Reference equations for quadriceps strength, endurance and power: a multicentre study
| Autor: | Sophie Tanguay, Didier Saey, Sarah Marklund, Andre Nyberg, Sarah Gephine, Erik Frykholm, Jana De Brandt, Chris Burtin, François Maltais |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | ERJ Open Research, Vol 9, Iss 4 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2312-0541 23120541 |
| DOI: | 10.1183/23120541.00313-2023 |
| Popis: | Introduction The lack of reference values of lower-limb muscle function hinders the clinical recommendations of its measurement in patients with COPD. Therefore, this study aimed to develop reference equations to predict reference values for quadriceps strength, endurance and power and evaluate their construct validity in patients with COPD. Methods Quadriceps strength, endurance and power were assessed in 158 healthy individuals and 87 patients with COPD. In addition, patients with COPD performed a 6-min walk test (6MWT) and a 1-min sit-to-stand test (1STS). Multiple linear regressions were performed to develop reference equations. The proportion of patients with COPD with reduced quadriceps function was determined, and correlations between quadriceps strength, endurance and power expressed in percentage of predicted values and 6MWT and 1STS performance were used to document the construct validity of the reference equation. Results Except for quadriceps isometric endurance, the proposed reference equations explained 50–70% of the variance of the quadriceps properties in healthy individuals. All quadriceps properties were systematically reduced in a large proportion of patients with COPD compared to healthy individuals. Correlation coefficients between quadriceps properties expressed in percentage of predicted values and 6MWT and 1STS performance ranged between 0.28 and 0.49 (all p |
| Databáze: | Directory of Open Access Journals |
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