Table 2. Effects of dual task performance, instructed focus, and task difficulty on secondary spatiotemporal measures.

	Usual-base walking			Narrow-base walking
	Single task	Dual task		Single task	Dual task
		Walking focus	Cognitive focus		Walking focus	Cognitive focus
Stride length (m)	1.68 (0.15)	1.68 (0.15)	1.63 (0.15)	1.64 (0.17)	1.61 (0.15)	1.61 (0.16)
Cadence (steps/min)	134 (15)	135 (16)	132 (16)	129 (17)	130 (18)	130 (18)
Step width (cm)	14 (2)	14 (2)	14 (2)	7 (2)	7 (2)	8 (2)
Step width variability (%)	14.6 (4.7)	15.7 (6.0)	13.3 (4.5)	23.0 (8.3)	23.7 (9.5)	21.8 (9.4)
Stride time variability (%)	3.8 (2.7)	2.1 (0.7)	2.0 (0.5)	3.6 (1.6)	2.5 (1.2)	2.2 (0.6)

Values represent the mean (standard deviation)