1. Physical activity, exercise, and physical fitness: definitions and distinctions for health related research;Caspersen;Pub Health Rep,1985
2. Cardiovascular fitness: is it really necessary?;LaPorte;Phys Sportsmed,1985
3. Factor analysis of physical fitness tests;Baumgartner;Res Q,1972
4. A new definition of youth fitness;Pate;Phys Sportsmed,1983
5. Second factor analysis study of physical fitness tests;Zuidemia;Res Q,1974