Results 141 to 150 of about 1,549,879 (179)

The start in speed skating

Medicine & Science in Sports & Exercise, 1995
The purpose of this study was to describe the push-off kinematics in speed skating using three-dimensional coordinates of elite male sprinters during the first part of a speed skating sprint. The velocity of the mass center of the skater's body VC, is decomposed into an "extension" velocity component VE, which is associated with the shortening and ...
J J, de Koning, R, Thomas, M, Berger, G, de Groot, G J, van Ingen Schenau   +4 more
openaire   +2 more sources

Speed Skating Modeling

2013
Advice about the optimal coordination pattern for an individual speed skater to reach their optimal performance, could well be addressed by simulation and optimization of a biomechanical model of speed skating. But before getting to this optimization approach one needs a model that matches observed behavior.
A. L. Schwab, D. M. Fintelman, O. den Braver   +2 more
openaire   +1 more source

A power equation for the sprint in speed skating

Journal of Biomechanics, 1992
An analysis of the start of the 500 m speed skating races during the 1988 Olympic Winter Games showed a remarkably high correlation between the acceleration of the skater in the first second of the sprint and the final time (r = -0.75). In this study a power equation is used to explain this high coefficient of correlation.
J J, de Koning, G, de Groot, G J, van Ingen Schenau   +2 more
openaire   +2 more sources

Injuries in Short Track Speed Skating

The American Journal of Sports Medicine, 2003
Background Little is known about the pattern of injury in short track speed skating. Purpose To investigate the incidence and characteristics of injuries in short track speed skating.
Andrew, Quinn, Victor, Lun, John, McCall, Tom, Overend   +3 more
openaire   +2 more sources

A geometrical model of speed skating the curves

Journal of Biomechanics, 1988
The centripetal force in speed skating the curves has to be delivered by the push off force which also does the external work to maintain the speed. Based on the geometry of the speed skating oval and the sideward push off characteristics in speed skating, a mathematical model of the power output in skating the curves was deduced. The power required to
R W, de Boer, G J, Ettema, H, van Gorkum, G, de Groot, G J, van Ingen Schenau   +4 more
openaire   +2 more sources

Ice friction during speed skating

Journal of Biomechanics, 1992
During speed skating, the external power output delivered by the athlete is predominantly used to overcome the air and ice frictional forces. Special skates were developed and used to measure the ice frictional forces during actual speed skating. The mean coefficients of friction for the straights and curves were, respectively, 0.0046 and 0.0059.
J J, de Koning, G, de Groot, G J, van Ingen Schenau   +2 more
openaire   +2 more sources

The Association Between Changes in Speed Skating Technique and Changes in Skating Velocity

International Journal of Sports Physiology and Performance, 2014
A meaningful association between changes (Δ) in push-off angle or effectiveness (e) and changes in skating velocity (v) has been found during 5000-m races, although no significant association was found between changes in knee (θ0) and trunk angle (θ1) and Δv.
Noordhof, D.A., Foster Jr., C.C., Hoozemans, M.J.M., de Koning, J.J.   +3 more
openaire   +2 more sources

Lower limb muscle activation patterns in ice-hockey skating and associations with skating speed

Sports Biomechanics
In this study, we aimed to describe lower limb kinematic and muscle activation patterns and then to examine the potential associations between those variables and skating speed in highly trained ice-hockey players.
Heikki Tikkanen, Sami Kaartinen, Lauri Stenroth   +2 more
exaly   +2 more sources

Hemoglobin/myoglobin desaturation during speed skating

Medicine &amp Science in Sports &amp Exercise, 1997
The characteristic low "sitting" position of competitive speed skating has been shown to result in a right shifted heart rate-VO2 curve and elevated submaximal blood lactate values compared with running or cycling. This is thought to be a consequence of reduced blood flow and subsequent oxygen delivery to the exercising muscle while speed skating. Duel
K W, Rundell, S, Nioka, B, Chance
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Coordination of leg muscles during speed skating

Journal of Biomechanics, 1991
Five speed skaters of elite performance level and six speed skaters of trained level were subjected to an inverse dynamical analysis during speed skating. Push-off forces were registered by means of special skates. Myoelectric activity (EMG) of ten leg muscles and cinematographic data were recorded.
J J, de Koning, G, de Groot, G J, van Ingen Schenau   +2 more
openaire   +2 more sources