Table 2.
Univariate means (SD) of each outcome stratified by group and condition.
| Single task |
Dual task |
|||
|---|---|---|---|---|
| Mean | SD | Mean | SD | |
| Gait speed (m/s) | ||||
| Control | 1.12 | 0.14 | 0.95 | 0.17 |
| PD | 0.93 | 0.20 | 0.78 | 0.19 |
| Stride length (m) | ||||
| Control | 1.19 | 0.08 | 1.11 | 0.10 |
| PD | 0.99 | 0.19 | 0.89 | 0.19 |
| Stride time (s) | ||||
| Control | 1.04 | 0.13 | 1.07 | 0.15 |
| PD | 1.07 | 0.16 | 1.09 | 0.15 |
| Time in double support (%) | ||||
| Control | 22.5 | 3.9 | 24.6 | 3.9 |
| PD | 23.9 | 4.8 | 26.7 | 6.2 |
| Time in early swing (%) | ||||
| Control | 51.2 | 4.8 | 48.1 | 5.4 |
| PD | 49.2 | 5.6 | 46.4 | 6.4 |
| Time in late swing (%) | ||||
| Control | 26.5 | 3.3 | 27.4 | 3.3 |
| PD | 27.0 | 3.3 | 27.0 | 3.7 |
| Total cognitive responses (n)a | ||||
| Control | 36 | 7 | 35 | 8 |
| PD | 32 | 10 | 29 | 8 |
| Correct cognitive responses (n)a | ||||
| Control | 34 | 8 | 31 | 8 |
| PD | 29 | 11 | 26 | 9 |
| Cognitive task accuracy (%)a | ||||
| Control | 93 | 9 | 89 | 10 |
| PD | 90 | 11 | 88 | 11 |
| λHC | ||||
| Control | 0.15 | 0.04 | 0.13 | 0.04 |
| PD | 0.13 | 0.04 | 0.12 | 0.04 |
| λTO | ||||
| Control | 0.07 | 0.02 | 0.08 | 0.02 |
| PD | 0.08 | 0.02 | 0.08 | 0.02 |
| λMS | ||||
| Control | 0.11 | 0.02 | 0.11 | 0.02 |
| PD | 0.12 | 0.02 | 0.11 | 0.02 |
| λKantz | ||||
| Control | 0.30 | 0.07 | 0.34 | 0.08 |
| PD | 0.35 | 0.07 | 0.37 | 0.09 |
aST condition for cognitive responses refers to the seated condition.
PD, Parkinson’s disease.