Do Testosterone And Growth Hormones Impact On Muscle Building? Study Says They Don’t

Editor's Choice Main Category: Sports Medicine / Fitness Also Included In: Endocrinology Article Date: 19 Jun 2012 - 0:00 PDT

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Daniel West, graduate student in the Department of Kinesiology at McMaster, and lead author in both studies, explained that many people, including experts, have been convinced for a long time that anabolic hormones are vital for muscle protein synthesis, a process that eventually leads to larger muscles.

West said:

Participants managed to make new muscle protein at the same rate, despite huge differences in testosterone levels

As muscle proteins eventually lead to muscle growth, their finding was an important one, the authors explained.

West said:

Muscle mass gains ranged from negligible to over 12 pounds (about 5 kilograms). However, the scientists found no relationship between muscle growth and their levels of testosterone and growth hormone after exercise. In other words, muscle growth or strength increase were not linked to growth hormone or testosterone levels.

Muscle growth and strength increases were not associated with raised levels of testosterone or growth hormones after weight training

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Do Testosterone And Growth Hormones Impact On Muscle Building? Study Says They Don't

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