TABLE 1.
Mean RMSE between the IMU‐ and MOCAP‐based lateral flexion, axial rotation, and flexion/extension angles for the dynamic sports motion, anatomical trunk motion, lateral flexion, axial rotation, and flexion/extension trials and for all trials (n = 196). Standard deviation (S.D.) and 95% confidence interval (95% CI) are also reported.
| Trial type | RMSE for each trunk angle [deg] | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lateral flexion | Axial rotation | Flexion/extension | |||||||
| Mean | S.D. | 95% CI | Mean | S.D. | 95% CI | Mean | S.D. | 95% CI | |
| Dynamic sports motions | 3.7 | 1.5 | 3.4‐4.0 | 4.9 | 3.1 | 4.1‐5.6 | 3.0 | 1.3 | 2.7‐3.3 |
| Anatomical trunk motions | 2.6 | 1.0 | 2.3‐2.8 | 4.5 | 2.0 | 4.0‐4.9 | 3.0 | 1.5 | 2.8‐3.3 |
| Lateral flexion | 2.5 | 0.7 | 2.1‐2.9 | 5.3 | 2.5 | 4.5‐6.0 | 4.5 | 1.4 | 4.0‐4.9 |
| Axial rotation | 2.5 | 0.7 | 2.1‐2.9 | 4.2 | 1.7 | 3.4‐5.0 | 1.9 | 0.6 | 1.5‐2.4 |
| Flexion/extension | 2.7 | 1.4 | 2.3‐3.1 | 3.9 | 1.3 | 3.1‐4.7 | 2.6 | 0.9 | 2.2‐3.1 |
| All trials | 3.0 | 1.3 | 2.8‐3.2 | 4.6 | 2.4 | 4.3‐4.9 | 3.0 | 1.4 | 2.8‐3.2 |