IoT Retrofitting for a Remote Kinematics Laboratory in Engineering: Design, Implementation, and Technical Validation of a Prototype for the Study of UARM in a Hybrid Learning Environment

The aim of this study is to evaluate the effect of a plyometric training program on lower-limb explosive strength in volleyball players from the Pontificia Universidad Católica del Ecuador, Esmeraldas campus (PUCESE). Explosive strength is considered a key capacity for performance in actions such as spiking, blocking and jump serving, and was assessed indirectly through vertical jump height. A quantitative, applied, quasi-experimental design with pretest–posttest measurements in a single group of university players is proposed. The sample will be selected by convenience and will include active volleyball players who meet established criteria for age, training participation and absence of recent musculoskeletal injuries. The intervention will consist of an 8-week plyometric program with 3 weekly sessions, structured into warm-up, main part with plyometric exercises and cool-down. Explosive strength will be measured using Squat Jump (SJ) and Countermovement Jump (CMJ) tests, taking vertical jump height as the main outcome. Data will be analyzed in Microsoft Excel using descriptive statistics and the paired Student’s t-test to determine changes in explosive strength after the intervention.