Monitoring CMJ-derived metrics and subjective recovery across a competitive microcycle in semi-professional women's volleyball.

Abstract

Jumping ability is a crucial element for success in volleyball. The countermovement jump (CMJ) is a reliable, non-invasive, and quick tool to periodically assess neuromuscular fatigue and performance, which, in combination with subjective measures, can offer a comprehensive view of fatigue/recovery status. The study aimed to: a) analyze changes in CMJ after a women's volleyball match based on playing time and b) evaluate the temporal perceived recovery and well-being. It was hypothesized that players would recover baseline values of CMJ and subjective variables 48 hours post-match. A descriptive, and repeated-measures design was proposed. Twelve volleyball players were evaluated for changes in CMJ before and after a match, and at 24, 48, and 72 hours post-match. Outcome variables (jump height and reactive strength index modified), kinetic variables (concentric impulse), and jump strategy variables (movement time and time to peak power) were analyzed. Perceived recovery and well-being scales assessed perceived recovery and well-being. Significant changes were observed in jump height, concentric impulse, and reactive strength index modified between pre-match and 48 hours post-match in players with less playing time. In the high-play time group, significant changes in these variables were observed between pre-match and 48 and 72 hours. Perceived recovery and well-being were not significantly affected by match play. Competition did not significantly affect CMJ variables, suggesting that volleyball does not reduce jumping ability immediately after competing, which has direct implications for microcycle structure. The study highlights the importance of continuous monitoring of performance and recovery in volleyball. However, these findings should be interpreted with caution due to the small sample size of the study.