Combining transcranial direct current stimulation with a motor-cognitive task: the impact on dual-task walking costs in older adults

Table 3 The effects of tDCS condition on the dual-task cost to gait measures

Cost reduction tDCS + seated	Gait measure	Cost reduction tDCS + walking	Cost reduction sham + walking	RM ANOVA P-value	F_(2,48)	P-value (tDCS + seated vs. tDCS + walking)	P-value (sham + walking vs. tDCS + walking)
− 0.2 ± 6.0%	Stride time	3.2 ± 3.9%	− 0.7 ± 2.7%	0.005	6.010	0.008*	0.002*
− 0.6 ± 8.5%	Double support time	5.2 ± 10.4%	− 0.2 ± 6.3%	0.03	3.768	0.03	0.04
− 2.8 ± 12.0%	Step regularity	7.3 ± 11.9%	2.3 ± 9.1%	0.015	4.579	0.019*	0.024*
38.6 ± 35.5%	Stride time variability	143.9 ± 57.8%	− 60.2 ± 40.2%	0.013	4.765	0.155	0.019*
6.0 ± 106.8%	Swing time variability	58.9 ± 104.1%	− 38.5 ± 115.6%	0.012	4.812	0.131	0.013*

In this analysis, higher values reflect a larger and better cost reduction
Bolded p-values values indicate significant differences across conditions
Post hoc analysis revealed between which conditions the cost reduction differed statistically significantly. *Values that are lower than the alpha levels after the Bonferroni correction

ISSN: 1743-0003