Rommel
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Protein intakes greater than three times the recommended level do not enhance work capacity during intensive training. For athletes, muscle mass does not increase simply by eating high-protein foods. If lean tissue synthesis resulted from all of the extra protein intake consumed by the typical athlete, then mass would increase tremendously. For example, eating and extra 100g of protein daily would translate into a daily 500-g (1.1 lb) increase in muscle mass. This obviously does not happen. Additional dietary protein, after deamination, provides for energy or recycles as components of other molecules including stored fat in subcutaneous depots. Dietary protein intake significantly above recommended values can prove harmful because excessive protein breakdown strains liver and kidney function through the production and elimination of urea and other solutes.
McArdle, William. Katch, Frank. Katch, Victor.
Essentails of exercise physiology, second ed.
McArdle, William. Katch, Frank. Katch, Victor.
Essentails of exercise physiology, second ed.