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|Title: ||The physiological and biomechanical effects of forwards and reverse sports wheelchair propulsion|
|Authors: ||Mason, Barry S.|
Lenton, John P.
Goosey-Tolfrey, Victoria L.
|Keywords: ||Push strategy|
|Issue Date: ||2015|
|Publisher: ||© Maney Publishing. Published on behalf of of Academy of Spinal Cord Injury Professionals|
|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.|
To explore the physiological and biomechanical differences between forwards (FOR) and reverse (REV) sports wheelchair propulsion.
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.
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.
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.|
|Description: ||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|
|Version: ||Accepted for publication|
|Publisher Link: ||http://dx.doi.org/10.1179/2045772314Y.0000000197|
|Appears in Collections:||Published Articles (Sport, Exercise and Health Sciences)|
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