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Test-retest reliability of isometric and isokinetic knee extension and flexion in patients with fibromyalgia: Evaluation of the smallest real difference
Adsuar, Jose C. Olivares, Pedro R. del Pozo-Cruz, Borja Parraca, Jose A. Gusi, Narcis
Adsuar, Jose C.
Olivares, Pedro R.
del Pozo-Cruz, Borja
Parraca, Jose A.
Gusi, Narcis
Abstract
Adsuar JC, Olivares PR, del Pozo-Cruz B, Parraca JA, Gusi N. Test-retest reliability of isometric and isokinetic knee extension and flexion in patients with fibromyalgia: evaluation of the smallest real difference. Objective: To investigate the reliability of isokinetic peak torque and work and isometric peak torque measurements for knee flexion and extension in fibromyalgia (FM) patients by determining the smallest real difference (SRD). Design: Test-retest reliability study. Setting: University laboratory. Participants: Women with FM (N=37) aged between 34 and 74 years. Interventions: Not applicable. Main Outcome Measures: The participants performed isometric, concentric, and eccentric tests of the knee. Unilateral maximal peak torque and average work were measured for each direction (flexion, extension) and contraction (isometric, concentric, eccentric) type. Relative reliability, absolute reliability, and SRD were calculated. The 3 tests were repeated after an interval of 7 days. Results: With the exception of eccentric flexion, all peak torque measures had an intraclass correlation coefficient (ICC) of > 0.90, and all work measures had an ICC of > 0.85. The SRD ranged between 21% and 37% for all peak torque measures and between 40% and 73% for all work measures. Conclusions: Isokinetic dynamometry provides reliable measurement of peak torque and work for isometric, concentric, and eccentric knee flexion and extension in patients with FM. The present study has generated novel SRD data, which will assist physicians, therapists, and clinicians in interpreting posttreatment changes in patients with FM.
Keywords
fibromyalgia, rehabilitation, reproducibility of results, isokinetic dynamometry, muscle strength
Date
2011
Type
Journal article
Journal
Archives of Physical Medicine and Rehabilitation
Book
Volume
92
Issue
10
Page Range
1646-1651
Article Number
ACU Department
Institute for Positive Psychology and Education
Faculty of Health Sciences
Faculty of Health Sciences
Relation URI
Source URL
Event URL
Open Access Status
License
File Access
Controlled