Objectives: The aim of this feasibility randomized controlled trial (RCT) study is to investigate whether the theoretically informed telehealth intervention involving the HEARTS Technical Package and the use of an activity monitor to increase physical activity level post-stroke is feasible and to estimate the parameters for conducting a fully powered RCT.

Design: A Phase 1 feasibility RCT study with blinded assessment will assign eligible participants to experimental or control group. Participants in both groups will undergo a theoretically informed telehealth intervention based on the HEARTS technical package (a face-to-face session and telephone call follow-up). The experimental group will have additional use of the Mi Band 7® Smartwatch activity monitor. For both groups, the intervention will last for 12 weeks. The feasibility outcomes will be identified considering the different phases of conducting the study. A trained researcher, blinded to the group allocation, will collect the sociodemographic, anthropometric, and clinical outcomes, in a university laboratory setting. Study Outcomes: Feasibility of recruitment, intervention, and measurement, and clinical outcomes.

Conclusions: Results from this feasibility RCT study will inform on the design and sample required for a fully powered RCT with a similar aim.