Physical activity and its effects on reproduction

These results suggest that weight loss through physical activity could improve sexual function in men

Leanne M Redman

2010

Scholarcy highlights

  • American College of Sports Medicine, have recently announced new recommendations to the public for physical activity
  • In many cases of positive energy balance, reproductive function in men and women can be restored with simple changes in lifestyle habits that lead to mild reductions in body weight and body fat and improvements in insulin sensitivity
  • Despite the widespread consensus of the importance of physical activity for health, there is continued debate surrounding the dose of physical activity necessary to achieve and maintain a desired body weight. It has been shown by dozens of activity were associated with a greater incidence of erectile dysfunction. These results suggest that weight loss through physical activity could improve sexual function in men
  • Amenorrhoeic athletes have a disorganized and irregular 24-h LH pulse profile and an increased pituitary responsiveness to exogenous gonadotrophin-releasing hormone. Together these findings suggest the dysfunction of the reproductive axis in these women originates from the GnRH pulse generator in the hypothalamus and not the pituitary
  • The ability of exercise to improve insulin sensitivity may prove to be an important benefit for women with polycystic ovarian syndrome. At both extremes of the energy spectrum, disorders of chronic energy excess and energy deficiency are characterized by a wide range of reproductive disorders, including menstrual irregularity, anovulation, PCOS and infertility in women, and erectile dysfunction and altered spermatogenesis in men
  • Over the course of the six months, serum testosterone levels fell by 30%, and a regression analysis indicated that caloric deficit per kilogram of body weight was the most significant predictor of post-training testosterone levels
  • Laboratory research indicates that individuals may be able to prevent or reverse reproductive disruptions either by increasing energy expenditure in cases of energy excess, or by dietary reform in cases of energy deficits, there is an acute need for applied research to confirm this idea and to identify mechanisms by which the availability of energy per se regulates reproductive function in humans

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