Czaprowski Dariusz, Kolwicz Aleksandra, Afeltowicz Anna, Pawłowska Paulina, Oleksy Lukasz
Department of Rehabilitation, Józef Piƚsudski University of Physical Education, Warsaw, Poland.
Department of Physiotherapy, Józef Rusiecki University College, Olsztyn, Poland.
J Back Musculoskelet Rehabil. 2015;28(4):827-32. doi: 10.3233/BMR-150590.
The surface electromyography (sEMG), by evaluating the paraspinal muscle activity, may be used for diagnosis and evaluation of rehabilitation effectiveness patients with low back pain.
The purpose of the study was to determine the intra- and inter-session reliability of the measurement of the activity of the lumbar erector spinae (LES) activity (extension-flexion ratio).
The study included 21 asymptomatic subjects, aged 14 to 27 years, mean 23.7 ± 2.9. The LES muscle activity was assessed with using of the sEMG during forward trunk flexion and extension by two examiners. Based on the quotient of the LES muscle activity obtained during four concentric and eccentric tasks the extension-flexion ratio was calculated.
The measurements displayed excellent or fair-to-good reliability (intraclass correlation coefficient ranged from 0.90 to 0.68). The typical error and coefficient of variations, ranged from 0.34 to 0.58, and from 13.7 to 21.9, respectively.
The measurement of the extension-flexion ratio performed with the use of sEMG shows high level of intra- and inter-session reliability, suggesting that this parameter is a reliable tool in evaluation of the lumbar paraspinal muscles activity. However, the level of typical error should be taken into account.
表面肌电图（sEMG）通过评估椎旁肌活动，可用于诊断和评估腰痛患者的康复效果。
本研究的目的是确定测量腰竖脊肌（LES）活动（伸展-屈曲比率）在组内和组间的可靠性。
本研究纳入21名无症状受试者，年龄在14至27岁之间，平均年龄为23.7±2.9岁。两名检查者在躯干前屈和伸展过程中使用sEMG评估LES肌肉活动。根据在四个向心和离心任务中获得的LES肌肉活动商计算伸展-屈曲比率。
测量显示出极好或良好至中等的可靠性（组内相关系数范围为0.90至0.68）。典型误差和变异系数分别为0.34至0.58和13.7至21.9。
使用sEMG测量伸展-屈曲比率显示出较高的组内和组间可靠性，表明该参数是评估腰段椎旁肌活动的可靠工具。然而，应考虑典型误差的水平。
