PURPOSE: The aim of the study was to assess the effectiveness of a group intervention in painful shoulder. DESIGN: This was a two-arm controlled clinical trial with a 5-wk follow-up and 1:1 allocation ratio with pretreatment and posttreatment assessments in a Spanish hospital in 2015 to 2016. This study comprised 74 patients with nontraumatic, inoperable painful shoulder. Patients were randomized into two groups: (1) in intervention, patients underwent group rehabilitation exercises supervised by a physical therapist and (2) in control, patients performed the same exercises as the intervention group but in their own home. The main variables were the differences preintervention and postintervention between scores on the visual analog scale, Constant-Murley scale, and Disabilities of the Arm, Shoulder and Hand scale. The mean differences in the main variables were compared between the two interventions (t test). Registration code is NCT02541279 (ClinicalTrials.gov). RESULTS: Differences were found in favor of the intervention group: (1) visual analog scale -0.1 (p = 0.723), (2) Constant-Murley 4.1 (p = 0.085), and (3) Disabilities of the Arm, Shoulder and Hand 14.7 (p < 0.001). CONCLUSIONS: Relevant improvements were obtained with our intervention in the Disabilities of the Arm, Shoulder and Hand scale.

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