title: [Effects of slow twisting needle insertion and tubing needle insertion at Neiguan (PC 6) on cardiovascular function: a comparative study].
abstract: OBJECTIVE
  To compare the effects between slow twisting needle insertion and tubing needle insertion.
  
  
  METHODS
  With cross-over design, 100 healthy young subjects (half male and half female) aged from 19 to 23 years were randomly divided into two groups by random digital table, 50 cases in each one. At the first stage, subjects in the group A were treated with slow twisting needle insertion while, subjects in,the group B were treated with tubing needle insertion. One week later, the procedure of second stage was performed alternately. The needle was inserted into Neiguan (PC 6) with two methods by one acupuncturist. The needle was retained for 5 min before removal. Five min before needle insertion as well as needle withdrawal and 30 min after needle withdrawal, ZXG-E automatic cardiovascular diagnostic apparatus was used to test cardiovascular function.
  
  
  RESULTS
  At the tim of needle withdrawal, slow twisting needle insertion could improve effect work of kinetics (EWK), effective blood volume (BV) and reduce elastic expansion coefficient of blood vessel (FEK) and left ventricular spray blood impedance (VER), which was significantly different from tubing needle insertion (all P < 0.05). Thirty min after needle withdrawal, the differences of the indices of cardiovascular function between the two groups were not significant (all P > 0.05).
  
  
  CONCLUSIONS
  The slow twisting needle insertion is significantly superior to tubing needle insertion on lowering vascular tension and VER, improving EWK and BV.
authors.forename: Shaoli
authors.initials: S
authors.lastname: Ning
authors.forename: Lihua
authors.initials: L
authors.lastname: Zhao
authors.forename: Lingjun
authors.initials: L
authors.lastname: Xu
authors.forename: Yu
authors.initials: Y
authors.lastname: Huang
authors.forename: Yong
authors.initials: Y
authors.lastname: Pang
authors.forename: Dingjian
authors.initials: D
authors.lastname: Huang
mesh_terms: D015669:Acupuncture Points; D015670:Acupuncture Therapy / Q000295:instrumentation / Q000379:methods*; D001775:Blood Circulation; D001810:Blood Volume; D003331:Coronary Vessels / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009339:Needles; D016276:Ventricular Function; D055815:Young Adult