Evidence for complex system integration and dynamic neural regulation of skeletal muscle recruitment during exercise in humans.

Research Unit for Exercise Science and Sports Medicine, University of Cape Town, Newlands, South Africa. <>
British journal of sports medicine (Impact Factor: 3.67). 01/2005; 38(6):797-806. DOI: 10.1136/bjsm.2003.009852
Source: PubMed

ABSTRACT A model is proposed in which the development of physical exhaustion is a relative rather than an absolute event and the sensation of fatigue is the sensory representation of the underlying neural integrative processes. Furthermore, activity is controlled as part of a pacing strategy involving active neural calculations in a "governor" region of the brain, which integrates internal sensory signals and information from the environment to produce a homoeostatically acceptable exercise intensity. The end point of the exercise bout is the controlling variable. This is an example of a complex, non-linear, dynamic system in which physiological systems interact to regulate activity before, during, and after the exercise bout.

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