Strength Training and Proprioceptive Stimulation on Pain, Function, Quality of Life, Sleep Quality, and Psychosocial Factors in Older Adults With Shoulder Pain

Inclusion Criteria: * People over 60 years of age. * Be able to understand the instructions and answer the questionnaires designed for this study, as well as participate in the established physical tests. * People with rotator cuff-related shoulder pain (RCSRP) of at least 3 months' duration. * Sign informed consent to participate in the study. * Possible medical diagnoses to categorize you as RCSRP: * Subacromial syndrome or subacromial pain syndrome. * Subacromial impingement. * Rotator cuff tendinopathy/tendinitis/tendinosis. * Subdeltoid/subacromial bursitis. * Non-traumatic partial tears of a rotator cuff tendon affecting less than 50% of the tendon thickness. * Mild/moderate intrasubstance rotator cuff tears. Exclusion Criteria: * Complete/massive rotator cuff tears. * Corticosteroid injections within the last 6 weeks. * Recent surgery on that shoulder or planned surgery within the next 3 months. * Bilateral shoulder pain. * Presence of glenohumeral fractures or osteoarthritis confirmed by radiographic examination. * Psychiatric illnesses or central or peripheral neurological disorders that make it difficult to grasp, cooperate, or follow instructions during the procedure. * Individuals with an absolute contraindication to moderate-to-high-intensity physical exercise based on prior medical testing. * Presence of severe difficulties with gait, balance, or functional activity, or hearing or vestibular disorders that prevent the performance of the prescribed exercises. …