This study was planned to investigate the effects of upper extremity low-volume high-intensity interval training (LV-HIIT) on physical and cognitive function in patients with heart failure with preserved ejection fraction(HFpEF).The research was planned as a randomized controlled trial. Patients with clinically stable HFpEF at cardiology clinic will be included in the study. These cases will be randomly divided into two groups: intervention group and control grup. After 8 weeks intervention physical functions before and after treatment; functional exercise capacity, arm exercise capacities , peripheral muscle strength , fatigue cognitive functions; anxiety and depression and fear of movement will be evaluated.