Implantable device measured objective daily physical activity as a predictor of long-term allcause mortality and cardiac death in patients with age75years and high risk of sudden cardiac death: A cohort study
To study the relationship between objective daily physical activity (PA), as measured by implantable cardioverter defibrillators (ICDs)/cardiac resynchronization therapy defibrillators (CRTDs), and long-term prognoses in patients with age75 years at high risk of sudden cardiac death (SCD).