{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T09:02:19Z","timestamp":1779958939928,"version":"3.53.1"},"reference-count":22,"publisher":"Informa UK Limited","license":[{"start":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T00:00:00Z","timestamp":1777593600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["COPD"],"DOI":"10.2147\/copd.s613925","type":"journal-article","created":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T08:05:13Z","timestamp":1779955513000},"page":"1-13","source":"Crossref","is-referenced-by-count":0,"title":["Equivalent of Carbon Dioxide at the Anaerobic Threshold Predicts Acute Exacerbations in Patients with Chronic Obstructive Pulmonary Disease: A Retrospective Cohort Study"],"prefix":"10.2147","volume":"Volume 21","author":[{"given":"Yunxiao","family":"Li","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-7444-931X","authenticated-orcid":true,"given":"Xiaona","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1009-9871","authenticated-orcid":true,"given":"Fang","family":"Lin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xing","family":"Hu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Siqi","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mengmeng","family":"Qiu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianxiong","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ranran","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shan","family":"Nie","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bo","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fugui","family":"Yan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ganggang","family":"Yu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"301","published-online":{"date-parts":[[2026,5]]},"reference":[{"key":"ref1","unstructured":"Global Initiative for Chronic Obstructive Lung Disease. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: 2026 report. Available from: https:\/\/goldcopd.org\/2026-gold-report-and-pocket-guide\/. Accessed March 31, 2026."},{"key":"ref2","doi-asserted-by":"publisher","first-page":"410","DOI":"10.1186\/s12931-024-03033-4","volume":"25","author":"Xu","year":"2024","journal-title":"Respir Res"},{"key":"ref3","doi-asserted-by":"publisher","first-page":"428","DOI":"10.1556\/2060.2025.00704","volume":"112","author":"Poparcea","year":"2025","journal-title":"Physiol Int"},{"key":"ref4","doi-asserted-by":"publisher","first-page":"9","DOI":"10.1186\/s12931-021-01895-6","volume":"23","author":"Glaab","year":"2022","journal-title":"Respir Res"},{"key":"ref5","doi-asserted-by":"publisher","first-page":"1505","DOI":"10.1016\/j.chest.2022.01.021","volume":"161","author":"Stickland","year":"2022","journal-title":"Chest"},{"key":"ref6","doi-asserted-by":"publisher","first-page":"2895","DOI":"10.2147\/COPD.S432841","volume":"18","author":"Behnia","year":"2023","journal-title":"Int J Chron Obstruct Pulmon Dis"},{"key":"ref7","doi-asserted-by":"publisher","first-page":"180101","DOI":"10.1183\/16000617.0101-2018","volume":"28","author":"Radtke","year":"2019","journal-title":"Eur Respir Rev"},{"key":"ref8","volume-title":"Principles of Exercise Testing and Interpretation: Including Pathophysiology and Clinical Applications","year":"2012"},{"key":"ref9","doi-asserted-by":"publisher","first-page":"2301549","DOI":"10.1080\/15412555.2023.2301549","volume":"21","author":"Neder","year":"2024","journal-title":"COPD"},{"key":"ref10","doi-asserted-by":"publisher","first-page":"145","DOI":"10.1097\/MCP.0000000000001146","volume":"31","author":"James","year":"2025","journal-title":"Curr Opin Pulm Med"},{"key":"ref11","doi-asserted-by":"publisher","first-page":"e002976","DOI":"10.1136\/bmjresp-2024-002976","volume":"12","author":"Duong","year":"2025","journal-title":"BMJ Open Respir Res"},{"key":"ref12","doi-asserted-by":"publisher","first-page":"51","DOI":"10.1016\/j.ccm.2013.09.008","volume":"35","author":"O\u2019Donnell","year":"2014","journal-title":"Clin Chest Med"},{"key":"ref13","doi-asserted-by":"publisher","first-page":"141","DOI":"10.1097\/MCP.0000000000001040","volume":"30","author":"Maeda","year":"2024","journal-title":"Curr Opin Pulm Med"},{"key":"ref14","doi-asserted-by":"publisher","first-page":"225","DOI":"10.2147\/COPD.S438893","volume":"19","author":"Daniels","year":"2024","journal-title":"Int J Chron Obstruct Pulmon Dis"},{"key":"ref15","doi-asserted-by":"publisher","first-page":"2259","DOI":"10.2147\/COPD.S466280","volume":"19","author":"Simons","year":"2024","journal-title":"Int J Chron Obstruct Pulmon Dis"},{"key":"ref16","doi-asserted-by":"publisher","first-page":"3362","DOI":"10.1007\/s12325-024-02920-y","volume":"41","author":"Matsunaga","year":"2024","journal-title":"Adv Ther"},{"key":"ref17","doi-asserted-by":"publisher","first-page":"230179","DOI":"10.1183\/20734735.0179-2023","volume":"20","author":"Vaes","year":"2024","journal-title":"Breathe"},{"key":"ref18","doi-asserted-by":"publisher","first-page":"524","DOI":"10.15326\/jcopdf.2024.0507","volume":"11","author":"Wang","year":"2024","journal-title":"Chronic Obstr Pulm Dis"},{"key":"ref19","doi-asserted-by":"publisher","first-page":"204","DOI":"10.1513\/AnnalsATS.202006-722OC","volume":"19","author":"Putcha","year":"2022","journal-title":"Ann Am Thorac Soc"},{"key":"ref20","doi-asserted-by":"publisher","first-page":"943","DOI":"10.1159\/000511022","volume":"99","author":"Kim","year":"2020","journal-title":"Respiration"},{"key":"ref21","doi-asserted-by":"publisher","first-page":"2025","DOI":"10.2147\/COPD.S526194","volume":"20","author":"Hu","year":"2025","journal-title":"Int J Chron Obstruct Pulmon Dis"},{"key":"ref22","doi-asserted-by":"publisher","first-page":"640","DOI":"10.4187\/respcare.11705","volume":"69","author":"Nici","year":"2024","journal-title":"Respir Care"}],"container-title":["International Journal of Chronic Obstructive Pulmonary Disease"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.dovepress.com\/article\/download\/115752","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.dovepress.com\/article\/download\/115752","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T08:05:15Z","timestamp":1779955515000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.dovepress.com\/equivalent-of-carbon-dioxide-at-the-anaerobic-threshold-predicts-acute-peer-reviewed-fulltext-article-COPD"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,5]]},"references-count":22,"URL":"https:\/\/doi.org\/10.2147\/copd.s613925","relation":{},"ISSN":["1178-2005"],"issn-type":[{"value":"1178-2005","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,5]]}}}