title: Velocity of mammalian skeletal muscle contraction as a function of fiber type, activation, initial length and temperature.
abstract: Multiple stepwise regression analyses techniques were applied to develop modifications of the Hill force-velocity equation. Specifically, predictive models of the Hill a coefficient, the Hill b coefficient, and isometric strength P0 were developed for the following set of variables: the fraction of slow-twitch fibers (X), the recruitment magnitude (A), the initial muscle length (L), and the muscle temperature (T). Results indicate that the Hill a and Hill b coefficients and isometric strength P0 can be predicted with a high degree of accuracy. The utility of the equation is that it would allow development of a computer program to control the velocity of contraction of muscles with differing fiber compositions and lengths such as are found in the leg.
authors.affiliation: Department of Biomedical and Human Factors Engineering, Wright State University, Dayton, OH 45435.
authors.forename: C A
authors.initials: CA
authors.lastname: Phillips
authors.forename: R J
authors.initials: RJ
authors.lastname: Koubek
authors.forename: E
authors.initials: E
authors.lastname: Crouch
mesh_terms: D000818:Animals; D002415:Cats; D066298:In Vitro Techniques; D007537:Isometric Contraction / Q000502:physiology*; D008322:Mammals / Q000502:physiology*; D008954:Models, Biological; D012016:Reference Values; D012044:Regression Analysis; D012985:Software Design; D013696:Temperature