Are there any studies showing how much protein synthesis is increased while on aas?

[cootermcgraw]

Found these studies from earlier today. I always see bodybuilders on aas that eat crazy high amounts of protein and was judt wondering if it was really necessary or benefial. Not hating on protein at all lol.


*Tarnopolsky et al. (1992) observed no differences in whole body protein synthesis or indexes of lean body mass in strength athletes consuming either 0.64g/lb or 1.10g/lb over a 2 week period. Protein oxidation did increase in the high protein group, indicating a nutrient overload.***8226;** *

Walberg et al. (1988) found that 0.73g/lb was sufficient to maintain positive nitrogen balance in cutting weightlifters over a 7 day time period.***8226;** *

Tarnopolsky et al. (1988) found that only 0.37g/lb was required to maintain positive nitrogen balance in elite bodybuilders (over 5 years of experience, possible previous use of androgens) over a 10 day period. 0.45g/lb was sufficient to maintain lean body mass in bodybuilders over a 2 week period. The authors suggested that 0.55g/lb was sufficient for bodybuilders.***8226;** *

Lemon et al. (1992) found no differences in muscle mass or strength gains in novice bodybuilders consuming either 0.61g/lb or 1.19g/lb over a 4 week period. Based on nitrogen balance data, the authors recommended 0.75g/lb.***8226;** *

Hoffman et al. (2006) found no differences in body composition, strength or resting hormonal concentrations in strength athletes consuming either 0.77g/lb or >0.91g/lb over a 3 month period.

 

[joliver]

I think most of this is common sense. If muscle is made of protein, you had better make sure you have the raw material required to build that muscle. You don't want you diet to be the limiting reagent in the process. It is better to eat 2g/lb and only need .5g/lb than to need .75g to build muscle and only supply .5g/lb.

I understand the pursuit of an answer, but you would be better off determining your own nitrogen balance using a urea nitrogen test.