{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T06:52:27Z","timestamp":1777531947793,"version":"3.51.4"},"reference-count":15,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2017,8,30]],"date-time":"2017-08-30T00:00:00Z","timestamp":1504051200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100000925","name":"National Health and Medical Research Council","doi-asserted-by":"publisher","award":["1019989"],"award-info":[{"award-number":["1019989"]}],"id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Chron Respir Dis"],"published-print":{"date-parts":[[2018,5]]},"abstract":"<jats:p>\n                    Exercise-induced oxygen desaturation (EID) is prevalent in people with chronic obstructive pulmonary disease (COPD). This article reports a sub-analysis from a randomized controlled trial (RCT) in people with COPD and EID (COPD\/EID). The primary aim, in people with COPD\/ EID, was to determine the repeatability of the distance and time walked in the incremental shuttle walk test (ISWT) and endurance shuttle walk test (ESWT), respectively. A secondary aim was to determine whether any participant characteristics predicted those who did not demonstrate improvements on a repeat ISWT or ESWT. Participants with nadir oxygen saturation (SpO\n                    <jats:sub>2<\/jats:sub>\n                    ) &lt; 90% on the 6-minute walk test were recruited to the RCT. Two ISWTs and two ESWTs were then performed as part of the baseline assessments, and participants were included in this sub-analysis if their nadir SpO\n                    <jats:sub>2<\/jats:sub>\n                    was &lt;90% during the better of two ISWTs. Repeatability of the tests was analysed using Bland\u2013Altman plots and paired t-tests. Participant characteristics of age, lung function, level of nadir SpO\n                    <jats:sub>2<\/jats:sub>\n                    and end-test dyspnoea were used to predict those who were not likely to demonstrate improvements on a repeat test using receiver operating curves. Eighty-seven participants (mean age (standard deviation, SD) 70 (7) years; forced expiratory volume in one second (FEV\n                    <jats:sub>1<\/jats:sub>\n                    ) 47 (17)% predicted) were included. The mean differences (coefficient of repeatability) for the ISWTs and ESWTs were 9 m (55 m) and 19 seconds (142 seconds) respectively ( p &lt; 0.05). No participant characteristic predicted the absence of improvement on the second ISWT (area under the curve (AUC) ranged from 0.49 to 0.58, all p &gt; 0.2) or the second ESWT (AUC ranged from 0.43 to 0.52, all p &gt; 0.3). Although repeating the tests showed only small improvements in distance (ISWT) and time (ESWT) walked in people with COPD\/EID, the variability was large making definite conclusions about test repeatability in these individuals difficult.\n                  <\/jats:p>","DOI":"10.1177\/1479972317729051","type":"journal-article","created":{"date-parts":[[2017,8,30]],"date-time":"2017-08-30T03:06:36Z","timestamp":1504062396000},"page":"131-137","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Shuttle walk tests in people with COPD who demonstrate exercise-induced oxygen desaturation: An analysis of test repeatability and cardiorespiratory responses"],"prefix":"10.1177","volume":"15","author":[{"given":"Zoe","family":"McKeough","sequence":"first","affiliation":[{"name":"Discipline of Physiotherapy, Faculty of Health Sciences, The University of Sydney, Lidcombe, New South Wales, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Regina","family":"Leung","sequence":"additional","affiliation":[{"name":"Discipline of Physiotherapy, Faculty of Health Sciences, The University of Sydney, Lidcombe, New South Wales, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ji Hui","family":"Neo","sequence":"additional","affiliation":[{"name":"Discipline of Physiotherapy, Faculty of Health Sciences, The University of Sydney, Lidcombe, New South Wales, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sue","family":"Jenkins","sequence":"additional","affiliation":[{"name":"Department of Physiotherapy, Sir Charles Gairdner Hospital, Hospital Ave, Nedlands, Western Australia, Australia"},{"name":"School of Physiotherapy and Exercise Science, Faculty of Health Sciences, Curtin University, Perth, Western Australia, Australia"},{"name":"Institute for Respiratory Health, Hospital Ave, Nedlands, Western