1Mc Ginnis IM ,etal.actual causes of death in the united states [J] .lAMA .1993,270.
2U,S.Department of health and Human Service.Phycical activity and Health:a Report of the Surgeon General[M].Atlanta,GA:U.S.De- parement of Health and Human Service,Centex for Distance Control and Prevention, NationalCenter for Diseases prevention and Health promention,1996.
3姚凯峰珊飙.国内外体育运动研究现状分析.Journal of Nanjing Institute of Physical Education ( Natural Science).Vol.10No,3Jun, 2011.
