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Task 4 Mechanisms of Fatigue
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- Tue Feb 06 2007

... Exercise Physiology BTEC Sport and Exercise Science Project Task 4: Mechanisms of Fatigue In this assignment I will be listing the mechanisms of fatigue, including neuromuscular fatigue. I will be listing the role of metabolites, and identifying the role of oxygen and other factors in the recovery process. Neuromuscular fatigue Neural fatigue Neural fatigue means a disruption of neuromuscular events. Fatigue occurs because of a decrease in calcium production. A failure of acetylcholine generation reduces the chance of an action potential. The CNS (central nervous system) may identify fatigue prior to physiological fatigue. This stops you from doing anymore exercise to avoid you from injury, which could be muscle soreness. Muscular fatigue Muscle fatigue means a decrease of muscular performance. It is an inability to maintain the standard power output. Muscle fatigues when there is a depletion of PC stores e.g. sprinting. Therefore there is an accumulation of lactic acid and a decrease in pH.













