• Karen E Weiss, Rui Li, Xing Wang, Daron Vandeleur, Sabina Havkins, and Tonya M Palermo.
• Department of Anesthesiology and Pain Medicine, University of Washington.
• Clin J Pain. 2024 Feb 1; 40 (2): 829182-91.

ObjectivesThis study tested performance measures of physical functioning and pain-related psychosocial measures as potential mechanisms of improvements in outcomes following intensive outpatient interdisciplinary pain rehabilitation for adolescents. We hypothesized that improvements in performance measures of physical functioning, fear of pain, pain catastrophizing, and self-efficacy during treatment would be related to improvements in pain, functional disability, and depressive symptoms.MethodsSeventy-seven adolescents, 10 to 18 years old, completed self-report measures before treatment, after the first week, at discharge, and at the 3-month follow-up. Participants completed physical performance measures of physical and exercise capacity and core strength on day 1, after the first week, and at discharge. Linear mixed models were used to examine the association between changes in potential mechanisms and changes in outcomes, adjusting for age, sex, pain duration, and baseline functional disability.ResultsStatistically significant improvement in functional disability, pain, and depressive symptoms was demonstrated across the 4 time points. Improvements were also demonstrated in physical performance measures, fear of pain, pain catastrophizing, and self-efficacy. Improvements in pain catastrophizing predicted improvements in functional disability, pain, and depressive symptoms. Improvements in self-efficacy predicted improvements in all outcome variables except depression. Improvements in physical performance measures predicted improvements in some aspects of functional disability and pain, but not depressive symptoms.DiscussionThis study contributes to the growing literature on the effectiveness of pediatric intensive interdisciplinary pain rehabilitation programs and mechanisms that influence improvements in outcomes, an area that is currently underexplored. Results are important to guide future research and inform clinical practice.Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.

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