Aerobics and Fitness Association of America American Alliance for Health, Physical Education, Recreation and Dance American College of Sports Medicine American Council on Exercise Cooper Institure for Aerobic Research International Health, Racquet and Sportsclub Association National Athletic Trainers' Association National Recreation and Parks Association National Strength and Conditioning Association Physician and Sportsmedicine Online Sportscience Surgeon General's Report on Physical Activity and Health United States Sports Academy
Updated: May 13, 2004
