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Effect of Increased Lumbar Lordosis on Lumbar Multifidus and Longissimus Thoracis Activation During Quadruped Exercise in Patients With Chronic Low Back Pain: An EMG Study.
Journal of Applied Biomechanics ( IF 1.4 ) Pub Date : 2020-09-22 , DOI: 10.1123/jab.2020-0040
Jayshree Shah 1 , Tarushi Tanwar 1 , Iram Iram 1 , Mosab Aldabbas 1 , Zubia Veqar 1
Affiliation  

The objective was to investigate the electromyographic activity of the lumbar multifidus (MF) muscle and longissimus thoracis muscle, along with their activity ratio (MF longissimus thoracis ratio), during quadruped stabilization exercise performed with neutral posture and with increased lumbar lordosis in patients with chronic low back pain (CLBP). A total of 23 patients with CLBP (12 females and 11 males) were recruited based on inclusion and exclusion criterion. Each patient performed 4 exercises in random order, with surface electromyography electrodes and an electrogoniometer attached. A cross-sectional study design was used to measure the amplitude of muscle activation (as a percentage of maximum voluntary contraction) in each patient across the 2 muscles (MF and longissimus thoracis) during quadruped stabilization exercise with neutral posture and with increased lumbar lordosis. A 2-way analysis of variance was conducted, which demonstrated a statistically significant increase in the recruitment of MF with increased lumbar lordosis in patients with CLBP during quadruped exercise. An increase of 9.7% and 16.9% maximum voluntary contraction in MF electromyographic activity was observed in lumbar lordosis posture during the quadruped leg raise and quadruped leg-arm raise exercise, respectively (P < .01), when compared to the neutral posture. The increased recruitment of MF with lumbar lordosis in the quadruped position has strong implications in the assessment and management of patients with CLBP.



中文翻译:

慢性腰痛患者四足运动期间腰椎前凸增加对腰椎多裂肌和胸最长肌激活的影响:一项肌电图研究。

目的是研究慢性病患者在中立姿势和腰椎前凸增加的情况下进行四足稳定运动时,腰多裂肌 (MF) 和胸最长肌的肌电活动及其活动比(MF 胸最长肌比)。腰痛(CLBP)。根据纳入和排除标准,总共招募了 23 名 CLBP 患者(12 名女性和 11 名男性)。每个患者随机进行 4 次练习,并附有表面肌电图电极和电测角仪。采用横断面研究设计来测量每位患者在中立姿势和腰椎前凸增加的四足稳定运动期间 2 块肌肉(MF 和胸最长肌)的肌肉激活幅度(作为最大自主收缩的百分比)。进行了双因素方差分析,结果表明,CLBP 患者在四足运动期间,随着腰椎前凸的增加,MF 的募集也出现统计学上显着的增加。 与中立姿势相比,在四足腿抬高和四足腿臂抬高运动中,腰椎前凸姿势下的 MF 肌电活动最大自主收缩分别增加了 9.7% 和 16.9% ( P < .01) 四足位置腰椎前凸时 MF 募集的增加对 CLBP 患者的评估和管理具有重要意义。

更新日期:2020-11-21
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