School of Physical and Occupational Therapy, McGill University, Quebec, Canada; Centre for Interdisciplinary Research in Rehabilitation, Lethbridge-Layton-Mackay Rehabilitation Centre, Quebec, Canada.
School of Physical and Occupational Therapy, McGill University, Quebec, Canada; Centre for Interdisciplinary Research in Rehabilitation, Lethbridge-Layton-Mackay Rehabilitation Centre, Quebec, Canada.
J Electromyogr Kinesiol. 2024 Oct;78:102923. doi: 10.1016/j.jelekin.2024.102923. Epub 2024 Aug 21.
People with low back pain (LBP) exhibit altered coordination, possibly indicating guarded movement. The connection between these changes and pain-related threat remains unclear. We aimed to determine if pain-related threat was related to spinal coordination and variability, during a lifting task, in people with chronic LBP.
Participants were adults with chronic LBP (n = 47). Upper lumbar, lower lumbar, and hipkinematics were measured during 10crate lifting/lowering repetitions. Coordination and variability of the Hip-Lower Lumbar, and Lower Lumbar-Upper Lumbar joint pairs were calculated. Pain-related threat was measured using the Tampa Scale for Kinesiophobia, the Pain Catastrophizing Scale, and task-specific fear. Linear regression analyses tested the relationship between pain-related threat and coordination.
Adding catastrophizing to our base model (sex) explained variance in Hip-Lower lumbar coordination (r change = 0.125, p = 0.013). General and task specific measures of fear were unrelated to coordination and variability at both joint pairs (r change < 0.064, p > 0.05). Exploratory t-tests revealed subgroups aligned with phenotypes of "tight" and "loose" control, where "tight" control was characterized by greater catastrophizing and disability.
Pain catastrophizing, but not measures of fear, was related to more in-phase ("tight") Hip-Lower Lumbar coordination during lifting/lowering. Considering this relationship based on subgroups may add clarity.
腰痛（LBP）患者表现出协调改变，可能表明运动受到保护。这些变化与疼痛相关威胁之间的联系尚不清楚。我们旨在确定慢性 LBP 患者在举起重物任务中，疼痛相关威胁是否与脊柱协调和可变性有关。
参与者为患有慢性 LBP 的成年人（n=47）。在 10 次提/放箱子重复过程中测量上腰椎、下腰椎和髋关节运动学。计算髋关节-下腰椎和下腰椎-上腰椎关节对的协调和可变性。使用 Tampa 运动恐惧量表、疼痛灾难化量表和特定任务恐惧来测量疼痛相关威胁。线性回归分析测试疼痛相关威胁与协调之间的关系。
在我们的基本模型（性别）中加入灾难化可以解释髋关节-下腰椎协调的变异性（r 变化=0.125，p=0.013）。一般和特定任务的恐惧测量与两个关节对的协调和可变性无关（r 变化<0.064，p>0.05）。探索性 t 检验揭示了与“紧”和“松”控制表型一致的亚组，其中“紧”控制表现为更大的灾难化和残疾。
疼痛灾难化，而不是恐惧测量，与举起重物时髋关节-下腰椎更同步（“紧”）的协调有关。根据亚组考虑这种关系可能会更清楚。
