Table 2.

Gait performance and hemodynamics changes in the prefrontal cortex between normal walking and cognitive dual-task conditions.

Outcomes	Single Motor Task	Cog-DT	p-Value 1
Gait speed (m/s)	1.05 (0.94–1.18)	0.95 (0.90–1.10)	0.006 *
[oxy-Hb] (μ mol/L)	0.18 (−0.41–0.73)	0.30 (−0.57–0.73)	0.501
[deoxy-Hb] (μ mol/L)	−1.09 (−1.27–(−0.31))	−1.41 (−2.02–(−0.79))	0.039 *
Hb-diff (μ mol/L)	0.92 (0.22–1.59)	1.27 (0.54–2.80)	0.039 *

[oxy-Hb], oxyhemoglobin concentration; [deoxy-Hb], deoxyhemoglobin concentration; Hb-diff, difference between oxy and deoxyhemoglobin concentrations; cog-DT, cognitive dual-task. * p < 0.05: Comparison between single motor task and cognitive dual-task (¹ Wilcoxon signed-rank test).