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Analyzing Intra-Cycle Velocity Profile and Trunk Inclination during Wheelchair Racing Propulsion

Article dans une revue avec comité de lecture
Author
POULET, Yoann
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
564850 Institution Nationale des Invalides - Centre d’Etudes et de Recherche sur l’Appareillage des Handicapés [INI/CERAH]
BRASSART, Florian
558924 Impact de l'Activité Physique sur la Santé [IAPS]
ccSIMONETTI, Emeline
564850 Institution Nationale des Invalides - Centre d’Etudes et de Recherche sur l’Appareillage des Handicapés [INI/CERAH]
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
ccPILLET, Helene
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
FAUPIN, Arnaud
558924 Impact de l'Activité Physique sur la Santé [IAPS]
ccSAURET, Christophe
564850 Institution Nationale des Invalides - Centre d’Etudes et de Recherche sur l’Appareillage des Handicapés [INI/CERAH]
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]

URI
http://hdl.handle.net/10985/23201
DOI
10.3390/s23010058
Date
2022-12
Journal
Sensors

Abstract

The analysis of intra-cycle velocity profile of manual wheelchair (MWC) users has been used to highlight the significant role of trunk inertia in propulsion biomechanics. Maximal wheelchair linear velocity has previously been observed to be reached after the release of the handrims both during sports activities and daily life propulsion. This paper provides a combined analysis of linear velocity and trunk kinematics in elite wheelchair racing athletes during straight-line propulsion at stabilized speeds. MWC and trunk kinematics of eight athletes (level: 7 elite, 1 intermediate; classification: T54 (5), T53 (2) and T52 (1)) were monitored during 400 m races using inertial measurement units. An average propulsion cycle was computed for each athlete. The main finding of this article is the difference in propulsion patterns among the athletes, exhibiting either 1, 2 or 3 peaks in their velocity profile. A second peak in velocity is usually assumed to be caused by the inertia of the trunk. However, the presence of a second velocity peak among more severely impaired athletes with little to no trunk motion can either be associated to the inertia of the athletes’ arms or to their propulsion technique.

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