Cognitive function, gait, and gait variability in older people: a population-based study

Martin, Kara L, Blizzard, Leigh, Wood, Amanda G, Srikanth, Velandai, Thomson, Russell, Sanders, Lauren M and Callisaya, Michele L 2013, Cognitive function, gait, and gait variability in older people: a population-based study, Journals of gerontology: series A, vol. 68, no. 6, pp. 726-732, doi: 10.1093/gerona/gls224.

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Title Cognitive function, gait, and gait variability in older people: a population-based study
Author(s) Martin, Kara L
Blizzard, Leigh
Wood, Amanda GORCID iD for Wood, Amanda G
Srikanth, Velandai
Thomson, Russell
Sanders, Lauren M
Callisaya, Michele L
Journal name Journals of gerontology: series A
Volume number 68
Issue number 6
Start page 726
End page 732
Total pages 7
Publisher Oxford University Press
Place of publication Oxford, Eng.
Publication date 2013-06
ISSN 1079-5006
Keyword(s) Gait
Gait variability
Cognitive function
Science & Technology
Life Sciences & Biomedicine
Geriatrics & Gerontology
Summary Background.Gait impairments are associated with falls and loss of independence. The study of factors associated with poorer gait may assist in developing methods to preserve mobility in older people. The aim of this study was to examine the associations between a range of cognitive functions and gait and gait variability in a population-based sample of older people.Methods.Gait and intra-individual gait variability measures were obtained using the GAITRite walkway in a sample of older people, aged 60-85 years (N = 422), randomly selected from the Tasmanian electoral roll. Raw scores from a cognitive battery were subjected to principal component analyses deriving four summary domains: executive function/attention, processing speed, memory, and visuospatial ability. Multivariable linear regression was used to examine associations between cognitive domains and gait measures adjusting for age, sex, ambulatory activity, medication use, and mood.Results.The mean age of the sample was 72.0 years (SD = 7.0), with 238 men (56%). Poorer executive function was independently associated with poorer performance in most absolute gait measures and with greater variability in double support phase and step time. Processing speed was associated with absolute gait measures and double support phase variability. Visuospatial ability was only associated with greater double support phase variability, independently of executive function and processing speed. Memory was not independently associated with any gait measure.Conclusions.In community-dwelling older people, executive function/attention and processing speed were associated with many aspects of gait, whereas visuospatial ability may only play a role in double support phase variability.
Language eng
DOI 10.1093/gerona/gls224
Indigenous content off
Field of Research 1103 Clinical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, The Author
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Document type: Journal Article
Collections: Faculty of Health
School of Psychology
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