Gait stability and variability measures show effects of impaired cognition and dual tasking in frail people

Table 4 Association between cognitive function and gait variables during dual tasking

		speed	mean ST	PVI	CV stride times	α strides	RMS anterior-posterior	LSE anterior-posterior	Peak acc. m
Cognitive impaired	MMSE	0.70**	-0.72**	-0.68**	-0.68**	0.32	-0.56*	-0.74**	0.62*
	SMS	-0.66**	0.57*	0.67**	0.37	-0.56*	0.50*	0.43	-0.63*
Cognitive intact	MMSE	0.08	-0.36	0.14	-0.14	-0.17	-0.26	0.61*	-0.19
	SMS	0.10	0.29	-0.28	0.36	-0.28	0.38	0.19	-0.30

**P < 0.01; * P < 0.05; Spearman correlations
Correlations between the mini mental state examination (MMSE) scores, the Seven Minute Screening (SMS) test scores and walking speed, mean, coefficient of variation (CV), phase variability index (PVI) and long range correlations of stride times , the root means square (RMS) and local stability exponent (LSE) of anterior-posterior accelerations and the medio-lateral peak acceleration.

ISSN: 1743-0003