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Increased double support variability in elderly female fallers with vestibular asymmetry.

Larsson, Johan; Ekvall-Hansson, Eva LU and Miller, Michael LU (2015) In Gait & Posture 41(3). p.820-824
Abstract
There is a broad consensus on the coupling of deteriorating gait and vestibular asymmetry, which has proved predictive of falls in the elderly. To date, research on this coupling remains inconclusive and has not focused specifically on fallers. In the present study, differences in gait variability were examined in a population of elderly females with fall-related wrist fractures, divided into samples with positive (N=28, 73±9 years) and negative head-shaking tests (N=6, 67±9 years). Swing, stance, and double support time variability were measured in preferred speed walking using GAITRite(®) and statistically evaluated in multivariate analysis of covariance with age as covariate. Results showed overall greater gait variability for the... (More)
There is a broad consensus on the coupling of deteriorating gait and vestibular asymmetry, which has proved predictive of falls in the elderly. To date, research on this coupling remains inconclusive and has not focused specifically on fallers. In the present study, differences in gait variability were examined in a population of elderly females with fall-related wrist fractures, divided into samples with positive (N=28, 73±9 years) and negative head-shaking tests (N=6, 67±9 years). Swing, stance, and double support time variability were measured in preferred speed walking using GAITRite(®) and statistically evaluated in multivariate analysis of covariance with age as covariate. Results showed overall greater gait variability for the positive nystagmus group (p=0.03) despite non-significant adjustment of the covariate (p=0.18). In post-hoc analysis, the effect on variability in double support time emerged as a significant and large contributor to this difference (p=0.009, ηp(2)=0.20). Conversely, the ability of swing and stance time variability to discriminate between groups was both non-significant and small (p=0.25, ηp(2)=0.04 and p=0.34, ηp(2)=0.03 respectively). We believe that the increased variability might stem from a strategic use of double support to re-stabilize from balance perturbations during gait. To some extent, these results diverge from previous findings and need to be reassessed in future studies. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Gait & Posture
volume
41
issue
3
pages
820 - 824
publisher
Elsevier
external identifiers
  • pmid:25800649
  • wos:000353209200014
  • scopus:84927974454
ISSN
1879-2219
DOI
10.1016/j.gaitpost.2015.02.019
language
English
LU publication?
yes
id
58914306-6165-430a-b2de-fe92328b5930 (old id 5257830)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/25800649?dopt=Abstract
date added to LUP
2015-04-05 13:39:44
date last changed
2017-01-01 03:45:17
@article{58914306-6165-430a-b2de-fe92328b5930,
  abstract     = {There is a broad consensus on the coupling of deteriorating gait and vestibular asymmetry, which has proved predictive of falls in the elderly. To date, research on this coupling remains inconclusive and has not focused specifically on fallers. In the present study, differences in gait variability were examined in a population of elderly females with fall-related wrist fractures, divided into samples with positive (N=28, 73±9 years) and negative head-shaking tests (N=6, 67±9 years). Swing, stance, and double support time variability were measured in preferred speed walking using GAITRite(®) and statistically evaluated in multivariate analysis of covariance with age as covariate. Results showed overall greater gait variability for the positive nystagmus group (p=0.03) despite non-significant adjustment of the covariate (p=0.18). In post-hoc analysis, the effect on variability in double support time emerged as a significant and large contributor to this difference (p=0.009, ηp(2)=0.20). Conversely, the ability of swing and stance time variability to discriminate between groups was both non-significant and small (p=0.25, ηp(2)=0.04 and p=0.34, ηp(2)=0.03 respectively). We believe that the increased variability might stem from a strategic use of double support to re-stabilize from balance perturbations during gait. To some extent, these results diverge from previous findings and need to be reassessed in future studies.},
  author       = {Larsson, Johan and Ekvall-Hansson, Eva and Miller, Michael},
  issn         = {1879-2219},
  language     = {eng},
  number       = {3},
  pages        = {820--824},
  publisher    = {Elsevier},
  series       = {Gait & Posture},
  title        = {Increased double support variability in elderly female fallers with vestibular asymmetry.},
  url          = {http://dx.doi.org/10.1016/j.gaitpost.2015.02.019},
  volume       = {41},
  year         = {2015},
}