{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,18]],"date-time":"2025-11-18T09:32:47Z","timestamp":1763458367725},"reference-count":41,"publisher":"MJS Publishing, Medical Journals Sweden AB","license":[{"start":{"date-parts":[[2024,6,19]],"date-time":"2024-06-19T00:00:00Z","timestamp":1718755200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JRM"],"abstract":"<jats:p>Objective: A cardiopulmonary exercise test provides information regarding appropriate exercise intensity, but there have been few reports on its use in patients over 80 years of age.\nDesign: Retrospective observational study.\nPatients: A total of 511 cardiovascular disease patients who performed a cardiopulmonary exercise test from February 2011 to January 2020 were investigated.\nMethods: Patients were stratified according to age: &lt;\u200970 years, 70\u201379 years, and \u2265\u200980 years, and the results of the cardiopulmonary exercise test up to anaerobic threshold were compared.\nResults: Patients in the &lt;\u200970 age bracket showed higher oxygen consumption, carbon dioxide output, and ventilatory volume and lower ventilation equivalents per oxygen consumption and carbon dioxide output in all time periods. However, there were no significant differences in these parameters or the work rate (70\u201379 years of age: 41.4\u2009\u00b1\u200911.7 watts, vs \u2265\u200980 years: 42.2\u2009\u00b1\u200910.9 watts, p\u2009=\u20090.95) or oxygen consumption per body weight at anaerobic threshold (12.2\u2009\u00b1\u20090.2 ml\/min\/kg, vs 12.1\u2009\u00b1\u20090.4 ml\/min\/kg, p\u2009=\u20090.97) between the 70\u201379 year age bracket and the \u2265\u2009\u200980 year age bracket.\nConclusion: Even for cardiovascular disease patients age \u2265\u200980 years, a cardiopulmonary exercise test up to anaerobic threshold can supply useful information for guiding cardiac rehabilitation.<\/jats:p>","DOI":"10.2340\/jrm.v56.19453","type":"journal-article","created":{"date-parts":[[2024,6,20]],"date-time":"2024-06-20T05:29:39Z","timestamp":1718861379000},"page":"jrm19453","source":"Crossref","is-referenced-by-count":1,"title":["Usefulness of the cardiopulmonary exercise test up to the anaerobic threshold for pati-ents aged \u2265\u200980 years with cardiovascular disease on cardiac rehabilitation"],"prefix":"10.2340","volume":"56","author":[{"given":"Yuiko","family":"Yano","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasunori","family":"Suematsu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takuro","family":"Matsuda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kai","family":"Tsukahara","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miki","family":"Shirosaki","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sakiko","family":"Matsuo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kanta","family":"Fujimi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shin-ichiro","family":"Miura","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1183","published-online":{"date-parts":[[2024,6,19]]},"reference":[{"key":"66106","doi-asserted-by":"crossref","unstructured":"Isobe M. 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