: Relationship between testosterone and muscle growth Today I did a testosterone test and the result was 25.77 nmol/L (normal range 9.9 - 27.8). Can somebody tell me what this means in terms of muscle growth? (age almost 30)

Vote Up Vote Down   0 Reactions

Login to give Reaction!

While increasing testosterone levels above natural levels with the use of steroids can help add appreciable mass, increasing T levels within the natural range does not seem to have the same effect.
Endocrinology. 2006 Jan;147(1):141-54. Epub 2005 Oct 6.
In short, being close to the top of the range will not make you a effortless star athlete. You must still work hard like everyone else

Vote Up Vote Down   0 Reactions

Login to give Reaction!

Nothing really.

Having a healty testosterone level means only you dont have any disorder in your Hypotalamic-Pituitary-Gonadal Axis.

When you perform a workout you have a transient increase in in the levels of some of your hormones: testosterone is one of them.

It regulates the homeodynamic state of muscle by some signaling patterns involving certain molecular actors ( Akt-mTORC1 ).

Women are also capable of increasing muscle mass, even with their pratically non existent level of testosterone. The basal levels of this hormone are not a good predictor of ones potential to grow mass-wise, but they only influence the actual initial level of fat free mass ( and obviously other variables related to sex differences ).