6Sanchis-Gimeno JA,Casas-Roman E,Garcia-Campero C,et al.Anatomical location of athletic injuries during train-ing: a prospective two year study in 2701 athletes[J]. Br JSports Med,2005,39(7):467.
7Johnson A,Doherty PJ,Freemont A.Investigation ofgrowth,development, and factors associated with injury inelite schoolboy footballers: prospective study[J]. Br MedJ,2009,26,338:b490.
8Le Gall F,Carling C,Reilly T. Biological maturity and in-jury in elite youth football[J]. Scand J Med Sci Sports,2007,17(5):564-572.
9Michaud PA,Renaud A,Narring F. Sports activities relat-ed to injuries- A survey among 9-19 year olds in Switzer-land[J]. Inj Prev,2001,7(1):41-45.
10Backous DD,Friedl KE,Smith N J,et al. Soccer injuriesand their relation to physical maturity[J].Am J Dis Child,1988,142(8):839-842.
