Muscle action during locomotion: a comparative perspective
نویسندگان
چکیده
منابع مشابه
Muscle action during locomotion: a comparative perspective.
This essay explores how the properties of striated muscles are matched to the tasks they perform during running, swimming and flying. During exercise the major locomotory muscles undergo alternate cycles of lengthening and shortening. Force development is greatly influenced by the timing of stimulation in relation to the length-change cycle and by the nature of elastic structures connecting the...
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Few quantitative data exist to describe the activity of the distal muscles of the equine forelimb during locomotion, and there is an incomplete understanding of the functional roles of the majority of the forelimb muscles. Based on morphology alone it would appear that the larger proximal muscles perform the majority of work in the forelimb, whereas the smaller distal muscles fulfil supplementa...
متن کاملEstimate of muscle-shortening rate during locomotion.
All skeletal muscle can produce roughly the same maximal cross-sectional force; however, the power (energy X time-1) required to develop and maintain that force increases with increasing contraction velocity. Thus the rate of muscle tension development may be of primary importance in setting the energy demand of contracting muscle. We have estimated the rate of muscle shortening during terrestr...
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متن کاملPoint: The muscle pump raises muscle blood flow during locomotion.
A long-standing gap in our understanding of muscle perfusion during muscular activity has been the huge (2 ) discrepancy between the levels of blood flow achieved by “maximal” chemical vasodilation or electrically evoked contractions and those achieved during locomotory-type exercise. The classical prevailing thought has been that there must be some unidentified or “missing” vasodilator substan...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 1991
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.160.1.167