{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T05:02:50Z","timestamp":1776747770284,"version":"3.51.2"},"reference-count":26,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2010,8,1]],"date-time":"2010-08-01T00:00:00Z","timestamp":1280620800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chron Respir Dis"],"published-print":{"date-parts":[[2010,8]]},"abstract":"<jats:p> Background: Respiratory muscle strength is used diagnostically in clinical practice and as an outcome measure in clinical trials in various chronic lung diseases. There is limited data on its repeatability in people with non-CF bronchiectasis. The aim of the present study was to assess the repeatability of maximal inspiratory (P<jats:sub> I<\/jats:sub>max) and expiratory pressures (P<jats:sub>E<\/jats:sub>max) in a group of patients with stable, moderate-to-severe non-CF bronchiectasis. Methods: Twenty participants with stable moderate-to-severe non-CF bronchiectasis were recruited. Respiratory muscle strength measurements (three maximal inspiratory and expiratory pressures) were made on 2 separate days. A standard protocol was used, including practice tests, before obtaining three technically acceptable and reproducible readings with a difference of 10% or less between values. Clinical trial registration number: ClinicalTrials.gov: NCT00487149. Results: The mean (SD) age of the non-CF bronchiectasis group was 63 (9) years. Maximal inspiratory pressures were repeatable with mean (SD) for highest P<jats:sub>I<\/jats:sub>max, Test 1 and Test 2, 75.90 (20) and 79.40 (19) cmH<jats:sub>2<\/jats:sub>O, and limits of agreement (mean difference \u00b1 2SD) \u20143.50 \u00b1 20 cmH<jats:sub>2<\/jats:sub>O, (p = 0.14). Maximal expiratory pressures differed significantly with mean (SD) for highest P<jats:sub>E<\/jats:sub>max, Test 1 and Test 2, 102.25 (27) and 112.30 (32) cmH<jats:sub> 2<\/jats:sub>O, and limits of agreement (mean difference \u00b1 2SD) \u201410.10 \u00b1 35 cmH<jats:sub>2<\/jats:sub>O, (p = 0.02). The intraclass correlation coefficient (95% CI) for highest P<jats:sub>I<\/jats:sub>max and P<jats:sub>E<\/jats:sub>max was 0.93 (95% CI 0.82 to 0.97) and 0.90 (95% CI 0.76 to 0.96), respectively. Conclusion: Maximal inspiratory pressure measurements were repeatable during a period of clinical stability in moderate-to-severe non-CF bronchiectasis, suggesting this may be a useful outcome measure in non-CF bronchiectasis. Once a baseline has been established, a second visit is not required. P<jats:sub>E<\/jats:sub>max was not a repeatable measure and further study is necessary to ascertain how much practice testing is required to obtain an accurate value. <\/jats:p>","DOI":"10.1177\/1479972310375595","type":"journal-article","created":{"date-parts":[[2010,8,5]],"date-time":"2010-08-05T14:08:15Z","timestamp":1281017295000},"page":"165-171","source":"Crossref","is-referenced-by-count":24,"title":["Respiratory muscle pressures in non-CF bronchiectasis: Repeatability and reliability"],"prefix":"10.1177","volume":"7","author":[{"given":"F.","family":"Moran","sequence":"first","affiliation":[{"name":"University of Ulster, Newtownabbey, Northern Ireland,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Piper","sequence":"additional","affiliation":[{"name":"University of Sydney, Sydney, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"JS","family":"Elborn","sequence":"additional","affiliation":[{"name":"Centre for Infection and Immunity, Queens University, Belfast, Northern Ireland, Department of Respiratory Medicine, Belfast City Hospital, Belfast, Northern Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"JM","family":"Bradley","sequence":"additional","affiliation":[{"name":"University of Ulster, Newtownabbey, Northern Ireland, Department of Respiratory Medicine, Belfast City Hospital, Belfast, Northern Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2010,8,5]]},"reference":[{"key":"atypb1","author":"Moxham J.","year":"1991","journal-title":"Respir Dis Practice"},{"key":"atypb2","doi-asserted-by":"publisher","DOI":"10.1016\/0954-6111(95)90153-1"},{"key":"atypb3","first-page":"57","volume":"31","author":"Troosters T.","year":"2005","journal-title":"Eur Respir Mon"},{"key":"atypb4","doi-asserted-by":"publisher","DOI":"10.1152\/jappl.1981.51.2.494"},{"key":"atypb5","doi-asserted-by":"crossref","first-page":"1819","DOI":"10.1378\/chest.103.6.1819","volume":"103","author":"Naon H.","year":"1993","journal-title":"Chest"},{"key":"atypb6","doi-asserted-by":"publisher","DOI":"10.1542\/peds.103.3.e32"},{"key":"atypb7","doi-asserted-by":"publisher","DOI":"10.1136\/thorax.58.10.880"},{"key":"atypb8","doi-asserted-by":"publisher","DOI":"10.1136\/thx.2008.110726"},{"key":"atypb9","doi-asserted-by":"publisher","DOI":"10.1164\/rccm.166.4.518"},{"key":"atypb10","doi-asserted-by":"publisher","DOI":"10.1378\/chest.111.3.802"},{"key":"atypb11","doi-asserted-by":"publisher","DOI":"10.1164\/rccm.200204-347OC"},{"key":"atypb12","doi-asserted-by":"publisher","DOI":"10.1067\/mpd.2001.117288"},{"key":"atypb13","first-page":"5","volume":"16","author":"Quanjer PH","year":"1993","journal-title":"Official Statement of the European Respiratory Society. 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