Protein supplementation in athletes shows no benefit over that of good food.
A new study of all existing literature on protein supplements in athletes finds no benefit beyond what can be obtain in normal food. Past reported benefits in athletes resulted from giving supplements after several hours without food when any food substance would have improved performance. Authors report that up to 20% of protein supplements have anabolic hormones, testosterone and nadrolone not listed in the ingredients.
PositiveTip: For athlete's and the rest of us, there is no better choice than a good diet.