Table 4.
Regression coefficients and VIP scores of the PLS regression analysis
| Regression coefficient | VIP score | |
|---|---|---|
| Spatiotemporal step parameters | ||
| Stride time | −0.19 | 2.19* |
| Stride length | −0.18 | 1.93* |
| Step length asymmetry | −0.17 | 1.74* |
| Step width | −0.06 | 0.22 |
| Step width variability | 0.03 | 0.07 |
| Muscle activation parameters | ||
| RMS 1 | −0.03 | 0.01 |
| RMS 2 | 0.18 | 1.99* |
| RMS 3 | 0.20 | 2.51* |
| Variance of relative phase | 0.09 | 0.51 |
| CAI GM_TA paretic | −0.09 | 0.47 |
| CAI GM_TA nonpar | 0.05 | 0.14 |
| CAI TA_PL nonpar | 0.05 | 0.18 |
Model was built on difference scores (HOLD - NORM). Variables with a VIP score >1.0, indicating importance for the model, are marked with an asterisk. A negative regression coefficient indicates that an increase in the parameter is associated with a decrease in energy cost and vice versa