| Effects of 4-weeks of asynchronous hand-rim wheelchair practice on mechanical efficiency and timing. | |
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MedLine Citation:
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PMID: 20731561 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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PURPOSE: To investigate the consequence on gross mechanical efficiency (GE), arm frequency and sub-maximal performance, of paced and unpaced practice during asynchronous hand-rim wheelchair propulsion. METHODS: Twenty-five able-bodied participants performed five, 4-min exercise bouts at 1.7 m/s, at the freely chosen frequency (FCF) and four paced arm frequencies of 60, 80, 120 and 140% FCF. GE, arm frequency and measures of sub-maximal performance were determined. Participants were assigned to an unpaced (FCF, N = 9), paced (80% FCF, N = 8) or control (CON, N = 8) no practice group. The FCF and 80% FCF groups received 4-weeks (unpaced and paced, respectively) propulsion practice (three sessions·per wk, four 4 min/trials; 33-35 W) at 1.7 m/s on a wheelchair ergometer. Following practice, the pre-testing protocol was repeated. RESULTS: Mean GE showed a relative increase in both experimental groups (21 and 17%; FCF and 80% FCF respectively; p = 0.001) compared to no change in CON (-1.5%). The FCF arm frequency decreased in both experimental groups (p = 0.001), with larger changes evident following FCF practice. CONCLUSION: Four weeks of unpaced or paced practice had a beneficial effect on GE. This improvement seems to be associated with a reduction in arm frequency. |
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Authors:
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John Paul Lenton; Lucas H V Van Der Woude; Neil E Fowler; Victoria Goosey-Tolfrey |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Disability and rehabilitation Volume: 32 ISSN: 1464-5165 ISO Abbreviation: Disabil Rehabil Publication Date: 2010 |
Date Detail:
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Created Date: 2010-11-29 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9207179 Medline TA: Disabil Rehabil Country: England |
Other Details:
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Languages: eng Pagination: 2155-64 Citation Subset: IM |
Affiliation:
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Peter Harrison Centre for Disability Sport, School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, UK. J.P.Lenton@lboro.ac.uk |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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