Age-Related Differences in Stepping Response When Stepping onto a Known Soft Surface under Dual Task Conditions

Table 2

Stepping response parameters compared between ages (mean ± SD).

			Step length (cm)	Step velocity (cm/sec)	Initiation time (sec)	Preparation time (sec)
Flat surface	young	Single	49.99±1.59	53.12±2.48	0.18±0.02	0.26±0.03
		Dual	51.02±1.98	47.10±3.71	0.19±0.03	0.27±0.04
	older	Single	44.21±4.31^∗∗	41.05±6.52^∗∗	0.21±0.06	0.29±0.06
		Dual	44.61±5.48^∗∗	38.13±6.75^∗∗	0.22±0.04	0.31±0.04
Soft surface	young	Single	51.14±1.37	54.55±1.24	0.17±0.02	0.25±0.04
		Dual	51.23±2.19	47.40±3.82	0.18±0.02	0.28±0.05
	older	Single	43.62±2.74^∗∗	41.92±4.33^∗∗	0.20±0.03^∗∗	0.27±0.05
		Dual	43.35±5.03^∗∗	36.38±7.30^∗∗	0.24±0.03^∗∗	0.30±0.06

aSignificant difference from the young adults (^∗∗𝑃<.01).