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Lookup NU author(s): Dr Lisa AlcockORCiD, Dr Brook Galna, Professor Richard Perkins, Dr Susan Lord, Professor Lynn RochesterORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
AbstractReduced foot clearance when walking may increase the risk of trips and falls in people with Parkinson’s disease (PD). Changes in foot clearance in PD are likely to be associated with temporal-spatial characteristics of gait such as walking slowly which evokes alterations in the temporal-spatial control of stepping patterns. Enhancing our understanding of the temporal-spatial determinants of foot clearance may inform the design of falls prevention therapies. Thirty-six people with PD and 38 age-matched controls completed four intermittent walks under two conditions: self-selected and fast gait velocity. Temporal-spatial characteristics of gait and foot (heel and toe) clearance outcomes were obtained using an instrumented walkway and 3D motion capture, respectively. A general linear model was used to quantify the effect of PD and walking speed on gait and foot clearance. Regression evaluated the temporal and spatial gait predictors of minimum toe clearance (MTC).PD walked slower regardless of condition (p<.001) and tended to increase their step length to achieve a faster gait velocity. Step length and the walk ratio consistently explained the greatest proportion of variance in MTC (>28% and >33%, respectively) regardless of group or walking speed (p<.001). Our results suggest step length is the primary determinant of MTC regardless of pathology. Interventions that focus on increasing step length may help to reduce the risk of trips and falls during gait, however, clinical trials are required for robust evaluation.
Author(s): Alcock L, Galna B, Perkins R, Lord S, Rochester L
Publication type: Article
Publication status: Published
Journal: Journal of Biomechanics
Year: 2018
Volume: 71
Pages: 30-36
Print publication date: 11/04/2018
Online publication date: 13/12/2017
Acceptance date: 04/12/2017
Date deposited: 14/12/2017
ISSN (print): 0021-9290
ISSN (electronic): 1873-2380
Publisher: Elsevier
URL: https://doi.org/10.1016/j.jbiomech.2017.12.002
DOI: 10.1016/j.jbiomech.2017.12.002
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