Investigation of the Stretch-Shortening Cycle Performance of Youth Female Volleyball Players According to Different Biological Maturation and Training Status.

This study examined the effects of biological maturation and training status on stretch-shortening cycle (SSC) performance in 120 youth female volleyball players categorized by maturation stage—pre-, mid-, and post-peak height velocity (PHV)—and training status (competitive vs. recreational). Results showed that maturation significantly influenced SSC-related measures including reactive strength index (RSI), ground contact time (GCT), flight time, jump height, and 20-m sprint time, with more mature athletes demonstrating better performance. Training status affected sprint time and GCT but did not significantly interact with maturation status, suggesting that maturation and training independently contribute to SSC performance. The findings highlight the importance of considering both biological maturation and training background when evaluating and planning training for youth female athletes.