Centre of Precision Rehabilitation for Spinal Pain (CPR Spine), School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Physical Therapy, Faculty of Medical Rehabilitation Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.
Department of Sport and Exercise Sciences, Manchester Institute of Sport, Manchester Metropolitan University, Manchester, United Kingdom.
J Electromyogr Kinesiol. 2023 Dec;73:102832. doi: 10.1016/j.jelekin.2023.102832. Epub 2023 Oct 14.
Changes in spinal kinematic variability have been observed in people with chronic non-specific LBP (CNSLBP) during the performance of various repetitive functional tasks. However, the direction of these changes (i.e., less or more kinematic variability) is not consistent. This study aimed to assess differences in kinematic variability of the 3D angular displacement of thoracic and lumbar spinal segments in people with CNSLBP compared to asymptomatic individuals during a repetitive lifting task. Eleven people with CNSLBP and 11 asymptomatic volunteers performed 10 cycles of multi-planar lifting movements while spinal kinematics were recorded. For the three planes of motion, point-by-point standard deviations (SDs) were computed across all cycles of lifting and the average was calculated as a measure of kinematic variability for both segments. People with CNSLBP displayed higher thoracic (F = 8.00, p = 0.010, ηp = 0.286) and lumbar kinematic variability (F = 5.48, p = 0.030, ηp = 0.215) in the sagittal plane. Moreover, group differences were observed in the transversal plane for thoracic (F = 7.62, p = 0.012, ηp = 0.276) and lumbar kinematic variability (F = 5.402, p = 0.031, ηp = 0.213), as well as in the frontal plane for thoracic (F = 7.27, p = 0.014, ηp = 0.267) and lumbar kinematic variability (F = 6.11, p = 0.022, ηp = 0.234), all showing higher variability in those with CNSLBP. A significant main effect of group was not detected (p > 0.05) for spinal range of motion (ROM). Thus, people with CNSLBP completed the lifting task with the same ROM in all three planes of motion as observed for asymptomatic individuals, yet they performed the lifting task with higher spinal kinematic cycle-to-cycle variation.
在进行各种重复性功能任务时，患有慢性非特异性下腰痛（CNSLBP）的人脊柱运动学的可变性发生了变化。然而，这些变化的方向（即更少或更多的运动可变性）并不一致。本研究旨在评估 CNSLBP 患者与无症状个体在重复性举重任务中，3D 角度位移的胸腰椎段运动学可变性的差异。11 名 CNSLBP 患者和 11 名无症状志愿者在进行多平面举重运动时，记录了脊柱运动学。对于三个运动平面，在所有举重周期中计算每个点的标准偏差（SD），并计算平均值作为两个节段运动可变性的度量。CNSLBP 患者在矢状面显示出更高的胸椎（F=8.00，p=0.010，ηp=0.286）和腰椎运动学可变性（F=5.48，p=0.030，ηp=0.215）。此外，在横切平面上，胸椎（F=7.62，p=0.012，ηp=0.276）和腰椎运动学可变性（F=5.402，p=0.031，ηp=0.213）以及在额状面的胸椎（F=7.27，p=0.014，ηp=0.267）和腰椎运动学可变性（F=6.11，p=0.022，ηp=0.234）中也观察到了组间差异，所有这些差异均显示 CNSLBP 患者的可变性更高。没有检测到组间（p>0.05）运动范围（ROM）的显著主效应。因此，与无症状个体相比，患有 CNSLBP 的人在所有三个运动平面上完成举重任务时，ROM 相同，但他们在每个举重周期的脊柱运动学变化更大。
