. Nordisk konferanse om bevegelsesanalyse

2004

Foredrag

Ettema, Gerardus Johannes C; Roeleveld, Karin. (2004) Prøv deg på skihoppsimulator. Forskningstorget
Konferanseforedrag

Ettema, Gerardus Johannes C. (2004) Computer simulation of ski jumping: Furthering our understanding of task constraints. Forskningsseminar bevegelsesvitenskap, NTNU
Konferanseforedrag

Leirdal, Stig; Holtermann, Andreas; Roeleveld, Karin; Sætran, Lars Roar; Bråten, Steinar; Løset, Sveinung; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2004) Influence of body position on performance in sprint cross-country ski skating. International Conference of Sport Sciences

2003

Konferanseposter

Leirdal, Stig; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2003) Power traning and bi-articular muscle function in vertical jumping. ECSS Salzburg 2003, 8th annual congress european college of sport science
Konferanseforedrag

Ettema, Gerardus Johannes C; van den Tillaar, Roland; Kristensen, Geir Olav. (2003) Speed specificity in sprint training. 8th Annual Congress of the European College of Sport Science
Konferanseforedrag

Leirdal, Stig; Holtermann, Andreas; Roeleveld, Karin; Sætran, Lars Roar; Vereijken, Beatrix; Bråten, S.; Løset, S.; Ettema, Gerardus Johannes C. (2003) Influence of body position on performance in sprint cross-country ski skating. Nordisk konferanse i Bevgelsesvitenskap, NKB 2003
Konferanseforedrag

Bråten, S.; Ettema, Gerardus Johannes C. (2003) Funksjonell feedback i teknikktrening. Nordisk konferanse i bevegelsesvitenskap 2003
Foredrag

Ettema, Gerardus Johannes C; Leirdal, Stig; Holtermann, Andreas; Roeleveld, Karin; Sætran, Lars Roar; Vereijken, Beatrix; Bråten, S.; Løset, Sveinung. (2003) Sprint Langrenn og Teknikk - Kroppsposisjon, luftmotstand, effekt og kostnad. OLT-fagmøte - langrenn
Konferanseforedrag

Bråten, S.; Ettema, Gerardus Johannes C. (2003) Skihopp - prøving eller læring?. Nordic Conference in Movement Science, 2003
Konferanseforedrag

Brændvik, Siri; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2003) Adaptions following a transtibal amputation - The emergence of new muscle and joint assemblies. XV International Interbor Congrass on prosthetics and ortotics
Konferanseforedrag

Ettema, Gerardus Johannes C. (2003) Computer simulation of movement dynamics in research and teaching. Nordisk konferanse i bevegelsesvitenskap 2003
Konferanseforedrag

van den Tillaar, Roland; sæterbakken, Atle; Manger, Kyrre; Ettema, Gerardus Johannes C. (2003) Influence of instruction on velocity and accuracy of overarm throwing in novices. Nordic conference in Human Movement Sciences; Nordisk konferense i bevegelsesvitenskap

2002

Konferanseforedrag

Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Karlsson, J Stefan; Ettema, Gerardus Johannes C. (2002) Neural adaptations during learning a strength task. International society for elektromyography and kinesiology
Foredrag

Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2002) Bevegelsesvitenskap, hester og terapi. annual meeting of the fagforum for terapiridning
Konferanseforedrag

Fiskvik, A.; Vereijken, Beatrix; Ettema, Gerardus Johannes C; Pedersen, Arve Vorland; Bongaardt, Robert. (2002) The body in motion as a scientific phenomenon. International conference on cognitive aspects of dance
Konferanseforedrag

Tegdan, Trine; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2002) Fatigue and muscle coordination in subjects with patellofemoral pain syndrome. Symposium for Bevegelsesanalyse
Konferanseforedrag

Ettema, Gerardus Johannes C; Tegdan, Trine; Roeleveld, Karin. (2002) Fatigue and muscle coordination in subjects with patellofemoral pain syndrome. IVth World Congress of Biomechanics, August 4-9 2002, Calgary Canada.
Konferanseforedrag

