LENGTH-TENSION RELATIONSHIP AND MUSCLE FORCE DETERMINATION.

One of the important tasks in analytic determination of internal muscle force distribution is that of describing the actuators, namely, muscles, with appropriate models. Numerous models have been proposed in the literature. The problem has been to develop a muscle model that is phenomenologically correct without being overwhelmingly complex for practical applications. The purposes of this study were, first, to review currently available information on muscle length-tension relationships under isometric contraction and then to implement these relationships to determine the muscle force distribution for given joint configurations and loading conditions.