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Reliability of knee extensor and flexor muscle strength measurements in persons with late effects of polio.

Flansbjer, Ulla-Britt LU and Lexell, Jan LU (2010) In Journal of rehabilitation medicine : official journal of the UEMS European Board of Physical and Rehabilitation Medicine 42(6). p.588-592
Abstract
OBJECTIVE: To assess the reliability of knee extensor and flexor muscle strength measurements in persons with late effects of polio. DESIGN: A test-retest reliability study. SUBJECTS: Thirty men and women (mean age 63 (standard deviation 6.4) years) with verified late effects of polio. METHODS: Knee extensor and flexor muscle strength in both lower limbs were measured twice 7 days apart using a Biodex dynamometer (isokinetic concentric contractions at 60 degrees /sec and isometric contractions with knee flexion angle 90 degrees) and a Leg Extension/Curl Rehab exercise machine with pneumatic resistance (HUR) (isotonic contractions). Reliability was assessed with the intraclass correlation coefficient (ICC1,1), the mean difference between... (More)
OBJECTIVE: To assess the reliability of knee extensor and flexor muscle strength measurements in persons with late effects of polio. DESIGN: A test-retest reliability study. SUBJECTS: Thirty men and women (mean age 63 (standard deviation 6.4) years) with verified late effects of polio. METHODS: Knee extensor and flexor muscle strength in both lower limbs were measured twice 7 days apart using a Biodex dynamometer (isokinetic concentric contractions at 60 degrees /sec and isometric contractions with knee flexion angle 90 degrees) and a Leg Extension/Curl Rehab exercise machine with pneumatic resistance (HUR) (isotonic contractions). Reliability was assessed with the intraclass correlation coefficient (ICC1,1), the mean difference between the test sessions (d) together with the 95% confidence intervals for d, the standard error of measurement (SEM and SEM%), the smallest real difference (SRD and SRD%) and Bland-Altman graphs. RESULTS: Test-retest agreements were high, (ICC1,1 0.93-0.99) and measurement errors generally small. The SEM% was 4-14% and the SRD% 11-39%, with the highest values for the isokinetic measurements. CONCLUSION: Knee muscle strength can be measured reliably and can be used to detect real changes after an intervention for a group of persons with late effects of polio, whereas the values may be too high for single individuals or to detect smaller short-term changes over time for a group of individuals. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Articular: physiology, Range of Motion, Postpoliomyelitis Syndrome: rehabilitation, Postpoliomyelitis Syndrome: physiopathology, Skeletal: physiology, Muscle, Muscle Strength: physiology, Knee Joint: physiology, Muscle Contraction: physiology
in
Journal of rehabilitation medicine : official journal of the UEMS European Board of Physical and Rehabilitation Medicine
volume
42
issue
6
pages
588 - 592
publisher
Taylor & Francis
external identifiers
  • WOS:000279001000012
  • PMID:20549165
  • Scopus:77953819982
ISSN
1651-2081
DOI
10.2340/16501977-0561
language
English
LU publication?
yes
id
bda1052c-d9d5-4724-96be-f786ee74e23f (old id 1626048)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/20549165?dopt=Abstract
date added to LUP
2010-07-05 20:11:13
date last changed
2016-11-10 16:44:17
@misc{bda1052c-d9d5-4724-96be-f786ee74e23f,
  abstract     = {OBJECTIVE: To assess the reliability of knee extensor and flexor muscle strength measurements in persons with late effects of polio. DESIGN: A test-retest reliability study. SUBJECTS: Thirty men and women (mean age 63 (standard deviation 6.4) years) with verified late effects of polio. METHODS: Knee extensor and flexor muscle strength in both lower limbs were measured twice 7 days apart using a Biodex dynamometer (isokinetic concentric contractions at 60 degrees /sec and isometric contractions with knee flexion angle 90 degrees) and a Leg Extension/Curl Rehab exercise machine with pneumatic resistance (HUR) (isotonic contractions). Reliability was assessed with the intraclass correlation coefficient (ICC1,1), the mean difference between the test sessions (d) together with the 95% confidence intervals for d, the standard error of measurement (SEM and SEM%), the smallest real difference (SRD and SRD%) and Bland-Altman graphs. RESULTS: Test-retest agreements were high, (ICC1,1 0.93-0.99) and measurement errors generally small. The SEM% was 4-14% and the SRD% 11-39%, with the highest values for the isokinetic measurements. CONCLUSION: Knee muscle strength can be measured reliably and can be used to detect real changes after an intervention for a group of persons with late effects of polio, whereas the values may be too high for single individuals or to detect smaller short-term changes over time for a group of individuals.},
  author       = {Flansbjer, Ulla-Britt and Lexell, Jan},
  issn         = {1651-2081},
  keyword      = {Articular: physiology,Range of Motion,Postpoliomyelitis Syndrome: rehabilitation,Postpoliomyelitis Syndrome: physiopathology,Skeletal: physiology,Muscle,Muscle Strength: physiology,Knee Joint: physiology,Muscle Contraction: physiology},
  language     = {eng},
  number       = {6},
  pages        = {588--592},
  publisher    = {ARRAY(0x83fe6f0)},
  series       = {Journal of rehabilitation medicine : official journal of the UEMS European Board of Physical and Rehabilitation Medicine},
  title        = {Reliability of knee extensor and flexor muscle strength measurements in persons with late effects of polio.},
  url          = {http://dx.doi.org/10.2340/16501977-0561},
  volume       = {42},
  year         = {2010},
}