The Effect of a Dual-Task Technique-Based Exercise Program on Clinical Outcomes in Rotator Cuff Related Shoulder Pain

The aim of this clinical trial is to investigate the effects of a dual-task-based exercise program on clinical outcomes in individuals with rotator cuff-related shoulder pain. The study will evaluate the effects of a dual-task exercise approach, in which physical exercises are performed concurrently with cognitive tasks, on pain, functional status, pain catastrophizing and kinesiophobia. These results will be compared with those of a standard shoulder rehabilitation program. The main questions this study aims to answer are: * Is there a difference in pain levels between individuals with rotator cuff-related shoulder pain who participate in a dual-task-based exercise program and those who participate in a standard exercise program? * Is there a difference between these two exercise approaches in terms of shoulder function and psychosocial factors? Participants will: * Participate in either a dual-task-based shoulder exercise program or a standard shoulder exercise program twice per week for 6 weeks. * Undergo clinical assessments at baseline, at week 6, and at week 12.