The effects of supraphysiologic doses of testosterone on muscle size and strength in normal men.

  title={The effects of supraphysiologic doses of testosterone on muscle size and strength in normal men.},
  author={S Halender and Bernice Rothman Hasin and T Homas W. S Torer and N Ancy and Berkant Erman and C Arlos C Allegari and B Renda C Levenger and T Homas J. B Unnell and Ruth A. Ricker and A Ida S Hirazi and R Ichard C Asaburi},
  journal={The New England Journal of Medicine},
Background Athletes often take androgenic steroids in an attempt to increase their strength. The efficacy of these substances for this purpose is unsubstantiated, however. Methods We randomly assigned 43 normal men to one of four groups: placebo with no exercise, testosterone with no exercise, placebo plus exercise, and testosterone plus exercise. The men received injections of 600 mg of testosterone enanthate or placebo weekly for 10 weeks. The men in the exercise groups performed standardized… 

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