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Life sciences · Interventional Study
ClinicalTrials.gov · November 2, 2026
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Interventional Study.
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Registry record from ClinicalTrials.gov (NCT07910812). This is a study registration, not published results. Lead sponsor: University of Lisbon. Recruitment status: RECRUITING. Phase: NA. Study type: INTERVENTIONAL. Enrollment: 64 participants (ESTIMATED). Conditions: Cardiovascular Diseases (CVD), Coronary Disease, Heart Failure, Cardiac Rehabilitation, Sedentary Behaviour. Interventions: BEHAVIORAL: Standard Cardiac Rehabilitation Care; BEHAVIORAL: Tailored behavioural counselling; BEHAVIORAL: Digital prompts. Primary outcome measures: Change in daily sedentary time (h/day) , Baseline, 3 months, 6 months, 12 months. Brief summary: Sedentary behaviour (SB) is an independent cardiovascular risk factor that remains highly prevalent among individuals attending long-term cardiac rehabilitation (CR) programs, despite participation in regular supervised exercise. Although CR provides an ideal setting for promoting healthy lifestyle behaviours, evidence on tailored interventions specifically targeting SB in long-term CR programs remains limited. This randomized controlled trial aims to evaluate the effectiveness of a 6-month tailored behavioural intervention, supported by digital health tools, in reducing SB among adults attending a long-term phase CR program. Participants will be randomly allocated to either an intervention group (IG), receiving standard CR plus individualized behavioural counselling, digital prompts, and educational resources, or a standard care group (SCG) receiving usual CR and educational resources only. The primary outcome is objectively measured daily sedentary time assessed using activPAL4 (h/day). Secondary outcomes include objectively measured physical activity (PA), body composition, cardiorespiratory fitness, muscular strength, health-related quality of life and other behavioural outcomes. Outcomes will be assessed at baseline, 3, 6, and 12 months, according to the specific assessment schedule. The study aims to determine whether integrating a tailored behavioural intervention into routine long-term CR leads to sustained improvements in SB and related health outcomes.