Trial reportPloS one2026
Understanding participants' experiences of a behaviour change intervention within cardiac rehabilitation: A nested process evaluation within the STRENGTH randomised controlled trial.
Trial report in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05705310 (The STRENGTH Study), which is not on this map. Not yet cited in PubMed.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
The STRENGTH Study: Self-management and Theory-based Rehabilitation Encouraging New Gateways to Healthy-Hearts
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe STRENGTH (Self-management and Theory-based Rehabilitation Encouraging New Gateways to Healthy-Hearts) study evaluated a behaviour change intervention embedded within cardiac rehabilitation for individuals with coronary heart disease. This manuscript reports the process evaluation, which aimed to explore participants' experiences of physical activity, barriers and facilitators to maintaining physical activity, and contextual and process-related factors influencing engagement with the intervention.
methodsA process evaluation was nested within a two-arm cluster randomised controlled trial. Semi-structured interviews were conducted with participants from both intervention and control groups, focus groups were conducted with intervention participants. Thematic analysis examined factors influencing physical activity maintenance, including context, implementation, mechanisms of impact and perceived outcomes. Quantitative procedures measured intervention fidelity through attendance records and participant diaries.
resultsBoth groups highlighted environmental, social, and personal factors influencing participation in cardiac rehabilitation, such as social support, professional oversight, and structured programming. Trainers and peer interactions were valued for motivation and perceived safety. The intervention group reported additional facilitators, including tailored support, external accountability, and self-monitoring, which increased awareness and reinforced adherence. Mechanisms of impact included increased awareness of physical activity, greater exercise confidence, and a sense of accomplishment. A perceived lack of exercise confidence may have hindered independent physical activity engagement.
conclusionsWhile behaviour change strategies can enhance engagement in cardiac rehabilitation, their impact on measurable health outcomes remains unclear. Social support, professional oversight, and structured programming appear effective in maintaining physical activity levels, but future interventions should prioritise exercise confidence and education to promote sustained behaviour change.
trial registrationRegistered with ClinicalTrials.gov on 26-01-2023 (ID: NCT05705310).
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