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Relationship between force and stiffness in muscle fibers after stretch

, : Relationship between force and stiffness in muscle fibers after stretch. Journal of Applied Physiology 99(5): 1769-1775

The purpose of this study was to evaluate the relationship between force and stiffness after stretch of activated fibers, while simultaneously changing contractility by interfering with the cross-bridge kinetics and muscle activation. Single fibers dissected from lumbrical muscles of frogs were placed at a length 20% longer than the plateau of the force-length relationship, activated, and stretched by 5 and 10% of fiber length ( speed: 40% fiber length/s).


PMID: 16002777

DOI: 10.1152/japplphysiol.00010.2005

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