Print Email Facebook Twitter Fear of movement is not associated with trunk movement variability during gait in patients with low back pain Title Fear of movement is not associated with trunk movement variability during gait in patients with low back pain Author Veeger, Thom T.J. (Leiden University Medical Center) van Trigt, B. (TU Delft Biomechanical Engineering) Hu, Hai (Shanghai Jiao Tong University) Bruijn, Sjoerd M. (Vrije Universiteit Amsterdam) van Dieën, Jaap H. (Vrije Universiteit Amsterdam) Department Biomechanical Engineering Date 2020 Abstract BACKGROUND: Literature describing differences in motor control between low back pain (LBP) patients and healthy controls is very inconsistent, which may be an indication for the existence of subgroups. Pain-related psychological factors might play a role causing these differences. PURPOSE: To examine the relation between fear of movement and variability of kinematics and muscle activation during gait in LBP patients. STUDY DESIGN: Cross-sectional experimental design. PATIENT SAMPLE: Thirty-one Chinese LBP patients. OUTCOME MEASURES: Self-report measures: Visual Analog Score for pain; TAMPA-score; Physiologic measures: electromyography, range of motion. FUNCTIONAL MEASURES: LBP history; the physical load of profession, physical activity. METHODS: Patients were divided in high and low fear of movement groups. Participants walked on a treadmill at four speeds: very slow, slow, preferred and fast. Kinematics of the thorax and the pelvis were recorded, together with the electromyography of five bilateral trunk muscle pairs. Kinematic and electromyography data were analysed in terms of stride-to-stride pattern variability. Factor analysis was applied to assess interdependence of 11 variability measures. To test for differences between groups, a mixed-design multivariate analysis of variance was conducted. RESULTS: Kinematic variability and variability of muscle activation consistently loaded on different factors and thus represented different underlying variables. No significant Group effects on variability of kinematics and muscle activation were found (Hotelling's Trace F=0.237; 0.396, p=.959;.846, respectively). Speed significantly decreased kinematic variability and increased variability in muscle activation (Hotelling's Trace F=8.363; 4.595, p<.0001; <.0001, respectively). No significant interactions between Group and Speed were found (Hotelling's Trace F=0.204; 0.100, p=.762;.963, respectively). CONCLUSIONS: The results of this study do not support the hypothesis that variability in trunk kinematics and trunk muscle activation during gait in LBP patients are associated with fear of movement. Subject ElectromyographyGaitKinematics To reference this document use: http://resolver.tudelft.nl/uuid:e9d7cfae-1ab2-4bae-854c-d466206ac655 DOI https://doi.org/10.1016/j.spinee.2020.07.007 ISSN 1529-9430 Source European Spine Journal, 20 (12), 1986-1994 Part of collection Institutional Repository Document type journal article Rights © 2020 Thom T.J. Veeger, B. van Trigt, Hai Hu, Sjoerd M. Bruijn, Jaap H. van Dieën Files PDF 1_s2.0_S1529943020309736_main.pdf 927.61 KB Close viewer /islandora/object/uuid:e9d7cfae-1ab2-4bae-854c-d466206ac655/datastream/OBJ/view