| Comparison of responses to strenuous eccentric exercise of the elbow flexors between resistance-trained and untrained men. | |
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MedLine Citation:
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PMID: 18550979 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study compared resistance-trained and untrained men for changes in commonly used indirect markers of muscle damage after maximal voluntary eccentric exercise of the elbow flexors. Fifteen trained men (28.2 +/- 1.9 years, 175.0 +/- 1.6 cm, and 77.6 +/- 1.9 kg) who had resistance trained for at least 3 sessions per week incorporating exercises involving the elbow flexor musculature for an average of 7.7 +/- 1.4 years, and 15 untrained men (30.0 +/- 1.5 years, 169.8 +/- 7.4 cm, and 79.9 +/- 4.4 kg) who had not performed any resistance training for at least 1 year, were recruited for this study. All subjects performed 10 sets of 6 maximal voluntary eccentric actions of the elbow flexors of one arm against the lever arm of an isokinetic dynamometer moving at a constant velocity of 90 degrees .s. Changes in maximal voluntary isometric and isokinetic torque, range of motion, upper arm circumference, plasma creatine kinase activity, and muscle soreness before, immediately after, and for 5 days after exercise were compared between groups. The trained group showed significantly (P < 0.05) smaller changes in all of the measures except for muscle soreness and faster recovery of muscle function compared with the untrained group. For example, muscle strength of the trained group recovered to the baseline by 3 days after exercise, where the untrained group showed approximately 40% lower strength than baseline. These results suggest that resistance-trained men are less susceptible to muscle damage induced by maximal eccentric exercise than untrained subjects. |
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Authors:
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Michael J Newton; Greg T Morgan; Paul Sacco; Dale W Chapman; Kazunori Nosaka |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of strength and conditioning research / National Strength & Conditioning Association Volume: 22 ISSN: 1533-4287 ISO Abbreviation: J Strength Cond Res Publication Date: 2008 Mar |
Date Detail:
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Created Date: 2008-06-13 Completed Date: 2008-09-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9415084 Medline TA: J Strength Cond Res Country: United States |
Other Details:
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Languages: eng Pagination: 597-607 Citation Subset: IM |
Affiliation:
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School of Exercise, Biomedical, and Health Sciences, Edith Cowan University, Western Australia, Joondalup, Australia. m.newton@ecu.edu.au |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Creatine Kinase / blood Elbow Joint / physiology* Humans Male Muscle Contraction / physiology* Muscle Strength / physiology Muscle Strength Dynamometer Muscle, Skeletal / physiology* Pain / physiopathology Range of Motion, Articular / physiology Torque Upper Extremity / anatomy & histology Weight Lifting / physiology* |
| Chemical | |
Reg. No./Substance:
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EC 2.7.3.2/Creatine Kinase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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