Exercise Activity Intervention With Sensor-Based Engagement in Patients With Atrial Fibrillation

Inclusion Criteria: * ≥40years of age * Paroxysmal AF * Electrocardiographic (or equivalent) documentation of AF within 12 months (would need to have evidence of AF after initial post-ablation blanking period if the patient had prior AF ablation) * AF Severity Scale (AFSS) symptom score 13-26 * Self-report weekly moderate-vigorous physical activity (MVPA) 30-120 minutes Exclusion Criteria: * Unable to give consent * ≤90 days from AF ablation, coronary revascularization, heart failure hospitalization * Left ventricular ejection fraction (LVEF) \<50%, moderate to severe stenotic valvular heart disease or severe regurgitant valvular disease or history of mechanical valve replacement, presence of implanted pacemaker or defibrillator system * Labile INR or unable to take anticoagulant despite indication * Life expectancy \< 1 year * Hemodialysis; severe pulmonary or liver disease * Musculoskeletal, balance/gait issues, severe peripheral vascular disease, or neuropathy or other neurologic conditions limiting exercise * Self-report MVPA \<30 minutes * Upon initial screening, if the participant's baseline FitBit-measured MVPA ≥180 minutes/week (despite self-report range of 30-120 minutes), the participant will be further excluded.