7Fitzgerald L.Overtraining increases the susceptibility to infectionInternational Journal of Sports Medicine,1991.
8Lehmann,M. et al.Overtraining in endurance athletes: a brief reviewMedicine and Science in Sports and Exercise,1993.
9Cen Haowang,et al.The studies of skeletal muscle histochemistry in different load trained and cold bath treated after training rats, Program and Abstracts, 2nd INTERNATIONAJ CONFERENCE ON SPORTS MEDICINE, 1993, Beijing, China.
10Hooper. S. L,et al.Hormonal responses of elite swimmers to overtraining, Med.Sci. SportsExerc,1993.