Article

OBJECTIVE: To investigate the applicability and reliability of isokinetic
strength measurements during concentric and eccentric actions of the shoulder muscles in fibromyalgia (FM) patients. DESIGN: Test-retest reliability study.
University laboratory. PARTICIPANTS: Women with FM (N=25) aged 37 to 69.
INTERVENTIONS: Not applicable. OUTCOME MEASURES: Two isokinetic tests of the
shoulder were repeated after an interval of 7 days. Each test involved 3
repetitions of abduction and adduction performed at a rate of 60 degrees /s. The
first test involved 2 concentric muscle actions (concentric/concentric test). The
second test involved concentric abduction followed by eccentric adduction
(concentric/eccentric test). Unilateral peak torque (Nm) and average work (J)
were measured. Applicability was calculated as the proportion of participants who
were able to complete every test. Reliability was analyzed by intraclass
coefficient (ICC), standard error of measurement, and smallest real difference
(SRD). RESULTS: Applicability was 84% for the concentric/concentric test and 52%
for the concentric/eccentric test. The main factor influencing applicability was
age. In the concentric/eccentric test, measurement of peak torque showed high
reliability for the abduction (ICC=.88; standard error of measurement=1.82;
SRD=5.05) and adduction (ICC=.89; standard error of measurement=3.83; SRD=10.62)
phases. In the concentric/concentric test, measurement of peak torque showed low
reliability in the abduction phase (ICC=.29; standard error of measurement=6.45;
SRD=17.87) and excellent reliability in the adduction phase (ICC=.92; standard
error of measurement=5.95; SRD=16.50). CONCLUSIONS: The applicability of shoulder
isokinetic tests in FM patients who are women may be affected by age. In
comparison, the concentric/concentric test was more applicable and less reliable
than the concentric/eccentric test during abduction and adduction. These findings
will facilitate the clinical interpretation of changes in isometric and
isokinetic shoulder adduction and abduction tests in women with FM.
CI - Copyright (c) 2013 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS