Effects of long-term volleyball training on multimodal responses in adolescent female athletes: a follow-up study

The results of this study imply that the autonomic function after chronic volleyball training in adolescent female athletes may be enhanced due to training adaptation, although the immune function may be attenuated as a result of cumulative overtraining. Moreover, long-term volleyball training in adolescent female athletes appears to suppress bone resorption and not to induce cumulative damage to renal function.