Influence of noncircular chainring on male physiological parameters in hand cycling
Smith, Paul M.
Strueder, Heiko K.
U.S. Department of Veterans Affairs
MetadataShow full item record
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.
Journal of Rehabilitation Research & Development;
Zeller, S., Abel, T., Smith, P.M. and Strueder, H.K. (2015) 'Influence of noncircular chainring on male physiological parameters in hand cycling', Journal of Rehabilitation Research & Development, 52(2)
Article published in open access in Journal of Rehabilitation Research & Development available at https://doi.org/10.1682/JRRD.2014.03.0070
- Sport Research Groups 
Showing items related by title, author, subject and abstract.
A POST ACTIVATION POTENTIATION STUDY: THE ACUTE EFFECT OF A HEAVY RESISTANCE ROMANIAN DEAD LIFT AND A RESISTED SPRINT PULL UPON 30 METRE SPRINT PERFORMANCES IN SPRINTERS Craythorne, Matthew (Cardiff Metropolitan University, 2013)Post activation potentiation (PAP) increases levels of muscle twitch force and synaptic activity through prior voluntary maximal muscle contractions (Folland et al., 2008). Performing muscle contractions with near maximal ...
The relationship between muscular power, sprint performance and spatiotemporal sprint characteristics Patridge, Ned (Cardiff Metropolitan University, 2016-03-09)It is well established that muscular power is essential for sprint performance. However, the mechanism by which muscular power facilitates faster running speeds is weakly reported. The aim of this study was to identify the ...
Comparing lower leg kinematics and coordination in sprint acceleration with and without the constraint of holding a field hockey stick Wdowski, Maximilian (University of Wales, 2011-10-25)The importance of rapid sprint acceleration in team based sport performance has been well established. Sports scientists have created a number of training techniques, such as interval sprint training, to improve the ...