Cost of force development as a function of stimulus rate in rat soleus muscle

Show simple item record Loiselle, Denis en 2011-09-06T03:54:54Z en 1982 en
dc.identifier.citation Am J Physiol 243(5):C242-C246 1982 en
dc.identifier.issn 0363-6143 en
dc.identifier.uri en
dc.description.abstract The energy cost (determined myothermically) and mean stress (force per cross-sectional area) development of soleus muscles from adult rats were determined. Muscles were stimulated at various frequencies from 0.25 to 100 Hz over a 4-s interval, and the resulting stress-time integral was averaged over this period to yield a total heat vs. mean stress relation. This relation was characterized by three zones, i.e., 1) a linear zone corresponding to unfused twitches, 2) an intermediate zone corresponding to partial fusion during the relaxation phase only, and 3) a second linear zone corresponding to partially and fully fused tetani. The energy cost of mean stress development in the twitch zone was about four times higher than that of the fusion zone. The results are discussed in terms of the firing frequencies at which motor unit recruitment occurs in mammalian slow-twitch muscles. en
dc.relation.ispartofseries Am J Physiol en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from en
dc.rights.uri en
dc.title Cost of force development as a function of stimulus rate in rat soleus muscle en
dc.type Journal Article en
pubs.issue 5 en
pubs.begin-page C242 en
pubs.volume 243 en
dc.rights.holder Copyright: 1982 the American Physiological Society en
dc.identifier.pmid 7137334 en
pubs.end-page C246 en
dc.rights.accessrights en
pubs.subtype Article en
pubs.elements-id 63252 en Bioengineering Institute en ABI Associates en
pubs.record-created-at-source-date 2010-09-01 en
pubs.dimensions-id 7137334 en

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