Table 1 Correlation coefficients between IMU- and optical-based kinematics over 10 min of overground walking, averaged over all subjects
Joint angle | Overall correlation (r) | Average difference in correlation (r) between 1st and 10th minute |
|---|---|---|
Pelvic tilt | 0.60 (0.30) | 0.1 (0.1) |
Pelvic list | 0.65 (0.23) | 0.002 (0.1) |
Hip flexion | 0.84 (0.29) | − 0.002 (0.01) |
Hip adduction | 0.60 (0.27) | − 0.002 (0.06) |
Hip rotation | 0.71 (0.27) | − 0.03 (0.04) |
Knee flexion | 0.87 (0.32) | − 0.003 (0.04) |
Ankle plantarflexion | 0.70 (0.10) | − 0.1 (0.1) |