TY - JOUR T1 - Is there a learning effect on 1-minute sit-to-stand test on post-COVID-19 patients? JF - ERJ Open Research JO - erjor DO - 10.1183/23120541.00189-2022 SP - 00189-2022 AU - Ana Sevillano-Castaño AU - Renata Peroy-Badal AU - Rodrigo Torres-Castro AU - Elena Gimeno-Santos AU - Pablo García Fernández AU - Cristina Garcia Vila AU - Aranzazú Ariza Alfaro AU - Rosalia De Dios Álvarez AU - Jordi Vilaró AU - Isabel Blanco Y1 - 2022/01/01 UR - http://openres.ersjournals.com/content/early/2022/06/30/23120541.00189-2022.abstract N2 - Background In field tests, clinical guidelines recommend performing two tests due to the learning effect; however, in the 1-minute sit-to-stand test (1min-STST) it is not clear that this effect exists.Objective To determine the learning effect of the 1min-STST in post-COVID-19 patients.Methods A cross-sectional study was conducted in patients recovering from COVID-19 pneumonia, older than 18 years. The 1min-STST was performed twice with a difference of 30 min. The intraclass correlation coefficient (ICC) was used to assess the learning effect and the Bland-Altman plot was used to evaluate agreement between both tests.Results Forty-two patients were included (mean age 53.8±10.3 years; 52% female). Twenty-nine patients were hospitalised with a median of 15 (4–27) days. Only seven patients required ICU admission. The median of repetitions in the 1min-STST was 22 (19–25.3) and 22.5 (20–25) in the first and second tests, without significant differences. None of the physiological variables evaluated showed a significant difference between both tests. We found an ICC of 0.984 (IC95 0.971–0.992). Bland-Altman analysis showed a bias of −0.38 for the test-retest measurement error.Conclusion The 1min-STST is a repeatable test without differences between the first and second tests. A single test is necessary to assess exercise tolerance in post-COVID-19 patients with this field test.FootnotesThis manuscript has recently been accepted for publication in the ERJ Open Research. It is published here in its accepted form prior to copyediting and typesetting by our production team. After these production processes are complete and the authors have approved the resulting proofs, the article will move to the latest issue of the ERJOR online. Please open or download the PDF to view this article.Conflict of interests: The authors declare to have no conflict of interest. ER -