| A population-based study of sensorimotor factors affecting gait in older people. | |
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MedLine Citation:
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PMID: 19264860 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: the study of factors associated with age-related gait decline may assist in developing methods to preserve mobility in older people. OBJECTIVE: to examine the associations between sensorimotor factors relevant to ageing and gait in the general older population. DESIGN: cross-sectional population-based study. METHODS: participants aged 60-86 years (n = 278) were randomly selected using electoral roll sampling. Sensorimotor factors (quadriceps strength, reaction time, postural sway, proprioception and visual contrast sensitivity) were measured using the Physiological Profile Assessment. Gait variables (speed, cadence, step length, double support phase and step width) were recorded with a GAITRite walkway. Linear regression was used to model relationships between sensorimotor and gait variables. RESULTS: mean age of participants was 72.4 (7.0) years with 154 (55%) males. Better quadriceps strength, reaction time and postural sway (in men) predicted faster gait speed due to their effects on step length and/or cadence. Body weight (in men) and visual contrast sensitivity (in women) were modifying factors in these relationships. Better postural sway, reaction time (in men) and quadriceps strength (in women) predicted reduced double support phase. Modifying factors were quadriceps strength (in men) and proprioception (in women). Postural sway was the sole predictor of step width and in women only. CONCLUSION: potentially modifiable sensorimotor factors were associated with a range of gait measures, with a different pattern of individual associations and interactions seen between the sexes. These results provide further mechanistic insights towards explaining age-related gait decline in the general older population. |
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Authors:
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Michele L Callisaya; Leigh Blizzard; Michael D Schmidt; Jennifer L McGinley; Stephen R Lord; Velandai K Srikanth |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-03-05 |
Journal Detail:
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Title: Age and ageing Volume: 38 ISSN: 1468-2834 ISO Abbreviation: Age Ageing Publication Date: 2009 May |
Date Detail:
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Created Date: 2009-04-20 Completed Date: 2009-05-28 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0375655 Medline TA: Age Ageing Country: England |
Other Details:
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Languages: eng Pagination: 290-5 Citation Subset: IM |
Affiliation:
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Menzies Research Institute, Private Bag 23, Hobart, Tasmania 7001, Australia. michelec@utas.edu.au |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Age Factors Aged Aged, 80 and over Aging* Contrast Sensitivity Cross-Sectional Studies Female Gait* Gait Disorders, Neurologic / etiology, physiopathology* Humans Male Middle Aged Muscle Strength Population Surveillance Postural Balance Proprioception Quadriceps Muscle / physiopathology Reaction Time Risk Assessment Risk Factors Sex Factors Tasmania |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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