Kim Soo-Byeong, Kim Jung-Yoon, Park Sun-Woo, Lee Na-Ra, Lee Seung-Wook, Kim Young-Ho, Lee Yong-Heum
Eastern & Western Biomedical System Laboratory, Dept. of Biomedical Engineering, Yonsei University, Wonju, South Korea.
Acupunct Electrother Res. 2012;37(4):247-61. doi: 10.3727/036012912x13831831256294.
The aim of this study was to find the non-invasive optimal alternative method for Manual Acupuncture. Existing researches had reported that Transcutaneous Electrical Acupoint Stimulation (TEAS) was an effective treatment method instead of manual acupuncture. In place of the TEAS, we suggested the Pulsed Electromagnetic Fields (PEMFs). Thus, we designed the PEMFs system which can stimulate only an acupoint. There have been no researches which reported therapeutic effect when stimulating at an identical acupoint by TEAS and PEMFs. Hence, this study investigated the therapeutic effect on the muscle fatigue after the strenuous knee extension/flexion exercise by two stimulations. We selected the stimulation method of both TEAS and PEMFs by using 2Hz biphasic rectangular wave pulse and pulse width 0.2ms. The magnetic flux was the 30.92mT (309.2gauss) at 2 Hz. The electromyogram (EMG) and the maximal voluntary contraction (MVC) at rectus femoris were measured. The Median Frequency (MF) at TEAS group was significantly effective at 6 minutes (p=0.499). The PEMFs group was recovered to the MF rapidly after 4 minutes (p=0.166). The results of the peak torque indicated that both non-stimulation group and TEAS group did not recover to the peak torque at pre-exercise during the recovery period (p<0.05). In contrast, the significant treatment effect of PEMFs group was found after 14 minutes (p=0.135). The results of this study demonstrated that PEMFs were better than TEAS as a non-invasive method to replace the manual acupuncture.
本研究的目的是寻找一种用于手动针刺的非侵入性最佳替代方法。现有研究报告称,经皮穴位电刺激(TEAS)是一种有效的治疗方法,可替代手动针刺。我们建议用脉冲电磁场(PEMFs)来替代TEAS。因此,我们设计了一种仅能刺激穴位的PEMFs系统。目前尚无研究报告TEAS和PEMFs在相同穴位刺激时的治疗效果。因此,本研究调查了两种刺激方式对剧烈伸膝/屈膝运动后肌肉疲劳的治疗效果。我们使用2Hz双相矩形波脉冲和0.2ms的脉冲宽度来选择TEAS和PEMFs的刺激方式。在2Hz时,磁通量为30.92mT(309.2高斯)。测量了股直肌的肌电图(EMG)和最大自主收缩(MVC)。TEAS组的中位频率(MF)在6分钟时显著有效(p = 0.499)。PEMFs组在4分钟后迅速恢复到MF(p = 0.166)。峰值扭矩的结果表明,在恢复期间,非刺激组和TEAS组均未恢复到运动前的峰值扭矩(p<0.05)。相比之下,PEMFs组在14分钟后发现有显著的治疗效果(p = 0.135)。本研究结果表明,作为一种替代手动针刺的非侵入性方法,PEMFs比TEAS更好。
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