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Physical activity is a core component of CR; however, studies show that participants remain largely sedentary. Sedentary behaviour is an independent risk factor for all-cause mortality. Strategies to encourage sedentary behaviour change are needed. This study will explore the effectiveness and costs of a smartphone application (Vire) and an individualised online behaviour change program (ToDo-CR) in reducing sedentary behaviour, all-cause hospital admissions and emergency department visits over 12\u2009months after commencing CR.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods and analysis<\/jats:title>\n                    <jats:p>A multicentre, assessor-blind parallel randomised controlled trial will be conducted with 144 participants (18+ years). Participants will be recruited from three phase-II CR centres. They will be assessed on admission to CR and randomly assigned (1:1) to one of two groups: CR plus the ToDo-CR 6-month programme or usual care CR. Both groups will be re-assessed at 6 months and 12\u2009months for the primary outcome of all-cause hospital admissions and presentations to the emergency department. Accelerometer-measured changes in sedentary behaviour and physical activity will also be assessed. Logistic regression models will be used for the primary outcome of hospital admissions and emergency department visits. Methods for repeated measures analysis will be used for all other outcomes. A cost-effectiveness analysis will be conducted to evaluate the effects of the intervention on the rates of hospital admissions and emergency department visits within the 12\u2009months post commencing CR.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Ethics and dissemination<\/jats:title>\n                    <jats:p>This study received ethical approval from the Australian Capital Territory Health (2019.ETH.00162), Calvary Public Hospital Bruce (20\u20132019) and the University of Canberra (HREC-2325) Human Research Ethics Committees (HREC). Results will be disseminated through peer-reviewed academic journals. Results will be made available to participants on request.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Trial registration number<\/jats:title>\n                    <jats:p>ACTRN12619001223123.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2020-040479","type":"journal-article","created":{"date-parts":[[2020,12,16]],"date-time":"2020-12-16T18:30:37Z","timestamp":1608143437000},"page":"e040479","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":9,"title":["A smartphone app for sedentary behaviour change in cardiac rehabilitation and the effect on hospital admissions: the ToDo-CR randomised controlled trial study protocol"],"prefix":"10.1136","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5965-7101","authenticated-orcid":false,"given":"Kacie","family":"Patterson","sequence":"first","affiliation":[{"name":"Health Research Institute, Faculty of Health, University of Canberra, Canberra, Australian Capital Territory, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rachel","family":"Davey","sequence":"additional","affiliation":[{"name":"Health Research Institute, Faculty of Health, University of Canberra, Canberra, Australian Capital Territory, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard","family":"Keegan","sequence":"additional","affiliation":[{"name":"Research Institute for Sports and Exercise (UCRISE), Faculty of Health, University of Canberra, Bruce, Canberra, Australian Capital Territory, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6723-0316","authenticated-orcid":false,"given":"Theophile","family":"Niyonsenga","sequence":"additional","affiliation":[{"name":"Health Research Institute, Faculty of Health, University of Canberra, Canberra, Australian Capital Territory, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Itismita","family":"Mohanty","sequence":"additional","affiliation":[{"name":"Health Research Institute, Faculty of Health, University of Canberra, Canberra, Australian Capital Territory, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sander","family":"van Berlo","sequence":"additional","affiliation":[{"name":"Onmi B.V, Eindhoven, Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicole","family":"Freene","sequence":"additional","affiliation":[{"name":"Health Research Institute, Faculty of Health, University of Canberra, Canberra, Australian Capital Territory, Australia"},{"name":"Physiotherapy, Faculty of Health, University of Canberra, Canberra, Australian Capital Territory, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2020,12,15]]},"reference":[{"key":"2025121408252043000_10.12.e040479.1","unstructured":"Australian Institute of Health and Welfare . 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