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[Effects of different loading exercises on endogenous sex hormones and their metabolites].

Small loading and strengthening exercises were performed by 22 athletes(11 males and 11 females). The levels of serum hormones and their urinary metabolites were detected. The results showed that the serum levels of testosterone(T), free testosterone(FT) and 17-OH-progesterone(17-OHP) in male athletes exhibited no conspicuous changes. The excretion of their urinary androsteroids was significantly increased after exercises(P < 0.05), but significantly decreased in the recovery period(P < 0.05). After small loading exercises, their serum levels of T and FT revealed no obvious changes except those of 17-OHP which evidently increased in female athletes(P < 0.05); whereas the excretion of their urinary steroid hormones declined promptly after the exercises and in the recovery period (all P < 0.05). After strengthening exercises, the serum levels of T, FT and 17-OHP decreased distinctly in female athletes (all P < 0.05), the excretion of their urinary steroid hormones raised clearly after training and in the recovery period(P < 0.05). Therefore, it is suggested that the secretion and metabolism of sex hormones in the organism are influenced by the loading quality of sports during training, and sexual difference exists simultaneously.