Table 5.

Dual task costs (in %) in cognitively impaired (MoCA < 26, n = 21) and unimpaired (MoCA ≥ 26, n = 21) Parkinson’s disease patients. Means were compared using one way ANOVA and Mann–Whitney U-test.

Gait parameter	MoCA < 26		MoCA ≥ 26		F (1,40); Z valuea	p	η2	αC
	Mean (%)	SD	Mean (%)	SD
Stride time normalized	27.3	24.8	40.4	25.4	2.845	0.099	0.066	0.012
Stride time CV	56.6	75.0	93.7	116.0	−1.031a	0.302	0.025	0.027
Swing time	−2.4	1.8	−2.9	3.2	−1.069a	0.285	0.027	0.023
Swing time CV	56.6	78.0	74.1	103.1	−0.075a	0.940	0.000	0.050
Stance time	1.4	1.0	1.6	1.7	−1.270a	0.204	0.038	0.019
Stance time CV	52.5	87.6	84.0	107.9	−0.641a	0.521	0.010	0.038
Stride length normalized	−7.5	5.3	−7.1	6.3	0.036	0.851	0.001	0.046
Stride length CV	11.6	49.9	30.6	96.2	−0.767a	0.443	0.014	0.035
HS angle	−13.0	14.5	−1.4	29.5	2.601	0.115	0.061	0.015
TO angle	−5.5	3.8	−6.4	2.6	0.742	0.394	0.018	0.031
max TC normalized	−11.9	8.8	−5.2	12.2	4.270	0.045	0.096	0.004
Cadence normalized	−8.4	5.6	−9.5	6.9	−0.340a	0.734	0.003	0.042
Gait velocity normalized	−24.1	15.0	−32.2	11.2	3.762	0.060	0.086	0.008

HS, heel strike; TO, toe off; max TC, maximum toe clearance; CV, coefficient of variance; SD, standard deviation.

Significance level was adapted by Benjamini–Hochberg correction for multiple comparisons (α_C). Bold numbers indicate significance.

^aMann–Whitney U-test.