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Reliability of isokinetic ankle dorsiflexor strength measurements in healthy young men and women

Drake, Anna Maria LU ; Porter, M M; Downham, D and Lexell, Jan LU (1999) In Scandinavian Journal of Rehabilitation Medicine 31(4). p.229-239
Abstract
The purposes of this study were: (i) to determine the test-retest reliability of isokinetic ankle dorsiflexor strength measurements in young healthy adults using the Biodex dynamometer, and (ii) to examine several statistical measures for the interpretation of reliability. Thirty men and women (mean age 23 +/- 3 years) performed three maximal concentric contractions at 30 degrees/s, 60 degrees/s, 90 degrees/s, 120 degrees/s and 150 degrees/s. Reliability of peak torque, work and torque at a specific time were assessed by calculating the intraclass correlation coefficient (ICC 2,1), Pearson product moment correlation coefficient (r), standard error of the measurement (SEM), method error (ME) and coefficient of variation (CV), and by... (More)
The purposes of this study were: (i) to determine the test-retest reliability of isokinetic ankle dorsiflexor strength measurements in young healthy adults using the Biodex dynamometer, and (ii) to examine several statistical measures for the interpretation of reliability. Thirty men and women (mean age 23 +/- 3 years) performed three maximal concentric contractions at 30 degrees/s, 60 degrees/s, 90 degrees/s, 120 degrees/s and 150 degrees/s. Reliability of peak torque, work and torque at a specific time were assessed by calculating the intraclass correlation coefficient (ICC 2,1), Pearson product moment correlation coefficient (r), standard error of the measurement (SEM), method error (ME) and coefficient of variation (CV), and by plotting the differences between observations against their means. Isokinetic tests of ankle dorsiflexor strength in healthy young adults using the Biodex dynamometer were highly reliable (ICC 0.61-0.93). It is recommended that test-retest reliability analyses include the ICC and assessments of measurement errors (SEM, ME or CV), as well as graphs to indicate any systematic variations in the data. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Scandinavian Journal of Rehabilitation Medicine
volume
31
issue
4
pages
229 - 239
publisher
Scandinavian University Press
external identifiers
  • pmid:10599900
  • scopus:0032737908
ISSN
0036-5505
language
English
LU publication?
yes
id
111457db-8d5c-4f94-9a4b-e6786ca3d763 (old id 1115577)
date added to LUP
2008-07-09 11:43:50
date last changed
2017-11-05 04:33:15
@article{111457db-8d5c-4f94-9a4b-e6786ca3d763,
  abstract     = {The purposes of this study were: (i) to determine the test-retest reliability of isokinetic ankle dorsiflexor strength measurements in young healthy adults using the Biodex dynamometer, and (ii) to examine several statistical measures for the interpretation of reliability. Thirty men and women (mean age 23 +/- 3 years) performed three maximal concentric contractions at 30 degrees/s, 60 degrees/s, 90 degrees/s, 120 degrees/s and 150 degrees/s. Reliability of peak torque, work and torque at a specific time were assessed by calculating the intraclass correlation coefficient (ICC 2,1), Pearson product moment correlation coefficient (r), standard error of the measurement (SEM), method error (ME) and coefficient of variation (CV), and by plotting the differences between observations against their means. Isokinetic tests of ankle dorsiflexor strength in healthy young adults using the Biodex dynamometer were highly reliable (ICC 0.61-0.93). It is recommended that test-retest reliability analyses include the ICC and assessments of measurement errors (SEM, ME or CV), as well as graphs to indicate any systematic variations in the data.},
  author       = {Drake, Anna Maria and Porter, M M and Downham, D and Lexell, Jan},
  issn         = {0036-5505},
  language     = {eng},
  number       = {4},
  pages        = {229--239},
  publisher    = {Scandinavian University Press},
  series       = {Scandinavian Journal of Rehabilitation Medicine},
  title        = {Reliability of isokinetic ankle dorsiflexor strength measurements in healthy young men and women},
  volume       = {31},
  year         = {1999},
}