1. Recommendations for the medical management of osteoarthritis of the hip and knee: 2000 update
2. The Cochrane;Van den Ende,2001
3. Work Group recommendations: 2002 Exercise and Physical Activity Conference, St. Louis, Missouri
4. US Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion. Physical activity and health: a report of the Surgeon General. Atlanta,GA; 1996.
5. US Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Division of Nutrition and Physical Activity. Promoting physical activity: a guide for community action. Champaign, IL: Human Kinetics; 1998.