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EDUCATION |
Research Unit for Exercise Science and Sports Medicine, University of Cape Town, Newlands, South Africa
Correspondence to:
Correspondence to:
Dr St Clair Gibson
University of Cape Town, Research Unit for Exercise Science and Sports Medicine, Sports Science of South Africa, P O Box 115, Newlands 7725, South Africa; Agibson{at}sports.uct.ac.za
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.
Abbreviations: EMG, electromyographic; IEMG, integrated electromyographic; MVC, maximal voluntary contraction
Keywords: teleoanticipation; fatigue; brain; neural recruitment; pacing strategies
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