Related Experiment Video
Updated: Aug 10, 2026

Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion
Published on: February 5, 2020
Effect of Repeated, On-Field Sprints on Kinematic Variables in Wheelchair Rugby Players
Sadate Bakatchina1, Florian Brassart, Kossivi Dosseh
1From the Laboratory Physical Activity Impact on Health (IAPS), University of Toulon, Toulon, France (SB, FB, AF); Laboratory of Biomechanics and Robotics, PPRIME Institute, CNRS, University of Poitiers, Poitiers, France (SB); Laboratory of Material to SystemIntegration (IMS), University of Bordeaux, Pessac, France (FB, TW); Laboratory of Physiology and Pharmacology, Faculty of Science, Université of Lome, Lome, Togo (KD); and Pole Parasport-ISPC Synergies, CHU Raymond Poincaré, APHP, Garches, France (DP).
Objective:
The aim of the study was to evaluate the influence of repeated sprints on kinematic performance and propulsion variables during the acceleration and constant peak velocity phases in wheelchair rugby players classified as defensive (low point in defensive [LP-D]) or offensive players (high point in offensive [HP-O]).
Design:
Twenty-two players (13 LP-D and 9 HP-O) performed 6 × 20-m repeated sprint field tests. We calculated peak wheelchair velocities, propulsion phase times, deceleration phase times, cycle times, and left-right velocity asymmetry of the best and last sprints during the acceleration and constant peak velocity phases, the rate of decline in performance variables between the best and the last sprint and a fatigue index.
Results:
Peak velocities during the acceleration and constant peak velocity phases and mean velocity over the whole sprint were significantly higher during the best than last sprint. Peak velocities were higher during the acceleration and constant peak velocity phases for the best and last sprint for HP-O. The rate of decline in peak velocity during the constant peak velocity phase was higher for LP-D. Fatigue index and rate of decline in velocities and sprint time were higher for LP-D.
Conclusions:
Performance variables and the rate of decline in performance variables depended on functional capacity and wheelchair type.
More Related Videos
Related Concept Videos
Social Facilitation
Force and Momentum
Impact
When particles with different initial velocities collide, they induce deformation by applying equal and opposite impulses. At the point of maximum deformation, the particles move together with...
Types of Impact
The coefficient of restitution is a metric for understanding the dynamics of impacts. It quantifies the ratio of relative velocity...
Impact: Problem Solving
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...
Motion of a Projectile
Horizontal motion, governed by the initial kick, maintains a constant velocity throughout the flight of the soccer ball.

