Loaded 5 Sit-to-Stand Test to Determine the Force–Velocity Relationship in Older Adults: A Validation Study

Force–velocity profiling (F-v) evaluates muscle function through the identification of maximum force (F0), velocity (V0), power (Pmax) and optimal (Vopt). The purpose this study was to investigate validity feasibility loaded 5 Sit-to-Stand (5STS) force-velocity compared gold standard instruments (isokinetic Dynamometry, ISO) asses relationship between 5STS-derived indexes with clinical markers mass strength. Forty-six older adults (21 females: 63.8 ± 3.9 yrs) performed 5STS (four different weight conditions) ISO tests (five velocities). Paired t-tests, regression analyses, Bland–Altman analysis were conducted. results showed significant differences in F0, V0, Vopt (p < 0.001) but no difference Pmax = 0.259) tests. Only F0 highly correlated (r 0.71, r 0.84, respectively). a not bias good precision 0.260, 34 W) only for Pmax. Large very large correlations 0.53 0.81) found In conclusion, could be feasible, valid, cost- time-efficient alternative characterization clinically relevant healthy adults.