Table 2.

ANOVA table showing F and p-values for speed, task, and speed × task interaction.

	Speed (df = 3)		Task (df = 1)		Speed × task		Post hoc test
	F-value	p-value	F-value	p-value	F-value	p-value	By speed p <0.05	By task p <0.05
Step length	499.08	<0.001	1.74	0.20	0.90	0.46	All but 0.8 from 1.2	–
Step width	6.93	0.003	22.62	<0.001	0.53	0.67	0.4 from 1.2, 1.6	ALL
Step length variability	3.18	0.051	1.85	0.19	0.81	0.50	–	–
Step width variability	2.65	0.08	1.16	0.30	0.39	0.76	–	–

By speed, all but one crosswise comparison (0.8 and 1.2 m/s) of step length values were significantly different from each other (ANOVA, F = 499.08, p < 0.001; Bonferroni, p < 0.05), and step width values were significantly different between 0.4 and 1.2 and 0.4 and 1.6 m/s (ANOVA, F = 6.93, p = 0.003; Bonferroni, p < 0.05). By task, step width was significantly greater with the cognitive task than without the cognitive task at all speeds (ANOVA, F = 22.62, p < 0.001; Bonferroni, p < 0.05).