| Title |
Test-retest reliability of lower limb isokinetic endurance in COPD: a comparison of angular velocities
|
|---|---|
| Published in |
International Journal of Chronic Obstructive Pulmonary Disease, June 2015
|
| DOI | 10.2147/copd.s81806 |
| Pubmed ID | |
| Authors |
Fernanda Ribeiro, Pierre-Alexis Lépine, Corine Garceau-Bolduc, Valérie Coats, Étienne Allard, François Maltais, Didier Saey |
| Abstract |
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). 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. 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. Despite a limited sample size, our findings support 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. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Japan | 1 | 50% |
| Unknown | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 50% |
| Practitioners (doctors, other healthcare professionals) | 1 | 50% |
Mendeley readers
The data shown below were compiled from readership statistics for 93 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 1% |
| Portugal | 1 | 1% |
| France | 1 | 1% |
| Unknown | 90 | 97% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 16 | 17% |
| Student > Bachelor | 12 | 13% |
| Student > Ph. D. Student | 10 | 11% |
| Researcher | 9 | 10% |
| Student > Postgraduate | 7 | 8% |
| Other | 19 | 20% |
| Unknown | 20 | 22% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 20 | 22% |
| Nursing and Health Professions | 19 | 20% |
| Sports and Recreations | 10 | 11% |
| Engineering | 5 | 5% |
| Social Sciences | 2 | 2% |
| Other | 10 | 11% |
| Unknown | 27 | 29% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 04 July 2015.
All research outputs
#16,722,913
of 25,374,917 outputs
Outputs from International Journal of Chronic Obstructive Pulmonary Disease
#1,613
of 2,577 outputs
Outputs of similar age
#159,109
of 281,412 outputs
Outputs of similar age from International Journal of Chronic Obstructive Pulmonary Disease
#34
of 71 outputs
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