| Effects of long- and short-term fatiguing stretch-shortening cycle exercises on reflex EMG and force of the tendon-muscle complex. | |
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MedLine Citation:
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PMID: 12883895 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study examined the fatigue effects of stretch-shortening cycle exercises of different intensity and duration on stretch reflex EMG and mechanical responses of the triceps surae muscle. Twelve subjects performed either a 10-km run ( n=6) or short but exhaustive rebound exercise on a sledge apparatus ( n=6). Passive reflex tests (mechanically induced ankle dorsiflexions) were examined before, after as well as 2 h, 2 and 7 days after exercise. Mechanical reflex responses were recorded from the ergometer torque signal. An acute contractile failure was observed as large reductions in twitch responses, especially in the sledge subgroup who showed high post-exercise peak blood lactate and an increased EMG/torque ratio. Independently of the exercise, the delayed fatigue analysis revealed strong relationships between the reflex-induced EMG and mechanical changes. In addition to muscle damage, these results may be explained by inhibitory effects via the sensitisation of small muscle afferents particularly during the exercise-induced delayed recovery process. |
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Authors:
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C Nicol; S Kuitunen; H Kyröläinen; J Avela; P V Komi |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2003-07-23 |
Journal Detail:
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Title: European journal of applied physiology Volume: 90 ISSN: 1439-6319 ISO Abbreviation: Eur. J. Appl. Physiol. Publication Date: 2003 Nov |
Date Detail:
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Created Date: 2003-12-03 Completed Date: 2004-08-18 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 100954790 Medline TA: Eur J Appl Physiol Country: Germany |
Other Details:
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Languages: eng Pagination: 470-9 Citation Subset: IM |
Affiliation:
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Department of Biology of Physical Activity, University of the Mediterranean, 163 avenue de Luminy, 13288, Marseille Cedex 9, France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Afferent Pathways / physiology Bicycling / physiology* Biomechanics Electromyography Humans Male Muscle Fatigue / physiology* Muscle, Skeletal / physiology* Reflex, Stretch / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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