Is there a connection between testosterone and muscle growth? Two distinct investigations conducted by researchers at McMaster University in Canada were published in the Journal of Applied Physiology and the European Journal of Applied Physiology. Contrary to popular belief among bodybuilders, they discovered that exercise-induced increases in testosterone and growth hormone did not seem to affect muscle development following weight training. Journal of Applied Physiology and European Journal of Applied Physiology both reported same results. Many people, including experts, have long been convinced that anabolic hormones are essential for the process of muscle protein synthesis, a procedure that ultimately results in larger muscles. The results of these two investigations, however, suggest that this common perception may be off base.

Extensive leg workouts

Scientists were curious about the effects of rigorous leg exercises on both sexes, so they studied men and women. All participants were able to create new muscle protein at the same rate, even though there was a 45-fold difference in the increase in testosterone levels. There were large differences in testosterone levels, but the subjects all managed to keep up the same pace of new muscle protein synthesis. Researchers say their finding is significant because it shows that storing extra protein in muscle tissue really increases muscular growth. Choosing the muscle building testosterone booster is essential here.

Exercise on Hormones

The participants in the research were all male and ranged in age from 18 to 30. There were 56 participants in all. They did so for a total of twelve weeks, during which time they worked out five times each week. When they had finished exercising, their hormone levels were checked. The improvements in muscle mass varied from almost nothing to more than 12 pounds (about 5 kilograms). The research conducted by the specialists could not find a correlation between increased hormone levels and increased muscle development. That is to say, neither increases in levels of growth hormone nor testosterone were connected with increases in muscle size or strength.


Neither elevated testosterone nor growth hormone levels after weight exercise were associated with enhanced muscular growth or strength. Opting for the muscle building testosterone booster is essential here. However, they did find that elevated cortisol levels were associated with gains in muscle mass. Given that cortisol is thought to have the opposite effect, namely to increase tissue breakdown and decrease the body’s capacity to synthesise proteins, this finding came as a surprise.

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