| Relationships among peak power output, peak bar velocity, and mechanomyographic amplitude during the free-weight bench press exercise. | |
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MedLine Citation:
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PMID: 20845222 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The purpose of this study was to examine the relationships among mechanomyographic (MMG) amplitude, power output, and bar velocity during the free-weight bench press exercise. Twenty-one resistance-trained men [one-repetition maximum (1-RM) bench press = 125.4+18.4 kg] performed bench press muscle actions as explosively as possible from 10% to 90% of the 1-RM while peak power output and peak bar velocity were assessed with a TENDO Weightlifting Analyzer. During each muscle action, surface MMG signals were detected from the right and left pectoralis major and triceps brachii, and the concentric portion of the range of motion was selected for analysis. Results indicated that power output increased from 10% to 50% 1-RM, followed by decreases from 50% to 90% 1-RM, but MMG amplitude for each of the muscles increased from 10 to 80% 1-RM. The results of this study indicate that during the free-weight bench press exercise, MMG amplitude was not related to power output, but was inversely related to bar velocity and directly related to the external load being lifted. In future research, coaches and sport scientists may be able to estimate force/torque production from individual muscles during multi-joint, dynamic constant external resistance muscle actions. |
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Authors:
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Matt S Stock; Travis W Beck; Jason M Defreitas; Michael A Dillon |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of sports sciences Volume: 28 ISSN: 1466-447X ISO Abbreviation: J Sports Sci Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2011-04-15 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8405364 Medline TA: J Sports Sci Country: England |
Other Details:
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Languages: eng Pagination: 1309-17 Citation Subset: IM |
Affiliation:
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Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma 73019-6081, USA. mattstock@ou.edu |
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Descriptor/Qualifier:
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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