TABLE 4.
Mean absolute error (MAE) values calculated between joint moments found from inverse dynamics and either “Params” calibration or “Params + SynX + Res” calibration.
| Joint | Calibration case | Calibration | Validation | ||||||
|---|---|---|---|---|---|---|---|---|---|
| S1 | S2 | S1 | S2 | ||||||
| Left | Right | Left | Right | Left | Right | Left | Right | ||
| HipFE | Params | 7.14 | 6.82 | 5.75 | 6.14 | 6.68 | 6.37 | 5.92 | 6.30 |
| Params + SynX + Res | 6.17 | 5.72 | 5.46 | 5.91 | 6.00 | 6.63 | 5.65 | 5.26 | |
| HipAA | Params | 6.88 | 7.24 | 7.46 | 5.55 | 6.31 | 7.62 | 7.50 | 6.35 |
| Params + SynX + Res | 5.91 | 6.05 | 5.20 | 4.41 | 5.53 | 7.05 | 7.20 | 5.28 | |
| HipRot | Params | 5.97 | 5.71 | 2.62 | 2.00 | 5.25 | 6.17 | 3.40 | 1.88 |
| Params + SynX + Res | 4.79 | 4.25 | 2.40 | 1.96 | 4.25 | 5.69 | 3.27 | 2.12 | |
| KneeFE | Params | 6.01 | 4.06 | 5.03 | 4.81 | 5.88 | 4.82 | 5.56 | 4.35 |
| Params + SynX + Res | 6.54 | 4.40 | 5.77 | 5.15 | 6.69 | 5.08 | 5.52 | 5.35 | |
| AnklePD | Params | 7.77 | 6.04 | 5.42 | 4.98 | 7.78 | 6.10 | 5.53 | 5.29 |
| Params + SynX + Res | 8.11 | 6.30 | 5.60 | 5.26 | 7.08 | 6.27 | 6.37 | 5.33 | |
| AnkleIE | Params | 4.80 | 2.83 | 7.11 | 1.84 | 4.16 | 2.29 | 6.60 | 2.01 |
| Params + SynX + Res | 5.11 | 3.34 | 7.12 | 1.94 | 4.71 | 3.41 | 7.02 | 2.21 | |
The results for “Params + SynX + Res” were produced using the best methodological combinations for validation (speed-specific unmeasured synergy vector weights with 6 synergies). MAE values reported for “Params + SynX + Res” were derived when unmeasured synergy vectors weights and average values were fixed at their calibrated values.