Table 2 PLS-DA model details during single- and dual-task walking for the three groupsa
Gait outcome | Variance captured per LV (%) | VIP-values | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Single-task | Dual-task | ||||||||||
LV1 | LV2 | LV3 | LV4 | Total | HO | CI | CIM | HO | CI | CIM | |
Gait speed | 78 | 5 | 1 | 3 | 86 | 1.4 | 0.5 | 1.3 | 1.7 | 1.2 | 1.5 |
RMS AP | 58 | 4 | 0 | 0 | 62 | 1.0 | 0.7 | 0.8 | 1.1 | 1.2 | 0.9 |
RMS ML | 47 | 1 | 12 | 3 | 62 | 1.3 | 0.5 | 1.2 | 1.3 | 0.9 | 1.1 |
RMS V | 76 | 0 | 3 | 2 | 81 | 2.0 | 1.2 | 1.9 | 2.2 | 1.6 | 1.8 |
IH AP | 53 | 1 | 3 | 1 | 58 | 1.3 | 0.9 | 1.5 | 1.1 | 0.8 | 0.9 |
IH ML | 0 | 0 | 24 | 8 | 33 | 0.2 | 0.4 | 0.5 | 0.1 | 0.0 | 0.2 |
IH V | 3 | 11 | 11 | 13 | 37 | 0.3 | 1.7 | 0.2 | 0.2 | 0.1 | 0.1 |
Cross-SampEn AP-ML | 42 | 19 | 0 | 6 | 68 | 0.8 | 1.2 | 0.7 | 1.0 | 1.4 | 0.8 |
Cross-SampEn AP-V | 34 | 3 | 15 | 20 | 72 | 0.8 | 0.3 | 0.7 | 1.1 | 0.7 | 1.0 |
Cross-SampEn ML-V | 30 | 4 | 8 | 19 | 61 | 0.7 | 0.9 | 0.9 | 1.2 | 0.8 | 1.1 |
Step Regularity AP | 57 | 2 | 8 | 5 | 72 | 1.0 | 0.5 | 0.9 | 1.1 | 0.7 | 0.9 |
Step Regularity V | 77 | 0 | 4 | 0 | 82 | 1.4 | 0.3 | 1. 3 | 1.3 | 1.0 | 1.0 |
Stride Regularity AP | 73 | 0 | 9 | 3 | 85 | 1.4 | 0.5 | 1.3 | 1.3 | 0.9 | 1.0 |
Stride Regularity V | 82 | 0 | 10 | 1 | 93 | 1.5 | 0.3 | 1.3 | 1.5 | 1.1 | 1.1 |
Symmetry AP | 30 | 2 | 11 | 4 | 47 | 0.5 | 0.8 | 0.7 | 0.5 | 0.3 | 0.6 |
Symmetry V | 44 | 3 | 24 | 0 | 71 | 0.9 | 0.9 | 1.4 | 0.9 | 0.6 | 0.8 |
Mscale-En AP | 19 | 1 | 26 | 5 | 51 | 0.3 | 0.2 | 0.7 | 1.8 | 0.6 | 3.6 |
Mscale-En ML | 0 | 47 | 0 | 5 | 51 | 0.7 | 3.2 | 0.3 | 0.4 | 0.6 | 0.5 |
Mscale-En V | 18 | 20 | 16 | 0 | 53 | 1.2 | 3.5 | 1.0 | 1.0 | 2.4 | 1.4 |
max-Lyap AP | 23 | 0 | 8 | 14 | 45 | 0.7 | 0.4 | 0.8 | 1.4 | 1.0 | 1.1 |
max-Lyap ML | 20 | 20 | 24 | 2 | 66 | 1.5 | 2.3 | 1.4 | 0.5 | 0.3 | 0.6 |
max-Lyap V | 53 | 4 | 5 | 2 | 64 | 1.3 | 1.1 | 1.4 | 0.3 | 3.5 | 0.8 |
FreqVar AP | 35 | 3 | 0 | 3 | 41 | 1.0 | 0.7 | 0.8 | 0.3 | 1.2 | 0,4 |