中文摘要：

目的观察不同手法力量下一指禅推法上肢肌电信号特征，找冉手法操作关键技术上肢肌群协同运动方式。方法采集专家组、熟练组和初学组手法肌电信号数据。每位测试者按手法力量分轻、中、重3种类型操作，选择连续稳定的数据采用MyoResearch软件进行分析。结果上肢各测试肌群肌电积分（iEMG）比较有显著差异（P〈0．05）；不同手法力量肌群iEMG比值比较，专家组和熟练组无显著差异（P〉0．05），比值前3位为尺侧腕屈肌群、三角肌、桡侧伸肌群；手法核心主动肌群参与运动方式基本一致。初学组在不同手法力量下iEMG比值前3位肌肉群各不相同，差异较明显。专家组、熟练组和初学组之间协同收缩率比较差异均显著（P〈0．01），初学组协同收缩率最大，专家组协同收缩率最小，且协同收缩率随手法力量增加逐渐下降。6min操作三角肌肉中位频率斜率比较，专家组测试者耐疲劳度较好。结论专家组和熟练组手法肌电信号有共同特征，存在手法操作的核心肌群。上肢核心肌群运动方式具有规律性，并且iEMG比值、中位频率斜率、协同收缩率等指标可作为评价手法持久性、均匀性，以及施力方式是否规范的参考标准。

英文摘要：

Objective TO observe the surface electromyography （sEMG） characteristics of upper limbs during one-finger pushing manipulation under different operating forces, so as to find out the muscle coordination move- ment pattern for key operating technology. Methods sEMG data of performing one-finger pushing manipulation by the expert, skilled and novice groups were collected. The manipulation force was divided into three different types, namely mild, moderate and severe. The continuous, stable data were adopted for analysis on Myo-Re- search software. Results Significant differences were found in the upper limb muscle integrated electromyogra- phy （iEMG） values （P 〈 0.0,5）. Under the three different forces, there were no significant differences in iEMG ratio of muscles between the expert and skilled groups （ P 〉 0.05）, with the flexor carpi ulnaris, deltoid, wrist flexors and extensors ranking the top three of iEMG ratio. The expert and skilled groups had the same core mus- cles in the same movement pattern during their manipulation operation, while the novice group had different core muscles under different forces. There were significant differences in co-contraction ratio among the expert, skilledand novice groups （ P〈0.01 ）. The novice and expert groups had the highest and lowest co-contraction ratio, re- spectively, and the co-contraction ratio was gradually decreased with force increasing. During 6-minute manipula- tion operation, deltoid median frequency（MF） slope of the expert group was declined more slowly than that in the other two groups （ P 〈 0.05 ）, which indicated that the expert group were better at resisting to fatigue. Conclusions The expert and skilled groups have the same sEMG characteristics during one-finger pushing manipulation op- eration with the same core muscles. The movement pattern of upper limb muscles is of regularity. The iEMG rati- o, MF slope and co-contraction ratio can be used as reference standard for evaluating the durability, and homo- geneity of