Leirdal, Stig; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2002) Power training and biarticular muscle function in vertical jumping. Symposium for Bevegelsesanalyse
Konferanseforedrag

van den Tillaar, Roland; Ettema, Gerardus Johannes C; Gløssen, Tommy. (2002) Effect of three different strength training programs with the same workload on velocity in overarm throwing. 3rd international conference on strength traning; Strength training in sport and Rehabilitation
Konferanseforedrag

van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2002) The proximal-distal sequence in overarm throwing and the effect of ball weight. IV World Congress Biomechanics, 4-9 August, 2002
Konferanseforedrag

Brandvik, Siri; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2002) Neuro-muscular adaptation following a below knee amputation. Symposium for Bevegelsesanalyse
Konferanseforedrag

Holtermann, Andreas; Roeleveld, Karin; Vereijken, Beatrix; Ettema, Gerardus Johannes C. (2002) Neural adaptations during learning a strength task. Symposium for Bevegelsesanalyse
Foredrag

Ettema, Gerardus Johannes C; Tegdan, Trine. (2002) Bevegelsesvitenskap ved NTNU. [Mangler data]
Konferanseposter

Brandvik, Siri; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2002) Neuro-muscular adaptation following a below knee amputation. XIVth Congress of the International Society of Electrophysiology and Kinesiology "Standardization for a better exchange of ideas"

2001

Konferanseforedrag

Brandvik, Siri; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2001) Nevro-muskulære tilpasninger etter en leggamputasjon. tverrfaglig symposium
Konferanseforedrag

Ettema, Gerardus Johannes C. (2001) Muscle force generation and stability in explosive actions. 6th Annual Congress of the European College of Sport Science
Foredrag

Ettema, Gerardus Johannes C. (2001) Bevegelseslære og anatomi. Møte av Rådet for folkemusikk og folkedans, NTNU
Konferanseforedrag

Haukvik, Ingrid Vee; Roeleveld, Karin; Ettema, Gerardus Johannes C. (2001) Comparison of coordination in vertical jumping in adults and young children. XVIII th International Congress of Biomechanics
Konferanseposter

Ettema, Gerardus Johannes C. (2001) Muscle activation of quadriceps femoris in subjects with patellofemoral pain syndrome and healthy subjects when fatigued. Idrettsmedisinsk Høstkongress

2000

Konferanseforedrag

Ettema, Gerardus Johannes C. (2000) Bewegingswetenschappen in Trondheim - mogelijkheden en begrenzingen. [Mangler data]
Konferanseforedrag

van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2000) Influences of instruction on velocity and accuracy of overarm throwing. Fifth Annual Congress of the European College of Sport Science, Jyväskylä Finland, 19-23 July 2000.
Konferanseforedrag

van den Tillaar, Roland; Ettema, Gerardus Johannes C. (2000) Influence of instruction on velocity and coordination of overarm throwing in handball. International Conference on Motor control,Bielsko-Biata, Poland, 27-29 November 2000
Konferanseforedrag

Ettema, Gerardus Johannes C. (2000) Biomekanikk i bevegelse - III: Musklel. [Mangler data]
Konferanseforedrag

Ettema, Gerardus Johannes C. (2000) Biomekanikk i bevegelse - II: Mekanikk og vev. [Mangler data]
Konferanseforedrag

Ettema, Gerardus Johannes C. (2000) Biomekanikk i bevegelse - I: Kraft i bevegelse. [Mangler data]

1999

Konferanseforedrag

Kippers, Vaughan; Ettema, Gerardus Johannes C. (1999) Musculoskeletal constraints in motor control. Queensland State Conference: Musculo-skeletal Injuries, Prevention, Management & Rehabilitation
Konferanseforedrag

Taylor, Emma; Kippers, Vaughan; Ettema, Gerardus Johannes C. (1999) Muscular control of complex elbow movements. Queensland State Conference: Musculo-skeletal Injuries, Prevention, Management
Konferanseforedrag

