Clinical Research Directory

Inclusion Criteria:Being between the ages of 20 and 50 * Having a diagnosis of rotator cuff tendinopathy based on medical history, physical examination, and MRI findings * Having full shoulder joint range of motion * Absence of upper extremity deformity that would interfere with ultrasonographic measurement * Having provided written informed consent Exclusion Criteria:Glenohumeral instability * Adhesive capsulitis (stages 2-3) * Radiographic evidence of calcific tendinitis or significant bursitis •Cervical radiculopathy Upper extremity or spinal deformities * History of surgery involving the shoulder, cervical spine, or back * Neurological or systemic disease (rheumatological, metabolic, etc.) * Physical therapy for the shoulder, neck, or back region within the last 6 months * Corticosteroid injection into the affected shoulder within the last 6 months * Exposure to intensive repetitive shoulder movements in sports or occupational activities * Use of medications that could affect exercise performance or metabolic response