Table 1. Point-to-point accuracy of body worn sensors for estimation of 3D angles during fast, medium, and slow movements in all directions. |
| Motion |
Anterior-Posterior |
Medial-Lateral |
Internal-External |
| Abs*, [°] |
Re** [%] |
Abs*, [°] |
Re** [%] |
Abs*, [°] |
Re** [%] |
| Fast Speed Movements |
| Systematic |
-.37 |
-.50 |
-.26 |
-.53 |
.95 |
.57 |
| Random |
1.72 |
2.23 |
1.55 |
3.15 |
5.48 |
3.43 |
| RMSE† |
1.78 |
2.32 |
1.58 |
3.20 |
5.63 |
3.52 |
| Medium Speed Movement |
| Systematic |
-.30 |
-.38 |
-.03 |
-.08 |
-.22 |
-.15 |
| Random |
1.20 |
1.47 |
.89 |
2.09 |
3.59 |
2.49 |
| RMSE |
1.24 |
1.52 |
.91 |
2.14 |
3.61 |
2.50 |
| Slow Speed Movement |
| Systematic |
-.31 |
-.40 |
-.28 |
-.69 |
.19 |
.06 |
| Random |
.78 |
.99 |
.91 |
2.19 |
3.08 |
1.99 |
| RMSE |
.89 |
1.13 |
1.00 |
2.42 |
3.23 |
2.09 |
|
|