The Influence of Muscle Model Complexity in Musculoskeletal Motion Modeling

[+] Author and Article Information
M. L. Audu, D. T. Davy

Orthopaedic Engineering Laboratory, Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, Ohio 44106

J Biomech Eng 107(2), 147-157 (May 01, 1985) (11 pages) doi:10.1115/1.3138535 History: Received July 27, 1984; Revised February 11, 1985; Online June 15, 2009


A comparative study of four different muscle models in a musculoskeletal motion problem is made. The models vary in complexity from the simple input-output model to the more complex model of Hatze [I]. These models are used to solve a minimum time kicking problem using an optimal control algorithm. The results demonstrate the strong influence of the model choice on the various predicted kinematic and kinetic parameters in the problem. The study illustrates some of the advantages and disadvantages involved in trade-offs between model complexity and practicability in musculoskeletal motion studies. The results also illustrate the importance of appropriate detailed parameter estimation studies in the mathematical modeling of the musculoskeletal system.

Copyright © 1985 by ASME
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