| Influences of endurance training on the ultrastructural composition of the different muscle fiber types in humans. | |
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MedLine Citation:
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PMID: 4011389 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To investigate changes in the ultrastructure of the different muscle fiber types induced by endurance training ten sedentary subjects (five women and five men) were exercised on bicycle ergometers 5 times a week for 30 min. After 6 weeks of training there were significant changes in VO2max (+14%), in the percentage of type I (+12%) and type IIB fibers (-24%) as well as in the volume densities of mitochondria. The latter increased 35% in type I, 55% in type IIA and 35% in type IIB fibers. The relative increase in subsarcolemmal mitochondria was larger than in interfibrillar mitochondria in all fiber types. There was also a significant increase in the volume density of intracellular lipid in type II fibres. It is concluded that high intensity endurance training leads to an enhancement of the oxidative capacity in all muscle fiber types. |
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Authors:
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H Howald; H Hoppeler; H Claassen; O Mathieu; R Straub |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Pflügers Archiv : European journal of physiology Volume: 403 ISSN: 0031-6768 ISO Abbreviation: Pflugers Arch. Publication Date: 1985 Apr |
Date Detail:
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Created Date: 1985-08-12 Completed Date: 1985-08-12 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0154720 Medline TA: Pflugers Arch Country: GERMANY, WEST |
Other Details:
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Languages: eng Pagination: 369-76 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Female Histocytochemistry Humans Lipid Metabolism Male Microscopy, Electron Mitochondria, Muscle / ultrastructure Muscles / metabolism, ultrastructure* Physical Education and Training* Physical Endurance* Sarcolemma / ultrastructure |
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