Kippers, Vaughan; Ettema, Gerardus Johannes C; Taylor, Emma; North, David. (1999) Muscular control of attempted movements at joints with two degrees of freedom. Fifth IOC World Congress
Konferanseforedrag

North, David; Kippers, Vaughan; Ettema, Gerardus Johannes C. (1999) Muscular control of combined knee movements. Queensland State Conference: Musculo-skeletal Injuries, Prevention, Management
Konferanseforedrag

Ettema, Gerardus Johannes C. (1999) Muscle coordination in movement: lessons learned from static actions. International Research Course on Dance, Culture and Human Movement Science
Konferanseforedrag

Ettema, Gerardus Johannes C. (1999) Biological Factors in Human Movement - The importance of being biological. Human Movement Science in Perspective
Konferanseforedrag

Ettema, Gerardus Johannes C. (1999) Motor Control: structure-action-function. [Mangler data]

1998

Konferanseforedrag

Ettema, Gerardus Johannes C. (1998) Muscle mechanics and vertebrate locomotion III: Locomotion styles. [Mangler data]
Konferanseforedrag

Ettema, Gerardus Johannes C. (1998) Muscle mechanics and vertebrate locomotion II: Muscle as engine or spring. [Mangler data]
Konferanseforedrag

Ettema, Gerardus Johannes C. (1998) Muscle mechanics and vertebrate locomotion I: muscle properties. [Mangler data]
Foredrag

Ettema, Gerardus Johannes C. (1998) Controlling Ground Reaction Force. Human Movement Science Seminar 1998
Konferanseforedrag

Ettema, Gerardus Johannes C. (1998) Hill-type muscle models and an alternative describing contraction history. Third World Congress of Biomechanics

1997

Konferanseforedrag

Ettema, Gerardus Johannes C. (1997) Series elastic energy in stretch-shortening cycle. Biannual Conference of the Department of Biomedical Sciences, U niversity of Sydney (1997-10-02/04)
Konferanseforedrag

Ettema, Gerardus Johannes C. (1997) Muscle stiffness : significance in motor control. Biannual Conference of the Department of Biomedical Sciences, U niversity of Sydney (1997-10-02/04)
Konferanseforedrag

Ettema, Gerardus Johannes C. (1997) Series elastic energy in stretch-shortening cycle. 11th Biennial Conference of the Department of Biomedical Sciences of the Faculty of Health sciences
Konferanseforedrag

Ettema, Gerardus Johannes C. (1997) Muscle stiffness: significance in motor control. 11th biennial Conference of the Department of Biomedical Sciences of the Faculty of Health sciences

1996

Konferanseforedrag

Ettema, Gerardus Johannes C; Weinrauch, Patrick; Kippers, Vaughan. (1996) Influence of hip rotation on coordination of knee extensor exercises. The 1996 Conference of the Anatomical Society of Australia and New Zealand
Konferanseforedrag

Ettema, Gerardus Johannes C. (1996) Effects of muscle fatigue on series elastic stiffness and mechanical efficiency in skeletal muscle. Proceedings of The Eleventh Congress of the International Society of Electrophysiological Kinesiology
Konferanseforedrag

Ettema, Gerardus Johannes C; Blowers, Alan. (1996) Advances in artificial stimulation of muscle using a direct current block. Proceedings of The Eleventh Congress of the International Society of Electrophysiological Kinesiology
Konferanseforedrag

Ettema, Gerardus Johannes C. (1996) Muscle length in bipedal and quadrupedal animals in relation to locomotor behaviour. The First Australasian Biomechanics Conference
Konferanseforedrag

Ettema, Gerardus Johannes C. (1996) Misconceptions in skeletal muscle function introduced by level-one gross anatomy teaching. The 1996 Conference of the Anatomical Society of Australia and New Zealand, Brisbane
Konferanseforedrag

Ettema, Gerardus Johannes C; Kippers, Vaughan; Weinrauch, Patrick. (1996) Influence of hip rotation on activation of individual human thigh muscles during isometric knee extensor exercises. The Eleventh Congress of the International Society of Electrophysiological Kinesiology

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Gertjan Ettema

Gertjan Ettema

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