overtraining syndrome

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A combination of signs and symptoms resulting from overtraining, which typically causes the overtrained athlete to feel mentally fatigued and unable to perform maximally. The symptoms of overtraining are highly individualized, but many overtrained athletes have an increased basal metabolic rate and elevated resting heart rate; they suffer from insomnia, decreased appetite, and nausea; they lose body weight because of a negative nitrogen balance; and the rate of return of their exercise pulse rate to resting pulse rate is delayed. The presence of any one or more of these symptoms should alert a coach or athlete to the possibility of overtraining. Overtraining syndrome is thought to involve changes in the nervous system and endocrine system, particularly the hypothalamus. Overtraining appears to be associated with depressed immunity, increasing the risk of infection.

Subjects: Sports and Exercise Medicine.

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