1Gerald D. Tharp,Marc W. Barnes. Reduction of saliva immunoglobulin levels by swim training[J] 1990,European Journal of Applied Physiology and Occupational Physiology(1):61~64
2Thomas B. Tomasi,Francis B. Trudeau,Dolores Czerwinski,Sue Erredge. Immune parameters in athletes before and after strenuous exercise[J] 1982,Journal of Clinical Immunology(3):173~178