Effect of training on fertility in men

Barari, A.; Shirali, S.; Azizzadeh, H.; Ghasemi, M.; Cheshmposh, M.
June 2014
Iranian Journal of Reproductive Medicine;Jun2014 Supplement, Vol. 12, p80
Academic Journal
Introduction: Aim of this study was to compare the effects of endurance and resistance training on parameters related to sexual function in untraining men including levels of testosterone, estradiol, SHBG. Recent researches confirm that exercise improves blood flow due to increased metabolic activity and changes in the secretion of certain hormones. Of course, depend on the type and intensity of training, changed in hormone levels may vary. Alteration in the levels of this important hormones, play important role in sperm production and fertility in men. Materials and Methods: Statistic population consisted of students of Islamic Azad University of Neka city. Volunteers were organized and randomly divided into endurance, resistance and control groups of eight individuals. Selected variables were measured before and after four weeks of exercise. Measurement of parameters was done by ELISA method. The t-test and one-way analysis of variance were used. To determine within and between groups different, Tukey test was used to show the significant changes in each variables. Results: The results showed that the levels of testosterone and estradiol, in endurance and resistance groups Sequence have a significant (p<0.05) increase and decrease respectively. SHBG levels were significantly increased only in the endurance group (p<0.05). But LH levels were significantly increased only in the resistance group (p<0.05). Conclusion: The endurance and resistance training can increase the release of nitric oxide and cGMP that may leads to vasodilate testis artery and increased production of testosterone. Increased testosterone and decrease estradiol in men cause sperm production and improve fertility.


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