期刊
JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY
卷 57, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jelekin.2021.102533
关键词
Motor control; Chronic low back pain; Tracking accuracy; Proprioception; Electromyography
资金
- King Abdulaziz University in Saudi Arabia
This study examined trunk motor control in individuals with chronic non-specific low back pain (LBP) and asymptomatic volunteers using a real-time tracking task. It found that tracking variability at slow speeds was correlated with Fear-Avoidance Beliefs Questionnaire (FABQ) scores in those with LBP, indicating a potential relationship between fear of movement and trunk movement accuracy.
Precision of trunk movement has commonly been examined by testing relocation accuracy rather than evaluating accuracy of tracking dynamic movement. In this study we used a 3-D motion capture system to provide a novel real-time tracking task to assess trunk motor control at varying movement speeds between people with and without chronic non-specific low back pain (LBP). Eleven asymptomatic volunteers and 15 participants with chronic non-specific LBP performed 12 continuous cycles of trunk flexion-extension following real time visual feedback, during which, trunk motion was measured using eight optoelectronic infrared cameras. Significant time differences between the feedback and actual trunk motion were found between groups (P = 0.001). Both groups had similar variability of tracking accuracy when following the feedback (P > 0.05). However, tracking variability at a slow speed correlated (P = 0.03; r = 0.55) with the Fear-Avoidance Beliefs Questionnaire (FABQ) scores in those with LBP. This study shows that both asymptomatic people and individuals with LBP displayed anticipatory behaviour, however, the response of those with LBP was consistently delayed in tracking the visual feedback compared to the asymptomatic group. Additionally, the extent of variability of tracking accuracy over repeated tracking cycles was associated with the degree of fear of movement in people with LBP.
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