Motor performance calls into play a number of complex physiological and biological systems. An understanding of the function and behavior of such systems is necessary if motor performance is to be properly analyzed and helpful if it is to be improved. The concepts of systems and control theory offer a powerful (though sometimes not fully exploited) methodological technique for achieving such an understanding. This paper discusses some of the elementary concepts of systems theory as applied to motor performance and presents qualitative discussions of its usefulness in that field.
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