In-home walking speeds and variability trajectories associated with mild cognitive impairment.

ABSTRACT:

Objective

To determine whether unobtrusive long-term in-home assessment of walking speed and its variability can distinguish those with mild cognitive impairment (MCI) from those with intact cognition.

Methods

Walking speed was assessed using passive infrared sensors fixed in series on the ceiling of the homes of elderly individuals participating in the Intelligent Systems for Assessing Aging Change (ISAAC) cohort study. Latent trajectory models were used to analyze weekly mean speed and walking speed variability (coefficient of variation [COV]).

Results

ISAAC participants living alone included 54 participants with intact cognition, 31 participants with nonamnestic MCI (naMCI), and 8 participants with amnestic MCI at baseline, with a mean follow-up of 2.6 ± 1.0 years.

SUBMITTER: Dodge HH 

PROVIDER: S-EPMC3369505 | biostudies-literature | 2012 Jun

REPOSITORIES: biostudies-literature