Australia, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anne","family":"Holland","sequence":"additional","affiliation":[{"name":"Discipline of Physiotherapy, School of Allied Health, LaTrobe University, Melbourne, Victoria, Australia"},{"name":"Department of Physiotherapy, Alfred Health, Melbourne, Victoria, Australia"},{"name":"Institute for Breathing and Sleep, Bowen Centre, Austin Hospital, Heidelberg, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kylie","family":"Hill","sequence":"additional","affiliation":[{"name":"School of Physiotherapy and Exercise Science, Faculty of Health Sciences, Curtin University, Perth, Western Australia, Australia"},{"name":"Institute for Respiratory Health, Hospital Ave, Nedlands, Western Australia, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Norman","family":"Morris","sequence":"additional","affiliation":[{"name":"School of Allied Health Sciences and Menzies Health Institute, Griffith University, Nathan, Queensland, Australia"},{"name":"Allied Health Research Collaborative, The Prince Charles Hospital, Chermside, Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lissa","family":"Spencer","sequence":"additional","affiliation":[{"name":"Allied Health Professorial Unit, Sydney Local Health District, Camperdown, New South Wales, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Catherine","family":"Hill","sequence":"additional","affiliation":[{"name":"Institute for Breathing and Sleep, Bowen Centre, Austin Hospital, Heidelberg, Victoria, Australia"},{"name":"Department of Physiotherapy, Austin Health, Heidelberg, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Annemarie","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Physiotherapy, Alfred Health, Melbourne, Victoria, Australia"},{"name":"Institute for Breathing and Sleep, Bowen Centre, Austin Hospital, Heidelberg, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Helen","family":"Seale","sequence":"additional","affiliation":[{"name":"Allied Health Research Collaborative, The Prince Charles Hospital, Chermside, Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nola","family":"Cecins","sequence":"additional","affiliation":[{"name":"Department of Physiotherapy, Sir Charles Gairdner Hospital, Hospital Ave, Nedlands, Western Australia, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christine","family":"McDonald","sequence":"additional","affiliation":[{"name":"Institute for Breathing and Sleep, Bowen Centre, Austin Hospital, Heidelberg, Victoria, Australia"},{"name":"Department of Respiratory and Sleep Medicine, Austin Health, Heidelberg, Victoria, Australia"},{"name":"Department of Medicine, The University of Melbourne, Parkville, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jennifer","family":"Alison","sequence":"additional","affiliation":[{"name":"Discipline of Physiotherapy, Faculty of Health Sciences, The University of Sydney, Lidcombe, New South Wales, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2017,8,30]]},"reference":[{"key":"bibr1-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1159\/000332833"},{"key":"bibr2-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1111\/j.1445-5994.2010.02169.x"},{"key":"bibr3-1479972317729051","doi-asserted-by":"publisher","DOI":"10.4187\/respcare.02321"},{"key":"bibr4-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.00150314"},{"key":"bibr5-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1183\/09031936.00150414"},{"key":"bibr6-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1186\/s12890-016-0186-4"},{"key":"bibr7-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1183\/09041950.005s1693"},{"key":"bibr8-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1136\/thx.54.3.213"},{"key":"bibr9-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1136\/thx.47.12.1019"},{"key":"bibr10-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1249\/00005768-198205000-00012"},{"key":"bibr11-1479972317729051","first-page":"825","volume":"126","author":"Burdon JG","year":"1982","journal-title":"Am Rev Respir Dis"},{"key":"bibr12-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1016\/j.rmed.2012.08.011"},{"key":"bibr13-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1177\/096228029900800204"},{"key":"bibr14-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1081\/COPD-200050655"},{"key":"bibr15-1479972317729051","doi-asserted-by":"publisher","DOI":"10.1177\/1479972311415128"}],"container-title":["Chronic Respiratory 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