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Primary outcome: inspiratory muscle strength (Maximal Inspiratory Pressure). Secondary outcomes: expiratory muscle strength (Maximal Expiratory Pressure); functional capacity (Six\u2011Minute Walk Test; One\u2011Minute Sit\u2011to\u2011Stand); lung function (spirometry); dyspnoea (mMRC); respiratory symptoms (chest tightness, impaired deep breathing, breathing\u2011related pain); cough frequency (CAAT cough item); fatigue (Fatigue Severity Scale); physical activity (Fr\u00e4ndin\u2013Grimby Activity Scale); activity limitations (Patient\u2011Specific Functional Scale); and health-related quality of life (EQ\u20115D\u20115L). Intention-to-treat analyses used imputed missing data. Estimated sample size: 90.\nResults: Forty-four participants were included (median age 47; 82% women; n\u2009=\u200922\/group). Between\u2011group differences favoured the intervention for inspiratory muscle strength (mean difference: 18%; 95% CI: 5\u201330; OR for clinically meaningful improvement: 7.08, 95% CI: 1.31\u201338.32) and cough frequency. No other between-group differences were observed.\nConclusion: Inspiratory muscle training may improve inspiratory muscle strength and reduce cough frequency, but limited sample size and underrepresentation of the most severely affected warrant cautious interpretation.<\/jats:p>","DOI":"10.2340\/jrm.v58.44931","type":"journal-article","created":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T12:55:58Z","timestamp":1776776158000},"page":"jrm44931","source":"Crossref","is-referenced-by-count":2,"title":["Effect of inspiratory muscle training on inspiratory muscle strength in adults with post-COVID-19 condition and inspiratory muscle weakness: a randomized controlled trial"],"prefix":"10.2340","volume":"58","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-8320-9948","authenticated-orcid":false,"given":"Anna","family":"T\u00f6rnberg","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7949-5864","authenticated-orcid":false,"given":"Anna","family":"Svensson-Raskh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0550-1675","authenticated-orcid":false,"given":"Elisabeth","family":"Rydwik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0893-7653","authenticated-orcid":false,"given":"Alexandra","family":"Halvarsson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5399-0982","authenticated-orcid":false,"given":"Judith","family":"Bruchfeld","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6731-8468","authenticated-orcid":false,"given":"Malin","family":"Nygren-Bonnier","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1183","published-online":{"date-parts":[[2026,4,21]]},"reference":[{"key":"150903","doi-asserted-by":"crossref","unstructured":"Soriano JB, Murthy S, Marshall JC, Relan P, Diaz JV. 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