• Susmita Kashikar-Zuck, Staci Thomas, Scott Bonnette, Robert C Gibler, Christopher DiCesare, Andrew Schille, Tessa Hulburt, Matthew S Briggs, Sylvia Ounpuu, Greg D Myer, and FIT Teens Clinical Trial Study Group.
• Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio; Division of Behavioral Medicine and Clinical Psychology, Cincinnati Children's Hospital, Cincinnati, Ohio. Electronic address: susmita.kashikar-zuck@cchmc.org.
• J Pain. 2024 Sep 1; 25 (9): 104586104586.

UnlabelledPhysical activity avoidance and fear of movement (FOM) is often observed in individuals with chronic musculoskeletal pain, along with difficulties coping with pain. There is little research regarding how FOM may also relate to reduced physical strength and altered movement patterns that may perpetuate a cycle of pain, FOM, and disability. The objective of this observational study was to compare how adolescents with juvenile fibromyalgia (JFM) exhibiting high versus low FOM (Tampa Scale of Kinesiophobia-11) differed on patient-reported measures of pain, fatigue, catastrophizing and pain interference, and performance-based measures of strength, postural control, and biomechanical function. Participants were youth with JFM (N = 135, Meanage = 15.6 years, 88.9% female) enrolled in an ongoing clinical trial who completed self-report questionnaires and standardized tests, including knee and hip strength, the Star Excursion Balance Test, and the Drop Vertical Jump (with 3 dimensional motion capture). Participants were categorized into Low, Medium, and High FOM groups based on Tampa Scale of Kinesiophobia-11 tertile scores. Relative to the Low FOM group, the High FOM group reported significantly greater fatigue, pain interference and catastrophizing, as well as reduced dominant leg knee strength. Additionally, those with high FOM showed altered lower-extremity movement patterns. This preliminary study highlights the importance of combining self-reported measures of symptoms and functioning with physical assessments to gain a more comprehensive view of the impact of FOM in patients with chronic musculoskeletal pain. The results could inform the development of more precise interventions to reduce FOM using a combination of behavioral and exercise-based interventions.PerspectiveThe results of this study demonstrate the association between FOM, fatigue and pain interference in adolescents with JFM, as well as preliminary evidence for altered movement patterns in that may predispose them to further pain/injury and activity avoidance.Gov RegistrationNCT03268421.Copyright © 2024 United States Association for the Study of Pain, Inc. Published by Elsevier Inc. All rights reserved.

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