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This study investigated the test-retest reliability and validity of a novel smartphone application (app), Jump Pro, for assessing jump performance. Fifty healthy adults (25 males = 21.7 ± 2.6 yrs; 25 females = 22.8 ± 3.0 yrs) performed countermovement jump (CMJ), bilateral depth jump (BDJ), and single-legged DJ (SDJ) in two visits. Jump performance was assessed using a Jump Pro and a PASCO force plate. A customized single-beam sensor was paired to a smartphone app for data collection and reliability was established using the Intraclass correlation coefficient (ICC3,1). The validity was examined via Bland-Altman difference plots. Results revealed strong agreement between Jump Pro and the criterion. The Jump Pro demonstrated good to excellent test-retest reliability and was valid to portable force plates across all jump performances. In conclusion, the Jump Pro is a reliable and valid tool for assessing jump performance.
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Lo et al. (2025) studied this question.
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