Quadriceps function, proprioceptive acuity and functional performance in healthy young, middle-aged and elderly subjects

Hurley, Michael V., Rees, Joanne and Newham, Di J. (1998) Quadriceps function, proprioceptive acuity and functional performance in healthy young, middle-aged and elderly subjects. Age and Ageing, 27(1), pp. 55-62. ISSN (print) 0002-0729

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Abstract

BACKGROUND: Muscle functions to generate force-producing movement and also has a role in proprioception. If ageing compromises these sensorimotor functions of muscle, the ability of older subjects to detect and correct postural sway may be impeded, resulting in impairment of functional performance. METHOD: To see if age-related changes occurred and, if so, what their effects might be. Quadriceps strength, proprioception, postural stability and functional performance were assessed in young (n = 20, mean age 23 years), middle-aged (n = 10, mean age 56 years) and elderly (n = 15, mean age 72 years) subjects. RESULTS: With increasing age there were decreases in quadriceps strength (r = -0.511; P < 0.001), acuity of joint position sense (r = -0.603; P < 0.001) and postural stability (ANOVA < 0.002) during stance conditions which placed a greater reliance on muscle proprioceptors. These changes may decrease postural stability confidence, resulting in impaired performance of common activities of daily living (r = 0.635; P < 0.001). CONCLUSIONS: The age-related deterioration in sensorimotor function of muscle may contribute to the increased fear and frequency of falls in elderly subjects, thereby decreasing independence.

Item Type: Article
Research Area: Allied health professions and studies
Health services research
Faculty, School or Research Centre: Faculty of Health and Social Care Sciences (until 2013)
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Depositing User: Katrina Clifford
Date Deposited: 18 Nov 2010 09:00
Last Modified: 18 Nov 2010 09:00
URI: http://eprints.kingston.ac.uk/id/eprint/17339

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