{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T15:16:56Z","timestamp":1784647016600,"version":"3.55.0"},"reference-count":31,"publisher":"Public Library of Science (PLoS)","issue":"9","license":[{"start":{"date-parts":[[2022,9,28]],"date-time":"2022-09-28T00:00:00Z","timestamp":1664323200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:sec id=\"sec001\">\n<jats:title>Background<\/jats:title>\n<jats:p>Exercise-based cardiac rehabilitation (CR) is an essential contributor to a successful recovery for elderly cardiac patients. The motivation for physical activity is a psychological parameter seldom described in secondary prevention, and it is plausible that motivation contributes to the differential effect of CR.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec002\">\n<jats:title>Purpose<\/jats:title>\n<jats:p>To investigate if motivation, measured using the behavioural regulation in an exercise questionnaire (BREQ-2), predicts VO<jats:sub>2peak<\/jats:sub> in elderly cardiac patients before and after CR.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec003\">\n<jats:title>Methods<\/jats:title>\n<jats:p>A prospective cohort study of elderly ischemic cardiac patients and patients with valvular disease participating in cardiac rehabilitation was used. Motivation was measured using BREQ-2, which measures five constructs of motivation and a summed score\u2014the relative autonomy index (RAI). VO<jats:sub>2peak<\/jats:sub> was measured before and after CR using a cardiopulmonary exercise test (CPET).<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec004\">\n<jats:title>Results<\/jats:title>\n<jats:p>Two hundred and three patients performed the baseline tests and initiated CR. One hundred and eighty-two completed CR and comprised the follow-up group. The mean VO<jats:sub>2peak<\/jats:sub> was 18 ml\/kg\/min (SD\u00b15.1). VO2peak increased significantly with increasing motivation, 1.02 (.41\u20131.62) ml\/kg\/min pr. SD. Mean improvement from CR was 2.3 ml\/kg\/min (SD\u00b14.3), the equivalent of a 12% increase. A change in VO<jats:sub>2peak<\/jats:sub> after CR was likewise positively associated with increased motivation, .74 (.31\u20131.17) pr. SD.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec005\">\n<jats:title>Conclusion<\/jats:title>\n<jats:p>The level of motivation predicts VO<jats:sub>2peak<\/jats:sub> before CR, and is also able to predict changes in VO<jats:sub>2peak<\/jats:sub> following CR. Motivation measured with the BREQ-2 questionnaire can be applied as a screening tool for elderly cardiac patients before they initiate CR to identify patients with need of specific attention.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0275091","type":"journal-article","created":{"date-parts":[[2022,9,28]],"date-time":"2022-09-28T18:32:46Z","timestamp":1664389966000},"page":"e0275091","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":9,"title":["The motivation for physical activity is a predictor of VO2peak and is a useful parameter when determining the need for cardiac rehabilitation in an elderly cardiac population"],"prefix":"10.1371","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6556-1357","authenticated-orcid":true,"given":"Nicolai","family":"Mikkelsen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5075-0980","authenticated-orcid":true,"given":"Christian Have","family":"Dall","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marianne","family":"Frederiksen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Annette","family":"Holdgaard","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hanne","family":"Rasmusen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eva","family":"Prescott","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2022,9,28]]},"reference":[{"issue":"1","key":"pone.0275091.ref001","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.jacc.2015.10.044","article-title":"Exercise-Based Cardiac Rehabilitation for Coronary Heart Disease: Cochrane Systematic Review and Meta-Analysis","volume":"67","author":"L. 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