Dynamic Parameters of Balance Which Correlate to Elderly Persons with a History of Falls

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Dynamic Parameters of Balance Which Correlate to Elderly Persons with a History of Falls

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Title: Dynamic Parameters of Balance Which Correlate to Elderly Persons with a History of Falls
Author: Muir, Jesse W.; Kiel, Douglas P.; Hannan, Marian; Magaziner, Jay; Rubin, Clinton T.

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Citation: Muir, Jesse W., Douglas P. Kiel, Marian Hannan, Jay Magaziner, and Clinton T. Rubin. 2013. “Dynamic Parameters of Balance Which Correlate to Elderly Persons with a History of Falls.” PLoS ONE 8 (8): e70566. doi:10.1371/journal.pone.0070566. http://dx.doi.org/10.1371/journal.pone.0070566.
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Abstract: Poor balance in older persons contributes to a rise in fall risk and serious injury, yet no consensus has developed on which measures of postural sway can identify those at greatest risk of falling. Postural sway was measured in 161 elderly individuals (81.8y±7.4), 24 of which had at least one self-reported fall in the prior six months, and compared to sway measured in 37 young adults (34.9y±7.1). Center of pressure (COP) was measured during 4 minutes of quiet stance with eyes opened. In the elderly with fall history, all measures but one were worse than those taken from young adults (e.g., maximal COP velocity was 2.7× greater in fallers than young adults; p<0.05), while three measures of balance were significantly worse in fallers as compared to older persons with no recent fall history (COP Displacement, Short Term Diffusion Coefficient, and Critical Displacement). Variance of elderly subjects' COP measures from the young adult cohort were weighted to establish a balance score (“B-score”) algorithm designed to distinguish subjects with a fall history from those more sure on their feet. Relative to a young adult B-score of zero, elderly “non-fallers” had a B-score of 0.334, compared to 0.645 for those with a fall history (p<0.001). A weighted amalgam of postural sway elements may identify individuals at greatest risk of falling, allowing interventions to target those with greatest need of attention.
Published Version: doi:10.1371/journal.pone.0070566
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3734288/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:11855720
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