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Predictors of changes in gait performance over four years in persons with late effects of polio

Flansbjer, Ulla Britt LU ; Lexell, Jan LU and Brogårdh, Christina LU (2017) In NeuroRehabilitation 41(2). p.403-411
Abstract

BACKGROUND: Reduced gait performance is common in persons with late effects of polio. OBJECTIVE: To identify predictors of change in gait performance over four years in persons with late effects of polio. METHODS: Gait performance was assessed annually in 51 ambulatory persons (mean age 64 years, SD 6) by the Timed "Up & Go" (TUG), Comfortable and Fast Gait Speed (CGS, FGS), and 6-Minute Walk Test (6MWT). Isokinetic knee extensor and flexor muscle strength was measured with a Biodex dynamometer. Mixed Linear Models were used to analyze changes in gait performance and to identify any predictors of change among the covariates gender, age, body mass index, time with new symptoms, baseline reduction in gait performance and knee muscle... (More)

BACKGROUND: Reduced gait performance is common in persons with late effects of polio. OBJECTIVE: To identify predictors of change in gait performance over four years in persons with late effects of polio. METHODS: Gait performance was assessed annually in 51 ambulatory persons (mean age 64 years, SD 6) by the Timed "Up & Go" (TUG), Comfortable and Fast Gait Speed (CGS, FGS), and 6-Minute Walk Test (6MWT). Isokinetic knee extensor and flexor muscle strength was measured with a Biodex dynamometer. Mixed Linear Models were used to analyze changes in gait performance and to identify any predictors of change among the covariates gender, age, body mass index, time with new symptoms, baseline reduction in gait performance and knee muscle strength. RESULTS: There were significant linear effects over time (reduction per year) for three gait performance tests; CGS (0.8%; p<0.05), FGS (1.7%; p<0.001), and 6MWT (0.7%; p<0.05) with significant random effects for all tests. The strongest predictor of a change in gait performance was the individual variations in the knee flexor strength (p<0.001). CONCLUSION: The small gradual reduction in gait performance over time in persons with late effects of polio is primarily determined by the individual variations in the knee flexor strength.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
gait, longitudinal, outcome assessment, Post poliomyelitis syndrome, rehabilitation
in
NeuroRehabilitation
volume
41
issue
2
pages
9 pages
publisher
IOS Press
external identifiers
  • scopus:85031728424
ISSN
1053-8135
DOI
10.3233/NRE-162057
language
English
LU publication?
yes
id
10e4f679-5762-4663-97b7-aaa18c2d5fd8
date added to LUP
2017-11-15 13:05:56
date last changed
2018-01-07 12:25:56
@article{10e4f679-5762-4663-97b7-aaa18c2d5fd8,
  abstract     = {<p>BACKGROUND: Reduced gait performance is common in persons with late effects of polio. OBJECTIVE: To identify predictors of change in gait performance over four years in persons with late effects of polio. METHODS: Gait performance was assessed annually in 51 ambulatory persons (mean age 64 years, SD 6) by the Timed "Up &amp; Go" (TUG), Comfortable and Fast Gait Speed (CGS, FGS), and 6-Minute Walk Test (6MWT). Isokinetic knee extensor and flexor muscle strength was measured with a Biodex dynamometer. Mixed Linear Models were used to analyze changes in gait performance and to identify any predictors of change among the covariates gender, age, body mass index, time with new symptoms, baseline reduction in gait performance and knee muscle strength. RESULTS: There were significant linear effects over time (reduction per year) for three gait performance tests; CGS (0.8%; p&lt;0.05), FGS (1.7%; p&lt;0.001), and 6MWT (0.7%; p&lt;0.05) with significant random effects for all tests. The strongest predictor of a change in gait performance was the individual variations in the knee flexor strength (p&lt;0.001). CONCLUSION: The small gradual reduction in gait performance over time in persons with late effects of polio is primarily determined by the individual variations in the knee flexor strength.</p>},
  author       = {Flansbjer, Ulla Britt and Lexell, Jan and Brogårdh, Christina},
  issn         = {1053-8135},
  keyword      = {gait,longitudinal,outcome assessment,Post poliomyelitis syndrome,rehabilitation},
  language     = {eng},
  number       = {2},
  pages        = {403--411},
  publisher    = {IOS Press},
  series       = {NeuroRehabilitation},
  title        = {Predictors of changes in gait performance over four years in persons with late effects of polio},
  url          = {http://dx.doi.org/10.3233/NRE-162057},
  volume       = {41},
  year         = {2017},
}