2000k-328 2002b-399 2007e-427 aminoacids aminoacidsinhumannutrition aspectphysiologique athletes bioenergetics boneandbones congresses dietaryproteins essential exercice exercise exercisetest exercisetests fractures medical militarymedicine muscles nutrition nutritionalaspects nutritionalphysiologicalphenomena nutritionalrequirements physicaleducationandtraining physicalexamination physicalfitness physiologicalaspects physiologicalaspectsofexercise physiologicalaspectsofsports physiologicaleffect physiology proteinsinhumannutrition qt255a1872008 qt255s9162002 qu55r74471999 rehabilitation running soldiers sports sportsmedicine standards stress stressfractures(orthopedics) testing unitedstates