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J Biomech. 2001 Mar;34(3):409-15.

Muscle recruitment by the min/max criterion -- a comparative numerical study.

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Institute of Mechanical Engineering, Aalborg University, Pontoppidanstraede 101, 9220 Aalborg East, Denmark.


This paper introduces the min/max criterion for simulation of muscle recruitment in multiple muscle systems. The criterion is introduced and justified by comparison to two known criterion types: the polynomial criterion and the soft saturation criterion. The comparison is performed on a planar three-muscle elbow model performing a dumbbell curl. A generalized form of the soft saturation criterion is introduced, and it is shown that the min/max criterion can be interpreted as the limit of the classical criteria when the exponents in their mathematical expressions approach infinity. We finally show how the min/max criterion can be cast into a form that allows for efficient and robust numerical solution by linear programming. It is concluded that the min/max criterion possesses a number of attractive physiological as well as algorithmic advantages.

[Indexed for MEDLINE]

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