Journal of Rehabilitation Research & Development (JRRD)

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Volume 52 Number 2, 2015
   Pages 211 — 220

Abstract — Influence of noncircular chainring on male physiological parameters in hand cycling

Sebastian Zeller, MSc Sport Science;1* Thomas Abel, Prof Dr;1 Paul M. Smith, Dr;2 Heiko K. Strueder, Prof Dr1

1Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany; 2Cardiff School of Sport, Cardiff Metropolitan University, Cardiff, Wales, United Kingdom

Abstract — The purpose of this study was to examine the influence of a noncircular chainring (NCC) compared with a conventional circular chainring (CC) on hand cycling performance. Eleven nondisabled male participants with no hand cycling experience initially completed an incremental exercise test. Afterward, the participants completed two 20 s sprint tests, followed by a 20 min endurance test and then another two 20 s sprint tests. An NCC and a CC were used in random order on two separate occasions. To compare the effects of the NCC and CC on power data of the sprint tests and metabolic response during the endurance test, a two-way analysis of variance for repeated measures was used. Average power values of the sprint tests showed no significant difference between NCC and CC, but over time, values of the first and third sprint tests were higher than those of the second and fourth sprint tests for both chainrings. Values of energy expenditure (kilojoules), gross efficiency (percentage), and net efficiency (percentage) after 10 and 20 min during the endurance test using NCC and CC showed no significant differences (p > 0.05) either between tests or over time. Under the current test conditions and focusing on physiological parameters, a performance optimization using an NCC in hand cycling could not be proven.

Key words: aerobic test, chainring, endurance test, energy expenditure, hand cycling, paracycling, Paralympics, performance optimization, performance testing, sprint test.

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This article and any supplementary material should be cited as follows:
Zeller S, Abel T, Smith PM, Strueder HK. Influence of noncircular chainring on male physiological parameters in hand cycling. J Rehabil Res Dev. 2015;52(2):211–20.

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Last Reviewed or Updated  Tuesday, June 9, 2015 11:42 AM

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