RT Journal Article SR Electronic T1 From catastrophe to complexity: a novel model of integrative central neural regulation of effort and fatigue during exercise in humans: summary and conclusions JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 120 OP 124 DO 10.1136/bjsm.2003.010330 VO 39 IS 2 A1 T D Noakes A1 A St Clair Gibson A1 E V Lambert YR 2005 UL http://bjsm.bmj.com/content/39/2/120.abstract AB It is hypothesised that physical activity is controlled by a central governor in the brain and that the human body functions as a complex system during exercise. Using feed forward control in response to afferent feedback from different physiological systems, the extent of skeletal muscle recruitment is controlled as part of a continuously altering pacing strategy, with the sensation of fatigue being the conscious interpretation of these homoeostatic, central governor control mechanisms.