Raeissadat Seyed Ahmad, Rayegani Seyed Mansoor, Sedighipour Leyla, Bossaghzade Zeynab, Abdollahzadeh Mohamad Hesam, Nikray Rojin, Mollayi Fazeleh
Physical Medicine and Rehabilitation Research Center and Department, Clinical Research Development Center, Shahid Modarres Hospital, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Physical Medicine and Rehabilitation Research Center and Department, Shohadaye Tajrish Hospital, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran,
J Pain Res. 2018 Nov 8;11:2781-2789. doi: 10.2147/JPR.S169613. eCollection 2018.
The aim of this survey was to examine the effect of adding electromyographic biofeedback (EMGBF) to isometric exercise, on pain, function, thickness, and maximal electrical activity in isometric contraction of the vastus medialis oblique (VMO) muscle in patients with knee osteoarthritis (OA).
In this clinical trial, 46 patients with a diagnosis of knee OA were recruited and assigned to two groups. The case group consisted of 23 patients with EMGBF-associated exercise, and the control group was made up of 23 patients with only isometric exercise. Data were gathered via visual analog scale (VAS) score, the Persian version of the Western Ontario and McMaster Universities Osteoarthritis Index and Lequesne questionnaires, ultrasonography of the VMO, and surface electromyography of this muscle at baseline and at the end of the study. Variables were compared before and after the exercise program in each group and between the two groups.
At the end of the study, there were no significant differences between the two groups regarding measured variables. Only the VAS score was significantly less in the case group. Although all assessed parameters, except for VMO muscle thickness, were found to be improved significantly in each group, the degree of change was not significantly different between the two groups, except for VAS score. VMO muscle thickness did not change significantly after exercise therapy in either of the groups.
Isometric exercises accompanied by EMGBF and the same exercises without biofeedback for 2 months both led to significant improvements in pain and function of patients with knee OA. Real EMGBF was not superior to exercise without biofeedback in any of the measured variables, except for VAS score.
本调查旨在研究在等长运动中添加肌电图生物反馈（EMGBF）对膝骨关节炎（OA）患者股内侧斜肌（VMO）等长收缩时的疼痛、功能、厚度及最大电活动的影响。
在这项临床试验中，招募了46例诊断为膝OA的患者并将其分为两组。病例组由23例进行与EMGBF相关运动的患者组成，对照组由23例仅进行等长运动的患者组成。通过视觉模拟量表（VAS）评分、西 Ontario和McMaster大学骨关节炎指数波斯文版以及Lequesne问卷、VMO的超声检查以及该肌肉在基线和研究结束时的表面肌电图收集数据。比较了每组运动计划前后以及两组之间的变量。
在研究结束时，两组在测量变量方面没有显著差异。仅病例组的VAS评分显著更低。尽管发现每组中除VMO肌肉厚度外的所有评估参数均有显著改善，但除VAS评分外，两组之间的变化程度没有显著差异。两组在运动治疗后VMO肌肉厚度均无显著变化。
伴有EMGBF的等长运动和不进行生物反馈的相同运动持续2个月均使膝OA患者的疼痛和功能有显著改善。除VAS评分外，在任何测量变量中，真正的EMGBF并不优于无生物反馈的运动。
