American College of Sports Medicine(1998).Position stand: The recommended quantity and quality of exercise for developing and maintaining cardiorespiratory and muscular fitness and flexibility in healthy adults.Medicine and Science in Sports and Exercise.30,975-971.
Blair, S. N.,Kohl, H. W.,Barlow, C. E.,Paffenbarger, R. S.,Gibbons, L. W.,Macera, C. A.(1995).Changes in physical fitness and all-cause mortality: A prospective study of healthy and unhealthy men.Journal of the American Medical Association.273,1093-1098.
Blair, S. N.,Kohl, H. W.,Paffenbarger, R. S.(1989).Physical fitness and all-cause morlity.The Journal of the American Medical Assocation.262,2395-2401.