| Comparative trends in shortening velocity and force production in skeletal muscles. | |
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MedLine Citation:
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PMID: 12121850 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Skeletal muscles are diverse in their properties, with specific contractile characteristics being matched to particular functions. In this study, published values of contractile properties for >130 diverse skeletal muscles were analyzed to detect common elements that account for variability in shortening velocity and force production. Body mass was found to be a significant predictor of shortening velocity in terrestrial and flying animals, with smaller animals possessing faster muscles. Although previous studies of terrestrial mammals revealed similar trends, the current study indicates that this pattern is more universal than previously appreciated. In contrast, shortening velocity in muscles used for swimming and nonlocomotory functions is not significantly affected by body size. Although force production is more uniform than shortening velocity, a significant correlation with shortening velocity was detected in muscles used for locomotion, with faster muscles tending to produce more force. Overall, the contractile properties of skeletal muscles are conserved among phylogenic groups, but have been significantly influenced by other factors such as body size and mode of locomotion. |
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Authors:
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Scott Medler |
Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: American journal of physiology. Regulatory, integrative and comparative physiology Volume: 283 ISSN: 0363-6119 ISO Abbreviation: Am. J. Physiol. Regul. Integr. Comp. Physiol. Publication Date: 2002 Aug |
Date Detail:
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Created Date: 2002-07-17 Completed Date: 2002-08-15 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 100901230 Medline TA: Am J Physiol Regul Integr Comp Physiol Country: United States |
Other Details:
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Languages: eng Pagination: R368-78 Citation Subset: IM; S |
Affiliation:
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Department of Biology, Colorado State University, Fort Collins, Colorado 80523, USA. smedler@lamar.colostate.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Biomechanics Body Weight / physiology* Databases, Factual Humans Invertebrates Locomotion / physiology Muscle Contraction / physiology* Muscle, Skeletal / physiology Muscles / physiology* Physiology, Comparative Regression Analysis Stress, Mechanical Vertebrates |
| Grant Support | |
ID/Acronym/Agency:
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1-F32-AR-08597-01A1/AR/NIAMS NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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