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Test-retest reliability of lower limb isokinetic endurance in COPD : a comparison of angular velocities

Ribeiro Fernanda A., Lépine Pierre-Alexis, Garceau-Bolduc Corine, Coats Valérie, Allard Étienne, Maltais François et Saey Didier. (2015). Test-retest reliability of lower limb isokinetic endurance in COPD : a comparison of angular velocities. International Journal of Chronic Obstructive Pulmonary Disease, 10, p. 1163-1172.

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Résumé

Background: The purpose of this study was to determine and compare the test-retest reliability of quadriceps isokinetic endurance testing at two knee angular velocities in patients with chronic obstructive pulmonary disease (COPD).

Methods: After one familiarization session, 14 patients with moderate to severe COPD (mean age 65±4 years; forced expiratory volume in 1 second (FEV1) 55%±18% predicted) performed two quadriceps isokinetic endurance tests on two separate occasions within a 5–7-day interval. Quadriceps isokinetic endurance tests consisted of 30 maximal knee extensions at angular velocities of 90° and 180° per second, performed in random order. Test-retest reliability was assessed for peak torque, muscle endurance, work slope, work fatigue index, and changes in FEV1 for dyspnea and leg fatigue from rest to the end of the test. The intraclass correlation coefficient, minimal detectable change, and limits of agreement were calculated.

Results: High test-retest reliability was identified for peak torque and muscle total work at both velocities. Work fatigue index was considered reliable at 90° per second but not at 180° per second. A lower reliability was identified for dyspnea and leg fatigue scores at both angular velocities.

Conclusion: Despite a limited sample size, our findings su pport the use of a 30-maximal repetition isokinetic muscle testing procedure at angular velocities of 90° and 180° per second in patients with moderate to severe COPD. Endurance measurement (total isokinetic work) at 90° per second was highly reliable, with a minimal detectable change at the 95% confidence level of 10%. Peak torque and fatigue index could also be assessed reliably at 90° per second. Evaluation of dyspnea and leg fatigue using the modified Borg scale of perceived exertion was poorly reliable and its clinical usefulness is questionable. These results should be useful in the design and interpretation of future interventions aimed at improving muscle endurance in COPD.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:10
Pages:p. 1163-1172
Version évaluée par les pairs:Oui
Date:2015
Sujets:Sciences de la santé
Sciences de la santé > Sciences de l'activité physique et réadaptation > Physiothérapie
Sciences de la santé > Sciences médicales > Pneumologie
Département, module, service et unité de recherche:Départements et modules > Département des sciences de la santé > Unité d'enseignement en physiothérapie
Mots-clés:Chronic obstructive pulmonary disease, COPD, lower limb, isokinetic endurance, test-retest reliability, BPCO, bronchopneumopathie chronique obstructive, membre inférieur, endurance isocinétique, fiabilité test-retest, répétabilité
Déposé le:02 mars 2016 21:31
Dernière modification:25 nov. 2016 18:29
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