FIFA 11+ in Young Female Volleyball Players

This study aims to investigate the effects of an 8-week FIFA 11+ exercise program on wellness, rating of perceived exertion (RPE), dynamic balance, and single-leg functional performance in young female volleyball players, as well as to examine the relationships among these variables. The study will also evaluate the program's effects on injury incidence and fear of reinjury. The study is original in applying the FIFA 11+, a well-established injury prevention program, to volleyball and evaluating its effects together with training-load parameters through a multidimensional approach. It is expected to contribute to the literature by proposing a comprehensive model for monitoring athletic performance and injury risk in young female volleyball players.

Inclusion Criteria * Female volleyball players aged 14-18 years * Regular participation in volleyball training for at least 1 year * Participation in training sessions at least 2 days per week * No history of a serious lower-extremity injury within the previous 6 months * Willingness to participate in the study and provision of written informed consent; for participants under 18 years of age, written parental or legal guardian consent will also be obtained Exclusion Criteria * History of an injury requiring surgery within the previous 6 months * Presence of acute pain or injury that prevents safe completion of the physical performance tests * Presence of a neurological disorder or systemic disease that may affect balance or physical performance * Inability to participate regularly in the FIFA 11+ exercise program * Development of an injury during the study period that prevents participation in the exercise program for more than 2 consecutive weeks