Table 2.
Mean values ± 1SD of spatiotemporal stride parameters under each condition
| Parameter | Single task | Dual-task | ||||
|---|---|---|---|---|---|---|
| Walking only | Walking + texting | Walking + talking on a phone | ||||
| NWS | FWS | NWS | FWS | NWS | FWS | |
| Gait velocity (m/s) | 1.4 ± 0.2 | 1.7 ± 0.2 | 1.3 ± 0.2a | 1.5 ± 0.2a | 1.4 ± 0.2 | 1.6 ± 0.2 |
| Cadence (steps/min) | 115 ± 6.3 | 126 ± 7.7 | 112 ± 8.5a | 122 ± 9.1a | 114 ± 7.8 | 124 ± 8.9 |
| Stride length (m) | 1.47 ± 0.12 | 1.61 ± 0.11 | 1.36 ± 0.13a | 1.48 ± 0.12a | 1.41 ± 0.09b | 1.56 ± 0.10b |
| Double support time (% of gait cycle time) | 20.9 ± 2.6 | 17.9 ± 2.4 | 22.9 ± 4.6a | 20.6 ± 2.9a | 22.0 ± 3.5 | 19.2 ± 2.5 |
Significant demarcation based on pairwise comparisons of the three levels of task
NWS self-selected walking speed, FWS self-selected fast walking speed
aDenotes ‘walking + texting’ condition differs significantly from the walking only condition at that speed (P < 0.05)
bDenotes ‘walking + talking on a phone’ condition differs significantly from the walking only condition at that speed (P < 0.05)