Table 3.

Incongruity Performance Index (IPI) in the young group (YG), control group (CG) and patients for the unaffected and affected side (PG), for the upper and lower limbs, that compares to actual locomotion during the swing task (SW) and the dynamic motor imagery task (SW and dMIt, respectively). The row dMIt vs. SW report the p-values of the Wilcoxon test within subjects for each group, the last row reports the IPI between the time spent during the mental chronometry task (CT) and comfortable walking (CW), the last column reports the between-groups comparison performed by a Kruskal–Wallis analysis. In bold are the statistically significant p-values.

Parameter	Limbs	IPI		YG	CG	PG Unaffected	PG Affected	Between-Groups p:
Speed Amplitude	Upper Limbs	SW		−111 ± 26%	−340 ± 76%	−578 ± 98%	−494 ± 91%	<0.001
		dMIt		−16 ± 18%	−68 ± 24%	−298 ± 80%	−278 ± 59%	<0.001
		dMIt vs. SW	p	<0.001	<0.001	0.002	0.006	-
	Lower Limbs	SW		13 ± 12%	−9 ± 6%	−169 ± 75%	−28 ± 12%	<0.001
		dMIt		52 ± 6%	30 ± 6%	−42 ± 29%	−8 ± 12%	<0.001
		dMIt vs. SW	p	<0.001	<0.001	0.001	0.012	-
Frequency	Upper Limbs	SW		22 ± 1%	16 ± 3%	18 ± 8%	9 ± 10%	0.238
		dMIt		22 ± 1%	11 ± 2%	9 ± 9%	11 ± 9%	0.001
		dMIt vs. SW	p	0.901	0.056	0.020	0.910	-
	Lower Limbs	SW		23 ± 1%	14 ± 3%	20 ± 6%	20 ± 6%	0.112
		dMIt		28 ± 1%	18 ± 3%	29 ± 7%	27 ± 8%	0.014
		dMIt vs. SW	p	0.002	0.120	0.001	0.027	-
Waveform	Upper Limbs	SW		−4 ± 2%	−30 ± 12%	−49 ± 12%	−95 ± 36%	<0.001
		dMIt		−1 ± 3%	−10 ± 9%	−42 ± 12%	−56 ± 20%	<0.001
		dMIt vs. SW	p	0.012	<0.001	0.112	0.017	-
	Lower Limbs	SW		−29 ± 3%	−55 ± 7%	−97 ± 23%	−79 ± 14%	<0.001
		dMIt		−22 ± 3%	−44 ± 7%	−97 ± 24%	−76 ± 13%	<0.001
		dMIt vs. SW	p	0.014	0.028	0.776	0.910	-
Chronometry Task		dMIt		3 ± 5%	−2 ± 9%	2 ± 16%		0.941