Intra-tester and inter-tester reliability of maximum isokinetic hip and knee strength measurements with the exoskeleton in healthy young adults.

Purpose: The UGO exoskeleton enables gait training and simultaneous, Methods: Two independent cohorts were enrolled to determine the inter- and intra-tester reliability of the UGO exoskeleton. Each cohort consisted of 20 fourth-year undergraduate students (10 male, 10 female), with mean ages of 22.55 ± 1.05 and 21.40 ± 1.00 years, respectively. Testing was conducted by two experienced therapists. Peak isokinetic torque (Nm) in hip and knee flexors and extensors was collected. Relative and absolute reliability of peak torques were estimated using the intra-class correlation coefficient (ICC) and standard error of measurement (SEM), respectively. Bland-Altman plot was utilized to further elucidate the differences between tests obtained by different testers or by the same tester at different times. Results: Inter-tester reliability was good-to-excellent, as evidenced by ICCs of 0.791-0.906 for the hip and 0.859-0.975 for the knee (all Conclusions: The UGO exoskeleton provides a reliable, time-efficient, and functionally relevant means of quantifying hip- and knee-flexor and -extensor torque in healthy young adults while maintaining a posture that closely replicates natural gait.