Table 5. 3D joint angles range of motion and errors.
| Reference | Wearable | Error | ||||||
|---|---|---|---|---|---|---|---|---|
| Min. | Max. | Min. | Max. | Accuracy | Precision | Correlation | ||
| Left Knee | Flexion, deg | 36.3 (5.6) | 74.7 (8.4) | 33.9 (6.5) | 77.1(12.2) | -0.1 (7.4) | 3.4 (1.4) | 0.955 (0.043) |
| Abduction, deg | -11.6 (4.1) | 2.3 (2.9) | -11.5 (6.3) | 11.9 (4.9) | 4.2 (5.5) | 3.6 (0.9) | 0.919 (0.094) | |
| Rotation, deg | -9.4 (3.7) | 10.2 (3.4) | -11.4 (4.4) | 11.2 (4.8) | 0.0 (4.4) | 3.8 (1.2) | 0.781 (0.172) | |
| Left Hip | Flexion, deg | -67.2 (11.0) | -24.8 (7.9) | -82.7 (10.5) | -32.6 (8.8) | -10.7 (4.3) | 3.6 (1.3) | 0.974 (0.016) |
| Abduction, deg | -10.5 (5.6) | 16.5 (6.2) | -14.7 (5.7) | 14.0 (7.6) | -3.3 (4.1) | 3.1 (1.4) | 0.896 (0.135) | |
| Rotation, deg | -30.5 (5.9) | 23.6 (5.7) | -24.0 (5.4) | 21.1 (7.0) | 0.5 (4.8) | 4.9 (1.5) | 0.977 (0.013) | |
| Trunk | Flexion, deg | 3.7 (5.6) | 16.6 (5.6) | 5.8 (5.5) | 16.6 (4.9) | 1.1 (6.4) | 2.2 (0.9) | 0.711 (0.208) |
| Abduction, deg | -6.3 (3.2) | 6.3 (3.8) | -8.7 (3.7) | 8.5 (3.6) | 0.1 (3.6) | 2.6 (0.9) | 0.790 (0.199) | |
| Rotation, deg | -6.7 (4.4) | 7.0 (3.5) | -10.2 (7.0) | 9.4 (4.0) | -0.6 (2.5) | 3.6 (1.5) | 0.669 (0.309) | |
Reference and wearable minimum and maximum angles and accuracy (error mean), precision (error standard deviation), and correlation. Values are given as mean (standard deviation) of all trials.