5Charles B Corbin,Gregory J Welk.Concepts of physical fitness[M].Mc:Graw-Hill Press,2002:35-49.
6Pate R R,M Pratt,S N Blair,et al.Physical activity and public health:a recommendation from the center for disease control and prevention and American college of sports medicine[J].JAMA,1995,273:402-407.
7U.S.department of health and human service.Physical activity and health:a report of the Surgeon General[M].Atlanta,GA:U.S.department of health and human service,center for disease control and prevention,national center for chronic disease prevention and health promotion,1996:90-144.
