Table 7.
Number of times signal features were used across the eight training models stratified per body location
| Wrist (R) | Wrist (L) | Ankle (R) | Ankle (L) | Hip (R) | Hip (L) | Lower Back | Upper Arm | Upper Leg | |
|---|---|---|---|---|---|---|---|---|---|
| MEAN_BFEN | 8 | 8 | 1 | 2 | 6 | 8 | 7 | 8 | 1 |
| SD_BFEN | 3 | 5 | 0 | 0 | 3 | 3 | 4 | 5 | 4 |
| MEAN_ENMO | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| SD_ENMO | 5 | 6 | 0 | 0 | 0 | 0 | 0 | 5 | 0 |
| SDx | 1 | 6 | 0 | 0 | 4 | 8 | 4 | 3 | 0 |
| SDy | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 0 |
| ex | 0 | 0 | 5 | 4 | 2 | 2 | 0 | 0 | 3 |
| ey | 1 | 0 | 5 | 5 | 8 | 8 | 8 | 8 | 8 |
| ez | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
| tpx | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 6 | 5 |
| tpy | 8 | 8 | 0 | 0 | 0 | 0 | 4 | 4 | 0 |
| tpz | 8 | 2 | 0 | 0 | 3 | 0 | 2 | 2 | 0 |
| tpsvm | 6 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| px1 | 0 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 0 |
| py1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| pz1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| psvm1 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 0 |
| px2 | 0 | 0 | 6 | 4 | 1 | 0 | 4 | 0 | 6 |
| py2 | 0 | 0 | 6 | 6 | 5 | 1 | 0 | 1 | 8 |
| pz2 | 0 | 1 | 6 | 7 | 1 | 5 | 4 | 0 | 5 |
| psvm2 | 0 | 2 | 6 | 6 | 7 | 5 | 2 | 1 | 8 |
R, right; L, left. Signal features that are not listed were not used for any training model.