Det finns inga nitrogenbalansstudier som visar på annat än bättre nitrogenbalans vid högre proteinintag, även om energimängden har ännu större påverkan.
"If an athlete is trying to increase muscle mass, then the goal would
not be nitrogen equilibrium, but positive nitrogen
balance. Examination of the nitrogen balance data
presented by Tarnopolsky et al. for strength-
trained athletes could be used to support the contention
that increased protein intake will increase nitrogen
balance in athletes during intense resistance training.
There are data to support the notion that all other
things being equal, the more protein ingested, the more
lean body mass may be increased."
Tipton & Wolfe, J Sports Sci. 2004 Jan;22(1):65-79. Protein and amino acids for athletes.
"Our results, along with virtually all data in the literature on the topic, suggest that increasing AMINO ACID intake will increase muscle mass, with all other variables remaining constant."
Robert Wolfe, J Nutr. 2002 Oct;132(10):3219S-24S. Regulation of muscle protein by amino acids.
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