Department of Physical Therapy for Musculoskeletal Disorders and its Surgery, Faculty of Physical Therapy, Cairo University, Cairo, Egypt.
Department of Biomechanics, Faculty of Physical Therapy, Cairo University, Cairo, Egypt.
Braz J Phys Ther. 2019 May-Jun;23(3):244-249. doi: 10.1016/j.bjpt.2018.08.004. Epub 2018 Aug 21.
BACKGROUND: Further research on pulsed electromagnetic field (PEMF) effects on the different conditions of low back pain was warranted due to lack of studies in this area. OBJECTIVES: To investigate the effects of pulsed electromagnetic field therapy with 50Hz frequency, with low intensity of 20Gauss compared to conventional non-invasive treatment modalities in patients with chronic non-specific low back pain. METHODS: Design - A prospective, randomized, patient-blinded, controlled trial. Setting - The study was conducted at Outpatient Physiotherapy Clinic in Cairo, Egypt. The study was conducted between May 2015 and September 2016. Participants - Fifty participants with non-specific low back pain enrolled into experimental and control groups. Interventions - The experimental group received the Conventional physical therapy Protocol as well as magnetic field, while the control group received the same Conventional physical therapy and sham electromagnetic field. Both groups received 12 sessions over 4 weeks' period. Outcome measures - Primary outcome measures was pain intensity while the secondary outcome measures were disability and lumbar range of motion - ROM. There were no adverse events occurred during the study. RESULTS: Fifty participants with non-specific low back pain (control group n=25; experimental group n=25) were randomized. There were significant between-group differences in pain scores (mean difference - MD 1.52; 95%CI -0.34 to 3.35), function disability (MD 8.14; 95%CI 6.5 to 9.96), Range of Motion (ROM) of lumbar flexion (MD -1.27; 95%CI -1.09 to -1.45), ROM of lumbar extension (MD -1.1; 95%CI -0.97 to -1.23), ROM of lumbar right side bending (MD 8.2; 95%CI 6.56 to 9.84) and ROM of lumbar left side bending (MD 10.4; 95%CI 8.81 to 11.99) in favour of the experimental group. CONCLUSION: Adding pulsed electromagnetic field to Conventional physical therapy Protocol yields superior clinical improvement in pain, functional disability, and lumbar ROM in patients with non-specific low back pain than Conventional physical therapy alone.
背景：由于缺乏这方面的研究，有必要进一步研究脉冲电磁场（PEMF）对不同腰痛情况的影响。
目的：研究 50Hz 频率、20Gauss 低强度的脉冲电磁场治疗与传统非侵入性治疗方法在慢性非特异性腰痛患者中的疗效比较。
方法：设计-前瞻性、随机、患者盲、对照试验。地点-研究在埃及开罗的门诊物理治疗诊所进行。研究于 2015 年 5 月至 2016 年 9 月进行。参与者-50 名非特异性腰痛患者纳入实验组和对照组。干预措施-实验组接受常规物理治疗方案加磁场，对照组接受相同的常规物理治疗和假电磁场。两组均在 4 周内接受 12 次治疗。结果测量-主要结果测量是疼痛强度，次要结果测量是残疾和腰椎活动范围-ROM。研究过程中没有发生不良事件。
结果：50 名非特异性腰痛患者（对照组 n=25；实验组 n=25）被随机分组。疼痛评分（平均差值 MD 1.52；95%置信区间 -0.34 至 3.35）、功能障碍（MD 8.14；95%置信区间 6.5 至 9.96）、腰椎前屈 ROM（MD -1.27；95%置信区间 -1.09 至 -1.45）、腰椎伸展 ROM（MD -1.1；95%置信区间 -0.97 至 -1.23）、腰椎右侧弯曲 ROM（MD 8.2；95%置信区间 6.56 至 9.84）和腰椎左侧弯曲 ROM（MD 10.4；95%置信区间 8.81 至 11.99）方面，实验组均优于对照组。
结论：与单纯常规物理治疗相比，将脉冲电磁场加入常规物理治疗方案可显著改善非特异性腰痛患者的疼痛、功能障碍和腰椎 ROM。
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