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Symmetry matched auditory cues improve gait steadiness in most people with Parkinson's disease but not in healthy older people

Citation

Brodie, MAD and Dean, RT and Beijer, TR and Canning, CG and Smith, ST and Menant, JC and Lord, SR, Symmetry matched auditory cues improve gait steadiness in most people with Parkinson's disease but not in healthy older people, Journal of Parkinson's Disease, 5, (1) pp. 105-116. ISSN 1877-7171 (2015) [Refereed Article]

DOI: doi:10.3233/JPD-140430

Abstract

Background: Unsteady gait and falls are major problems for people with Parkinson's disease (PD). Symmetric auditory cues at altered cadences have been used to improve walking speed or step length. However, few people are exactly symmetric in terms of morphology or movement patterns and effects of symmetric cueing on gait steadiness are inconclusive.

Objectives: To investigate if matching auditory cue a/symmetry to an individual's intrinsic symmetry or asymmetry affects gait steadiness, gait symmetry, and comfort to cues, in people with PD, healthy age-matched controls (HAM) and young.

Methods: Thirty participants; 10 with PD, 11 HAM (66 years), and 9 young (30 years), completed five baseline walks (no cues) and twenty-five cued walks at habitual cadence but different a/symmetries. Outcomes included; gait steadiness (step time variability and smoothness by harmonic ratios), walking speed, symmetry, comfort, and cue lag times.

Results: Without cues, PD participants had slower and less steady gait than HAM or young. Gait symmetry was distinct from gait steadiness, and unaffected by cue symmetry or a diagnosis of PD, but associated with aging. All participants maintained preferred gait symmetry and lag times independent of cue symmetry. When cues were matched to the individual's habitual gait symmetry and cadence: Gait steadiness improved in the PD group, but deteriorated in the HAM controls, and was unchanged in the young. Gait outcomes worsened for the two PD participants who reported discomfort to cued walking and had high New Freezing of Gait scores.

Conclusions: It cannot be assumed all individuals benefit equally from auditory cues. Symmetry matched auditory cues compensated for unsteady gait in most people with PD, but interfered with gait steadiness in older people without basal ganglia deficits.

Item Details

Item Type:Refereed Article
Keywords:auditory cues, Parkinson's disease, asymmetry, gait steadiness, symmetry
Research Division:Medical and Health Sciences
Research Group:Neurosciences
Research Field:Neurology and Neuromuscular Diseases
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Nervous System and Disorders
Author:Smith, ST (Associate Professor Stuart Smith)
ID Code:105956
Year Published:2015
Web of Science® Times Cited:1
Deposited By:Health Sciences
Deposited On:2016-01-21
Last Modified:2016-11-09
Downloads:0

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