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Ankle dorsiflexor muscle performance in healthy young men and women: reliability of eccentric peak torque and work measurements

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Author

  • Anna Maria Drake
  • Michelle M Porter
  • David Downham
  • Jan Lexell

Summary, in English

The aims of this study were: (i) to assess the test-retest intrarater reliability of eccentric ankle dorsiflexor muscle performance in young healthy men and women using the Biodex dynamometer; and (ii) to examine different statistical indices for the interpretation of reliability. Thirty men and women (age 22.5 +/- 2.5 years, mean +/- S.D.) performed three maximal eccentric contractions at 30 degrees/second and 90 degrees/second, with 7-10 days between test sessions. Reliability was evaluated with three intraclass correlation coefficients (ICC1,1, ICC2,1 and ICC3,1), and was excellent for peak torque (ICC 0.90-0.96) and good to excellent for work (ICC 0.69-0.83), with no discernible differences among the three ICCs. Method errors, assessed by the standard error of the measurement (S.E.M.) and S.E.M.%, were low. The Bland & Altman graphs and analyses indicated no significant systematic bias in the data. In conclusion, measurements of eccentric ankle dorsiflexor muscle performance in young healthy individuals using the Biodex are highly reliable.

Publishing year

2001

Language

English

Pages

90-96

Publication/Series

Journal of Rehabilitation Medicine

Volume

33

Issue

2

Document type

Journal article

Publisher

Taylor & Francis

Topic

  • Other Medical Sciences not elsewhere specified

Status

Published

Research group

  • Human Movement: health and rehabilitation

ISBN/ISSN/Other

  • ISSN: 1651-2081