Reducing sedentary behavior improves depressive symptoms among patients with heart failure enrolled in a home-based mobile health app cardiac rehabilitation.

Background: Depressive symptoms are common, worsening heart failure (HF) progression and reducing quality of life. While supervised structured exercise training is effective for managing depressive symptoms, it often demands a substantial time commitment or intensive activity that may discourage participation.

Objective: Evaluate the impacts of reducing sedentary time with short bouts of light physical activities or greater intensity levels on depressive symptoms after HF patients' enrollment in a home-based intervention.