1. Physical activity and health: report of the Surgeon General;Centers for Disease Control,1996
2. Moderate leisure time physical activity: who is meeting the public health recommendations?;Jones;Arch Family Med,1998
3. Prevalence of physical activity, including lifestyle activities among adults—United States, 2000–2001;Centers for Disease Control;MMWR,2003
4. Healthy people 2010. 2nd edition. Objectives for improving health;US Department of Health and Human Services,2000
5. Physical activity, exercise, and physical fitness: definitions and distinctions for health-related research;Caspersen;Public Health Rep,1985