Acceptability of a Text Message-Based Mobile Health Intervention to Promote Physical Activity in Cardiac Rehabilitation Enrollees: A Qualitative Substudy of Participant Perspectives.

"patients with potentially high-risk cardiovascular disease who were deemed unsafe for home physical activity were excluded (full inclusion and exclusion criteria listed in data s1 ).; interview guides were created by a group of investigators with experience in qualitative research and clinical medicine (data s1 ).; data s1 tables s1-s3"

"Disclosures Dr Mishra receives salary support by an American Heart Association grant (grant number 20SFRN35370008). Dr Nallamothu is a principal investigator or coinvestigator on research grants from the National Institutes of Health, Veterans Affairs Health Services Research and Development, and the American Heart Association. He also receives compensation as Editor‐in‐Chief of Circulation: Cardiovascular Quality & Outcomes, a journal of the American Heart Association. Finally, he is a coinventor on US Utility Patent Number US15/356012 (US20170148158A1) titled Automated Analysis of Vasculature in Coronary Angiograms that uses software technology with signal processing and machine learning to automate the reading of coronary angiograms, held by the University of Michigan. The patent is licensed to AngioInsight, Inc., in which Dr Nallamothu holds ownership shares and receives consultancy fees. Dr Golbus receives funding from the National Institutes of Health (L30HL143700) and receives salary support by an American Heart Association grant (grant number 20SFRN35370008). The remaining authors have no disclosure to report."

"Sources of Funding This work was supported by institutional grants at the University of Michigan including Precision Health, MCubed, and Aikens Innovation awards."

"Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT04587882."