针刺手法对健康志愿者穴区表面肌电图的影响

Effect of Different Acupuncture Manipulations on IEMG in Healthy Volunteers

目的:观察4种不同针刺手法(提插法、捻转法、烧山火、透天凉)对穴位附近区域表面肌电信号的影响。方法:招募符合纳入标准的60名志愿者,根据随机数表随机分为两组。单式手法组志愿者的左上肢采用提插法针刺,右上肢采用捻转法针刺,均平补平泻;复式手法组志愿者的左上肢采用烧山火手法,右上肢采用透天凉手法。4种针刺手法均在侠白穴施针,使用Actiwave肌电图仪采集实验过程中受试者表面肌电信号,并对针刺前2 min、行针2 min、留针2 min和出针2 min这4个时间段的表面肌电图积分肌电值信号(IEMG)和中位频率(MF)变化进行统计分析。结果:4种针刺手法组在行针2 min内的IEMG值与作为对照的针刺前2 min比较,结果有统计学意义,且在行针2 min内的IEMG显著高于其他时间段。烧山火组行针2 min时的IEMG值与提插组比较有统计学意义。4种针刺手法各针刺组之间及各时间段之间的MF值比较均没有统计学意义。结论:不同的针刺手法对健康志愿者表面肌电图积分肌电值存在不同的影响,且行针刺激均能有效提高IEMG值,但没有持续增加静止肌张力的后效应;较之于单纯提插法及轻插重提法,重插轻提的行针手法更能有效地提高静止肌张力。4种针刺方法对肌肉基本不产生肌肉疲劳效应。

Objective：To observe the effect of four different acupuncture manipulations around acupuncture points on EMG. Methods：We recruited 60 volunteers who met the inclusion criteria. The subjects were divided into two groups according to the random number table. Volunteers in the simple technique group received lifting - thrusting needling on left upper extremity and twirling - rotating needling on the right ; while volunteers in the multiple technique group received heat -producing needling on the left upper extremity and cool - needling on the other. Four kinds of acupuncture manipulations were all operated at Xiabai point, with producing Actiwave EMG electromyogram attached to collect EMG of subjects during the process of experiments. Integrated electro- myogram （IEMG） and mean frequency （MF） in 4 time periods （2min before needling, 2min during needling, 2min retaining the needle, 2min after needling） were included in statistical analysis. Results：There were sta- tistically significant differences in IEMG before and tions. The IEMG of 2min during needling during needling between 4 different acupuncture manipula- was significant higher than other time periods ~ There was a statistically significant difference in IEMG of 2min during needling between lifting - thrusting needling and Heat - producing needling. There were no statistically significant differences in MF between different groups or time periods. Con- elusion： Different acupuncture manipulations have different effects on EMGin healthy volunteers. All of the ma- nipulations can increase the value of IEMG but none of them has an after - effect on increasing rest muscular tension. Compared with simple lifting- thrusting needling and quick -inserting- and -slow -lifting n slow - inserting - and- slow - lifting needling is more effective for increasing the rest muscular tension. the four acupuncture manipulations can induce the muscle fatigue effect.