4Sandra L. David C N em an. Anne J Balk et al.The Effects of Moderate Exercise Training on Immune Response Med[J]. Set Sports Exercise,1991,23(1):64-69.
5Gleeson M, McDonald WA, Cripps AW, et al. The effect on immunity of long-term intensive training in elite swimmers [J]. Clin Exp Immunol,1995,102:210-216.
6Pyne DB, et al. Effects of Intensive Exercise Training on Immunity in Athetes [J] .Int J Sports Med, 1998,19:s183-s194.
