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Table 2 Effect of dual tasking on gait variables.

From: Gait stability and variability measures show effects of impaired cognition and dual tasking in frail people

Variables

Walking

Dual Tasking

z- value

p

speed (m/sec)

0.92 ± 0.24

0.80 ± 0.21

4.31

< 0.001

stride frequency (strides/sec)

0.82 ± 0.11

0.77 ± 0.11

3.95

< 0.001

mean stride time (sec)

1.23 ± 0.18

1.33 ± 0.17

3.87

< 0.001

CV stride time (%)

3.61 ± 2.30

4.41 ± 2.34

2.83

0.005

PVI (%)

15.08 ± 7.60

17.68 ± 8.49

3.54

< 0.001

α stride times

0.85 ± 0.14

0.77 ± 0.15

2.48

0.013

  1. Values during walking and dual tasking for: walking speed, stride frequency, mean and coefficient of variation (CV) of stride times, the phase variability index (PVI) and stride-to-stride variability (α). Values are mean ± standard deviations. Statistical differences between conditions are indicated by z- and p-values (based on Wilcoxon signed rank test).