| Title |
Determining the minimally important difference in quadriceps strength in individuals with COPD using a fixed dynamometer
|
|---|---|
| Published in |
International Journal of Chronic Obstructive Pulmonary Disease, August 2018
|
| DOI | 10.2147/copd.s161342 |
| Pubmed ID | |
| Authors |
Trija Vaidya, Marc Beaumont, Claire de Bisschop, Lucie Bazerque, Camille Le Blanc, Anne Vincent, Hakima Ouksel, Arnaud Chambellan |
| Abstract |
Measurement of quadriceps muscular force is recommended in individuals with COPD, notably during a pulmonary rehabilitation program (PRP). However, the tools used to measure quadriceps maximal voluntary contraction (QMVC) and the clinical relevance of the results, as well as their interpretation for a given patient, remain a matter of debate. The objective of this study was to estimate the minimally important difference (MID) of QMVC using a fixed dynamometer in individuals with COPD undergoing a PRP. Individuals with COPD undergoing a PRP were included in this study. QMVC was measured using a dynamometer (MicroFET2) fixed on a rigid support according to a standard-ized methodology. Exercise capacity was measured by 6-minute walk distance (6MWD) and evaluation of quality of life with St George's respiratory questionnaire (SGRQ) and Hospital Anxiety and Depression Scale (HADS) total scores. All measures were obtained at baseline and the end of the PRP. The MID was calculated using distribution-based methods. A total of 157 individuals with COPD (age 62.9±9.0 years, forced expiratory volume in 1 second 47.3%±18.6% predicted) were included in this study. At the end of the PRP, the patients had improved their quadriceps force significantly by 8.9±15.6 Nm (P<0.001), as well as 6MWD by 42±50 m (P<0.001), SGRQ total score by -9±17 (P<0.001) and HADS total score by -3±6 (P<0.001). MID estimation using distribution-based analysis was 7.5 Nm by empirical rule effect size and 7.8 Nm by Cohen's effect size. Measurement of QMVC using a fixed dynamometer is a simple and valuable tool capable of assessing improvement in quadriceps muscle force after a PRP. We suggest an MID of 7.5 Nm to identify beneficial changes after a PRP intervention. |
X Demographics
The data shown below were collected from the profiles of 19 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 3 | 16% |
| Spain | 2 | 11% |
| Greece | 1 | 5% |
| Turkey | 1 | 5% |
| Brazil | 1 | 5% |
| United States | 1 | 5% |
| Taiwan | 1 | 5% |
| Canada | 1 | 5% |
| Unknown | 8 | 42% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 10 | 53% |
| Scientists | 5 | 26% |
| Practitioners (doctors, other healthcare professionals) | 3 | 16% |
| Science communicators (journalists, bloggers, editors) | 1 | 5% |
Mendeley readers
The data shown below were compiled from readership statistics for 76 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 76 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Bachelor | 11 | 14% |
| Student > Ph. D. Student | 9 | 12% |
| Researcher | 9 | 12% |
| Student > Master | 7 | 9% |
| Other | 6 | 8% |
| Other | 9 | 12% |
| Unknown | 25 | 33% |
| Readers by discipline | Count | As % |
|---|---|---|
| Nursing and Health Professions | 16 | 21% |
| Medicine and Dentistry | 16 | 21% |
| Sports and Recreations | 6 | 8% |
| Biochemistry, Genetics and Molecular Biology | 2 | 3% |
| Psychology | 2 | 3% |
| Other | 4 | 5% |
| Unknown | 30 | 39% |
Attention Score in Context
This research output has an Altmetric Attention Score of 12. 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 03 September 2018.
All research outputs
#3,009,603
of 25,455,127 outputs
Outputs from International Journal of Chronic Obstructive Pulmonary Disease
#328
of 2,581 outputs
Outputs of similar age
#57,353
of 342,103 outputs
Outputs of similar age from International Journal of Chronic Obstructive Pulmonary Disease
#15
of 69 outputs
Altmetric has tracked 25,455,127 research outputs across all sources so far. Compared to these this one has done well and is in the 88th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,581 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.5. This one has done well, scoring higher than 87% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 342,103 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 83% of its contemporaries.
We're also able to compare this research output to 69 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 79% of its contemporaries.