There is no physical reason for athletes to increase protein intake with supplements, says the German Nutrition Society (DGE), who recommend a balanced diet to achieve all protein requirements.
In the last of seven position papers by the society, the paper recommends that protein intake depending on training conditions and goals should be at approx. 1.2-2.0 grams per kilogram (g /kg) body weight.
Regarding supplementation. Dr Helmut Heseker, professor of nutritional science at the university of Paderborn states, “In the everyday nutritional routine of athletes there is no physiological reason to supplement protein intake with supplements and a balanced diet is usually superior to supplements.”