My Jump Lab应用程序评估前交叉韧带重建术后垂直跳跃表现的信度和效度
简介
在ACLR后6–24个月、已获准重返运动测试的102例受试者中，My Jump Lab评估单腿垂直跳和单腿下落跳的重测信度优（ICC 0.992–0.997；SEM 0.24–0.41 cm；MDC 0.65–1.14 cm）。其跳高、RSI和LSI与测力台的相关强至很强（r分别为0.786–0.987、0.975、0.760–0.983），仪器间信度对飞行…
英文摘要
BACKGROUND: To evaluate the test-retest reliability and validity of My Jump Lab compared with a force platform for assessing vertical jump performance after anterior cruciate ligament reconstruction (ACLR). METHODS: A total of 102 individuals, 6-24 months post-ACLR and cleared for return-to-sport (RTS) testing, performed the single-leg vertical jump (SLVJ) and single-leg drop jump (SLDJ), assessed using My Jump Lab and a force platform. Jump height derived from flight time (FT) and take-off velocity (ToV), reactive strength index (RSI) and limb symmetry index (LSI) were analyzed. Test-retest reliability, inter-instrument reliability, agreement and association, diagnostic accuracy, and association with force-platform-derived kinetic (force at zero velocity, peak landing force, and concentric net impulse) variables were assessed. RESULTS: My Jump Lab demonstrated excellent test-retest reliability (intraclass correlation coefficient (ICC) = 0.992-0.997; standard error of measurement = 0.24-0.41 cm; minimal detectable change = 0.65-1.14 cm). Associations with the force platform were strong to very strong for jump height (r = 0.786-0.987), RSI (r = 0.975), and LSI (r = 0.760-0.983). Inter-instrument reliability was excellent for FT and RSI (ICC = 0.974-0.983) and fair for ToV (ICC = 0.750). Bland-Altman analyses showed mean biases ranging from -1.21 to -0.08 cm for jump height and -0.29 cm/s for RSI. Accuracy for LSI ≥ 90% ranged from 87.3% to 94.1%. SLVJ jump height showed moderate-to-good associations with force-platform-derived kinetic (r = 0.534-0.678). CONCLUSIONS: My Jump Lab provides reliable and valid measures of vertical jump performance post-ACLR and may complement RTS assessment when force platforms are unavailable.