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The physiological and biomechanical effects of forwards and reverse sports wheelchair propulsion

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journal contribution
posted on 03.12.2015 by Barry Mason, John P. Lenton, Vicky Goosey-Tolfrey
Objective To explore the physiological and biomechanical differences between forwards (FOR) and reverse (REV) sports wheelchair propulsion. Design Fourteen able-bodied males with previous wheelchair propulsion experience pushed a sports wheelchair on a single-roller ergometer in a FOR and REV direction at three sub-maximal speeds (4, 6, and 8 km/hour). Each trial lasted 3 minutes, and during the final minute physiological and biomechanical measures was collected. Results The physiological results revealed that oxygen uptake (1.51 ± 0.29 vs. 1.38 ± 0.26 L/minute, P = 0.005) and heart rate (121 ± 19 vs. 109 ± 14 beats/minute, P < 0.0005) were significantly greater during REV than FOR only during the 8 km/hour trials. From a biomechanical perspective, push frequencies were similar between FOR and REV across all speeds (P > 0.05). However, greater mean resultant forces were applied during FOR (P < 0.0005) at 4 km/hour (66.7 ± 19.5 vs. 49.2 ± 10.3 N), 6 km/hour (90.7 ± 21.9 vs. 65.3 ± 18.6 N), and 8 km/hour (102.5 ± 17.6 vs. 68.7 ± 13.5 N) compared to REV. Alternatively, push times and push angles were significantly lower (P ≤ 0.001) during FOR at each speed. Conclusions The current study demonstrated that at higher speeds physiological demand becomes elevated during REV. This was likely to be associated with an inability to apply sufficient force to the wheels, thus requiring kinematic adaptations in order to maintain constant speeds in REV.

History

School

  • Sport, Exercise and Health Sciences

Published in

JOURNAL OF SPINAL CORD MEDICINE

Volume

38

Issue

4

Pages

476 - 484 (9)

Citation

MASON, B.S., LENTON, J.P. and GOOSEY-TOLFREY, V.L., 2015. The physiological and biomechanical effects of forwards and reverse sports wheelchair propulsion. Journal of Spinal Cord Medicine, 38(4), pp. 476-484.

Publisher

© Maney Publishing. Published on behalf of of Academy of Spinal Cord Injury Professionals

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

This paper was accepted for publication in the journal Journal of Spinal Cord Medicine and the definitive published version is available at http://dx.doi.org/10.1179/2045772314Y.0000000197

ISSN

1079-0268

Language

en

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