Arce J C, De Souza M J, Pescatello L S, Luciano A A
Department of Obstetrics and Gynecology, University of Connecticut Health Center, Farmington 06030-1230.
Fertil Steril. 1993 Feb;59(2):398-404.
To investigate the effects of two forms of exercise, endurance training (running) and resistance training (weight lifting), on reproductive function in male athletes.
Cross-sectional study.
Reproductive Endocrinology and Exercise Laboratory.
Twenty-eight healthy male volunteers, 18 to 35 years of age, including 10 endurance-trained runners, 8 resistance-trained weight-lifters, and 10 sedentary controls.
MAIN OUTCOME MEASURE(S): Hormonal evaluation included determination of plasma levels of total testosterone (T), serum levels of free T, luteinizing hormone (LH), follicle-stimulating hormone, prolactin, and estradiol, and urinary excretion of LH. Semen analyses included an evaluation of sperm characteristics in terms of density, count, motility, and morphology, and a determination of in vitro sperm penetration of standard bovine cervical mucus.
Compared with sedentary controls, endurance-trained and resistance-trained athletes presented with significantly lower levels of total and free T. There were no significant differences in the serum levels of all other circulating and urinary hormone measurements among the three groups. Sperm density, motility, and morphology were significantly altered only in the endurance-trained runners. In vitro sperm penetration of standard cervical mucus was significantly reduced in the endurance-trained runners.
Both endurance and resistance training modify the male reproductive hormone profile in a similar manner; however, only endurance training, in the form of running, is associated with subclinical modifications in semen characteristics.
探讨两种运动形式，即耐力训练（跑步）和阻力训练（举重）对男性运动员生殖功能的影响。
横断面研究。
生殖内分泌与运动实验室。
28名年龄在18至35岁之间的健康男性志愿者，包括10名耐力训练的跑步者、8名阻力训练的举重运动员和10名久坐不动的对照组。
激素评估包括测定血浆总睾酮（T）水平、血清游离T、促黄体生成素（LH）、促卵泡激素、催乳素和雌二醇水平，以及尿LH排泄量。精液分析包括评估精子的密度、数量、活力和形态等特征，以及测定标准牛宫颈黏液的体外精子穿透能力。
与久坐不动的对照组相比，耐力训练和阻力训练的运动员总T和游离T水平显著降低。三组之间所有其他循环和尿液激素测量的血清水平没有显著差异。仅耐力训练的跑步者的精子密度、活力和形态有显著改变。耐力训练的跑步者标准宫颈黏液的体外精子穿透能力显著降低。
耐力训练和阻力训练均以相似的方式改变男性生殖激素谱；然而，只有以跑步形式进行的耐力训练与精液特征的亚临床改变有关。
