Table 4.
Concurrent validity of the spatiotemporal and kinematic parameters with clinical measures
| Dynamic gait index | 1-min walking test | 10-m walking test | |
|---|---|---|---|
| Speed (m/s) | r = 0.793** | r = 0.754** | r = −0.675** |
| Stride length (m) | r = 0.822** | r = 0.684** | r = −0.726** |
| Stride time (s) | r = − 0.645** | r = − 0.608** | r = 0.596** |
| Step length (m) | r = 0.806** | r = 0.707** | r = − 0.721** |
| Step time (s) | r = −0.658** | r = − 0.622** | r = 0.602** |
| Step width (m) | r = −0.400** | r = −0.342** | r = 0.332** |
| Cadence (step/min) | r = 0.614** | r = 0.654** | r = −0.557** |
| Step asymmetry (m) | r = −0.092 | r = −0.028 | r = 0.053 |
| Swing time (s) | r = 0.376** | r = 0.274* | r = −0.475** |
| Double support time (s) | r = −0.554** | r = −0.551** | r = 0.505** |
| Trunk obliquity (°) | r = −0.539** | r = −0.520** | r = 0.571** |
| Trunk tilt (°) | r = −0.599** | r = −0.427** | r = 0.688** |
| Trunk rotation (°) | r = 0.136 | r = −0.088 | r = 0.014 |
| Pelvic obliquity (°) | r = −0.180 | r = −0.147 | r = 0.073 |
| Pelvic tilt (°) | r = −0.344** | r = −0.297* | r = 0.317** |
| Pelvic rotation (°) | r = −0.056 | r = 0.021 | r = 0.049 |
| Hip abduction-adduction (°) | r = −0.342** | r = −0.184 | r = 0.281* |
| Hip flexion-extension (°) | r = 0.436** | r = 0.437** | r = −0.241* |
| Hip height variation (cm) | r = 0.191 | r = 0.368** | r = −0.173 |
| Knee valgus-varus alignment (°) | r = 0.034 | r = 0.080 | r = −0.037 |
| Knee flexion-extension (°) | r = 0.255* | r = 0.135 | r = −0.296** |
| Knee height variation (cm) | r = 0.013 | r = −0.036 | r = −0.126 |
| Ankle height variation (cm) | r = 0.436** | r = 0.536** | r = −0.342** |
Significant correlations of variable strength emerged between spatiotemporal and kinematic parameters obtained by the Kinect v2-based gait analysis and standardized clinical scales. *: p < 0.05. **: p < 0.01