Balneo and PRM Research Journal, cilt.17, sa.1, 2026 (ESCI, Scopus)
The aim of this study was to examine the concurrent reliability validity and of the Output Sport system compared with the VALD ForceDecks system during countermovement jump (CMJ) and squat jump (SJ) in elite basketball players; Twelve elite male basketball players (age: 20.3 ± 1.2 years; body height: 201.8 ± 2.7 cm; body mass: 87.4 ± 3.9 kg; BMI: 21.4 ± 0.7 kg/m²) from a top-division club participated in the study. The jump height, flight time, and take-off velocity were recorded during CMJ and SJ simultaneously using the Output Sport system and the VALD ForceDecks system. Concurrent validity between two systems was assessed using Pearson’s correlation (r) with 95% confidence intervals, while reliability was evaluated using Cronbach’s α coefficients; The Output Sport system showed excellent validity relative to the VALD ForceDecks system for CMJ (jump height, flight time, and take-off velocity) with correlation coefficient ranging from r = 0.961–0.976 and p < 0.001. Additionally, Output Sport system showed hight validity compared to the VALD ForceDecks system for SJ (jump height, flight time, and take-off velocity) with cor-relation coefficient ranging from r = 0.803–0.918 and p < 0.001. Both systems demonstrated comparable and acceptable-to-good reliability for CMJ (jump height, flight time, and take-off velocity) (Cronbach’s α = 0.759–0.837) and SJ (Cronbach’s α = 0.761–0.837), indicating similar internal consistency across devices. The Output Sport system provides excellent valid and good reliable measurements of CMJ and SJ performances compared to the laboratory-standard VALD ForceDecks system. Its portability and ease of use make it an efficient and practical tool for monitoring neuromuscular and explosive performances in elite basketball players under field conditions..