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Ageing and gait variability-a population-based study of older people


Callisaya, M and Blizzard, L and Schmidt, MD and McGinley, JL and Srikanth, VK, Ageing and gait variability-a population-based study of older people, Age and Ageing, 39, (2) pp. 191-197. ISSN 0002-0729 (2010) [Refereed Article]

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Copyright © 2010 Oxford University Press

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DOI: doi:10.1093/ageing/afp250


Background: gait variability may be an important predictor of falls risk, but its characteristics are poorly understood. Objective: to examine the relationship between age and gait variability in a population-based sample of older people. Design: cross-sectional study. Methods: in people aged 60–86 years (n=412), temporal and spatial gait variability measures were recorded with a GAITRite walkway. Regression analysis was used to model the relationship between age and gait variability adjusting for height, weight and self-reported chronic disease. Further adjustment was made for gait speed to examine its influence on the associations. Results: older age was associated with greater variability (P<0.05) in all gait measures. All relationships were linear, except that between age and step time variability, which was curvilinear in women. Adjusting for gait speed changed the magnitude of the age coefficient by 62–86% for temporal variability measures, 25% for step length variability and 5–12% for step width variability. Conclusion: age is linearly associated with greater intra-individual gait variability for most gait measures, except for step time variability in women. Gait speed may mediate the association between age and temporal variability measures. Further study is needed to understand the factors responsible for the greater gait variability with ageing.

Item Details

Item Type:Refereed Article
Keywords:ageing, gait variability, population-based, elderly
Research Division:Biomedical and Clinical Sciences
Research Group:Clinical sciences
Research Field:Geriatrics and gerontology
Objective Division:Health
Objective Group:Specific population health (excl. Indigenous health)
Objective Field:Health related to ageing
UTAS Author:Callisaya, M (Dr Michele Callisaya)
UTAS Author:Blizzard, L (Professor Leigh Blizzard)
UTAS Author:Srikanth, VK (Dr Velandai Srikanth)
ID Code:64955
Year Published:2010
Web of Science® Times Cited:179
Deposited By:Menzies Institute for Medical Research
Deposited On:2010-09-16
Last Modified:2011-08-30

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