Understanding the flexion-relaxation phenomenon in non-specific chronic low back pain patients throught immersive virtual reality feedback approach

Article Article scientifique Article Understanding the flexion-relaxation phenomenon in non-specific chronic low back pain patients throught immersive virtual reality feedback approach eng 2024-07-10 2024-07-10 author Rose-Dulcina Kevin 0000-0002-8698-3268 Laboratory of Kinesiology, Geneva University Hospitals and University of Geneva, Geneva, Switzerland. kevin.rose-dulcina@hug.ch. 833620 author Dubessy Margaux Campus Biotech, Geneva, Switzerland. 916898 author Armand Stéphane 0000-0001-9144-4982 Laboratory of Kinesiology, Geneva University Hospitals and University of Geneva, Geneva, Switzerland. 636265 Département de chirurgie (CHIRU) author Genevay Stéphane 0000-0003-4752-3186 Division of Rheumatology, Department of Medecine, Geneva University Hospitals, Geneva, Switzerland. 37330 Département de médecine (DEMED) 15936 10.1038/s41598-024-65983-5 38987311 2045-2322 PMC11236989 https://www.nature.com/articles/s41598-024-65983-5 The flexion-relaxation phenomenon (FRP) is frequently absent among non-specific chronic low back pain (NSCLBP) patients. However, it is unknown whether this absence is intrinsic to their pathology or merely a consequence of reduced trunk flexion. Immersive virtual reality (IVR) can create a patient avatar whose range of motion can be modulated to differ from the real movement. The present study enrolled 15 NSCLBP patients and 15 asymptomatic participants with similar characteristics to disentangle the relationship between range of motion and the FRP in NSCLBP using IVR. Trunk kinematics and lumbar muscle electromyography were assessed. The IVR environment was combined with a motion capture system to create avatars that moved like each participant. The IVR display showed a closed room and a mirror reflecting the subject's avatar with a target line to be reached by trunk flexion. The avatar's trunk movements were modulated from reality, leading the participants to flex their trunk more than their voluntary maximum trunk flexion. Under IVR conditions, NSCLBP patients significantly increased their trunk flexion angle, which was coupled with a significant improvement in the FRP. The absence of the FRP among the NSCLBP population appeared to be primarily related to reduced trunk flexion. Humans Low Back Pain / physiopathology Female Male Adult Range of Motion, Articular / physiology Biomechanical Phenomena Virtual Reality Electromyography Middle Aged Chronic Pain / physiopathology Torso / physiopathology Torso / physiology Movement / physiology Dewey 616 Hôpitaux Universitaires de Genève PRD 6-2020-I 56 Département de médecine 221 false 900 Laboratoire de cinésiologie 943 Scientific reports 14 1 d330c83f-4411-420b-934a-e426a4cca167 Article (Published version) Public Article_scientifique_from_unpaywall.pdf 1274100 application/pdf CC BY-4.0 66dc8a1712781a44ce42963667fa1e4e72502406fcc69b75bcfc2ce2a7d6a3c1 44dde530-2f18-4a6a-b3a8-09a6bec681d6 Erratum Public s41598-024-71957-4.pdf 730442 application/pdf CC BY-4.0 a332d44a25c605f6d98050975d21f07469e9f8e8b0951446fda34e48784f3b27 dabc94d6-53c8-4281-a602-320bfd3a78f9 Appendix Public 41598_2024_65983_MOESM1_ESM.docx 67819 application/vnd.openxmlformats-officedocument.wordprocessingml.document 35a3395c0f27b714a85d6a5719853cc7ec1160664a180689173e89e711504f65 bd3e494c-4432-41fa-8fd9-d10b1705445f Appendix Public 41598_2024_65983_MOESM2_ESM.docx 24857 application/vnd.openxmlformats-officedocument.wordprocessingml.document a666146cfaa78ed511eaae103da9501729d49df24355ac33333d66102b38f786 fb256536-413f-4fe0-a7c7-4a934c010393 Appendix Public 41598_2024_65983_MOESM3_ESM.docx 31418 application/vnd.openxmlformats-officedocument.wordprocessingml.document 1f6c3f8abe72a829f23bbc40cc1a62aa4b98531974776a2965659c1a4e1fa715 The original version of this Article contained an error in the name of Kevin Rose-Dulcina, Stéphane Armand, and Stéphane Genevay, which were incorrectly given as Rose-Dulcina Kevin, Armand Stéphane, and Genevay Stéphane. The original Article has been corrected. 10.1038/s41598-024-71957-4 39251856 openAccess Faculté de médecine / Section de médecine clinique / Département de médecine

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Understanding the flexion-relaxation phenomenon in non-specific chronic low back pain patients throught immersive virtual reality feedback approach	Scientific reports			2024	60	239

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