[5partan]

Let me summarize what I took away from the study you posted:

> One mechanism by which high dietary protein could induce bone loss may be related to the metabolic acid load engendered by such a diet. Meat and fish, which are high in sulfur-containing amino acids, generate appreciable fixed metabolic acid loads, whereas fruits and vegetables generate little acid and, in fact, may under certain circumstances generate more base than acid.

> Paradoxically, when fracture is the principal outcome, low protein intakes are associated with lower rates of fracture in most epidemiologic studies

My point about craving processed food high in table salt and sulfur-containing amino acids—which ought to be also high in protein—after an alkalizing high intensity training is still valid.

[superpermutat0r]

https://www.ncbi.nlm.nih.gov/pubmed/15546911

Here's the study I was looking for. It's all radioactive calcium.

There might be an effect on muscle tissue but it's still quite unresearched as to how does the body counter the acidity.