1. Associations of light, moderate, and vigorous intensity physical activity with longevity. The Harvard alumni health study;Lee;Am J Epidemiol,2000
2. Physical activity and health: a report of the Surgeon General;Centers for Disease Control and Prevention,1996
3. Higher direct medical costs associated with physical inactivity;Pratt;Phys Sportsmed,2000
4. Promoting better health for young people through physical activity and sports. A report to the president from the Secretary of Health and Human Services and the Secretary of Education;Centers for Disease Control and Prevention,2000
5. Common hip injuries in sport;Boyd;Sports Med,1997