While research and clinical practice have demonstrated the objective benefits of pacemaker use on mortality, morbidity, and quality of life, some patients do not experience the expected level of improvement following device implantation. The purpose of this research was to determine the effects of device implantation on daily living activities, upper extremity functions, peripheral muscle strength, balance problems, fear of movement and quality of life.

Inclusion Criteria:

• At least 3 months have passed since pacemaker implantation and there are no complications in the last pacemaker control,
• Being in NYHA class I-II-III,
• Patients with no coordination problems,
• Volunteering to participate in the research

Exclusion Criteria:

• Patients with a history of shoulder pathologies prior to pacemaker implantation that may restrict movement of the upper limb (conditions such as severe pain around the shoulder, edema or shoulder dislocation that may restrict upper limb movement),
• Patients with a history of shoulder surgery (limitation in range of motion),
• Patients who have had a cerebrovascular event resulting in mastectomy or arm involvement on the affected side,
• Patients with decompensated heart failure,
• Patients with a history of ICD inappropriate shock,
• Those with acute myocardial infarction,
• Patients with malignancy on active treatment, patients with collagen tissue disease receiving systemic steroids,
• Chronic kidney disease patients on dialysis with unstable volume load

Patients who regularly visit for pacemaker check-ups will be invited to participate in the study.