| Effects of different pedalling techniques on muscle fatigue and mechanical efficiency during prolonged cycling. | |
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MedLine Citation:
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PMID: 21507064 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The present study aimed to test the influence of the pedalling technique on the occurrence of muscular fatigue and on the energetic demand during prolonged constant-load cycling exercise. Subjects performed two prolonged (45 min) cycling sessions at constant intensity (75% of maximal aerobic power). In a random order, participants cycled either with their preferred technique (PT) during one session or were helped by a visual force-feedback to modify their pedalling pattern during the other one (FB). Index of pedalling effectiveness was significantly (P<0.05) improved during FB (41.4±5.5%); compared with PT (36.6±4.1%). Prolonged cycling induced a significant reduction of maximal power output, which was greater after PT (-15±9%) than after FB (-7±12%). During steady-state FB, vastus lateralis muscle activity was significantly (P<0.05) reduced, whereas biceps femoris muscles activities increased compared with PT. Gross efficiency (GE) did not significantly differ between the two sessions, except during the first 15 min of exercise (FB: 19.0±1.9% vs PT: 20.2±1.9%). Although changes in muscular coordination pattern with feedback did not seem to influence GE, it could be mainly responsible for the reduction of muscle fatigue after prolonged cycling. |
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Authors:
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J Theurel; M Crepin; M Foissac; J J Temprado |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-21 |
Journal Detail:
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Title: Scandinavian journal of medicine & science in sports Volume: - ISSN: 1600-0838 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-21 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9111504 Medline TA: Scand J Med Sci Sports Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2011 John Wiley & Sons A/S. |
Affiliation:
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Institute of Movement Sciences E-J Marey, UMR CNRS 6233, Aix-Marseille University, Parc Scientifique et Technologique de Luminy, Marseille, France INSERM U887 Laboratory, Faculty of Sport Sciences, University of Bourgogne, Dijon, France Oxylane Research, Villeneuve d'Ascq cedex, France. |
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