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Regular Exercise May Boost Testosterone Levels in Overweight Men

Obesity is associated with lower levels of testosterone, which can result fatigue, decreased sex drive and decreases in muscle and bone mass. A recent study suggests that aerobic exercise may boost testosterone levels in overweight and obese men.


Participants in the study included 16 normal weight men and 28 overweight/obese men, none of whom exercised regularly. At the beginning of the study, the overweight and obese men had significantly lower total, free, and bioavailable testosterone levels than the normal weight men.


All of the participants completed a 12-week aerobic exercise plan that included 40-60 minutes of walking or jogging one to three days per week. The researchers recorded testosterone levels at the beginning and end of the study.


After the 12 weeks of exercise, the researchers noted significant increases in testosterone levels in the overweight and obese men. The effects were particularly pronounced in the men who exercised vigorously. Overall, total testosterone levels went from 15.4 nnol/l to 18.1 nmol/l, free testosterone levels went from 0.33 nnol/l to 0.40 nmol/l and bioavailable testosterone levels went from 8.07 nnol/l to 9.63 nmol/l.


The exercise intervention had significant effect on testosterone levels in the normal-weight men


The researchers also noted significant decreases in body weight in the overweight/obese group, which they hypothesized was one of the factors that led to the increase in serum testosterone levels. They also found that vigorous physical activity was independently associated with higher testosterone levels, suggesting that it may be the main factor for increasing testosterone levels.


Researchers from Tsukuba University and Ryutsu Keizai University in Japan conducted the study. It was presented at the Integrative Biology of Exercise 7 meeting that took place in Phoenix the week of November 2, 2016. 


Regular exercise is one of the best things you can do for your health. Previous clinical studies suggest that even moderate exercise may help with blood sugar control, reduce body weight, improve heart health, improve respiratory health and reduce your risk of dying prematurely.

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