| Mechanical output and electromyographic parameters in males and females during fatiguing knee-extensions. | |
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MedLine Citation:
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PMID: 9774207 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The purpose of this study was to elucidate if the m. quadriceps femoris was fully activated during the first contractions of a series of repetitive maximal contractions and if there was any difference in the development of fatigue between sexes. To do this sixteen untrained subjects performed two series of contractions in an isokinetic dynamometer: one series of single maximum contractions and one series of repetitive maximum contractions. The EMG activity of m. vastus lateralis, m. vastus medialis and m. rectus femoris was recorded. The subjects were unable to perform maximum effort during the first repetitions of each trial, which might influence the results of fatigue studies, if these contractions are chosen as reference. We also found in contrast to other studies a decrease in RMS between the reference contraction and the fatigue level. We have not been able to display any difference between males and females during fatigue either in relative mechanical output nor in electromyographic parameters or experience in fatigue during isokinetic knee-extensions. |
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Authors:
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M L Wretling; K Henriksson-Larsén |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: International journal of sports medicine Volume: 19 ISSN: 0172-4622 ISO Abbreviation: Int J Sports Med Publication Date: 1998 Aug |
Date Detail:
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Created Date: 1998-12-17 Completed Date: 1998-12-17 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8008349 Medline TA: Int J Sports Med Country: GERMANY |
Other Details:
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Languages: eng Pagination: 401-7 Citation Subset: IM; S |
Affiliation:
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Department of Clinical Physiology, University of Umeå, Sweden. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Analysis of Variance Electromyography* Ergometry Female Humans Knee Joint / physiology* Male Muscle Contraction / physiology* Muscle Fatigue / physiology* Muscle, Skeletal / physiology* Perception Physical Endurance / physiology Rotation Sex Factors Stress, Mechanical Torque |
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