###### Abstract
In this sense, utilizing force platform technology for analyzing vertical jump kinetics, kinematics, and jump strategy offers several advantages as it allows for a more comprehensive neuromuscular evaluation beyond just outcome measures, such as jump height or contact time [20]. By including force-time and strategy metrics, coaches can gain useful insights into an athlete's neuromuscular function. These metrics appear to be more responsive to change compared to jump height measures. This is especially noticeable after intense exercise, during recovery from injury, throughout long-term athlete development, and when evaluating neuromuscular function in various age groups [7; 21]. While the advantages of force platform technology are clear, there are several factors that need careful consideration. Numerous studies have recognized the limitations of relying solely on outcome measures and emphasized the importance of concurrently monitoring kinetics, kinematics and jump strategy as well [7; 20]. However, several factors may affect the reliability of volitional tests, such as fatigue, learning effects, motivation, and/or hormonal status that may be considered as sources of measurement error during testing [22]. Even though CMJ and DJ metrics obtained with force platforms can offer valuable information about female jumping players' performance [23; 24; 25], and there are likely differences in jumping force time metrics compared to other athletes [17; 18], the reliability of CMJ and DJ force-time metrics within a session (intrasession) and between different days or weeks (interday) are not thoroughly researched. Therefore, it seems crucial to evaluate the reliability of these tests with the aim of providing accurate information and minimum cut-off values on metrics associated with athletes' performance and neuromuscular status. The CMJ and DJ assessments represent an easy method to assess performance, demanding minimal equipment. Their reliability has been observed mainly in male team athletes. However, the intra- and intersession reproducibility of these evaluations in an ecologically valid setting, specifically among female volleyball players, remains an area yet to be thoroughly investigated. Given the potential influence of diverse sporting backgrounds on these metrics, the main objective of the present study is to analyze the absolute and relative reliability of both CMJ and DJ metrics within and between sessions in the context of semi-professional female volleyball players. The hypothesis for this study is that concentric metrics of the CMJ and DJ tests will exhibit the highest reliability, both within a single testing session (intrasession reliability) and across different testing days (interday reliability) in semi-professional female volleyball players. In summary, this study aims to contribute to the existing literature by providing valuable information on the reliability of the CMJ and DJ outcomes, kinetics, kinematics, and jump strategy using force platforms in semi professional female volleyball players. This information can allow volleyball coaches and strength and conditioning professionals to better understand the reliability of several metrics of vertical jumps.