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A Naturalistic Study of the Effect of Acupuncture on Heart-Rate Variability
Ole Bernt Fasmer,Yong Huang,Hanbo Liao,Jan Øystein Berle,Junxian Wu,Ketil Joachim Oedegaard,Gustav Wik,Zhangjin Zhang 사단법인약침학회 2012 Journal of Acupuncture & Meridian Studies Vol.5 No.1
Objectives: To study the effect of acupuncture on heart rate variability (HRV) by using linear and non-linear methods of analysis. Methods: 40 patients were recruited consecutively, including patients with insomnia, stomachache,diarrhea, dizziness, cervical syndrome, lower back pain, gonarthritis, peripheral facial paralysis, post-traumatic organic brain syndrome and urinary retention. Different acupoint prescriptions were used, according to the textbook for 5-years’ education on traditional Chinese medicine specialty, which is used in Chinese Universities. HRV was recorded before,during, and after acupuncture. Results: Acupuncture substantially reduced variability, causing a 41% reduction in the standard deviation. Using a Fourier analysis, the variances both in the low frequency (LF) and the high frequency (HF) ranges were markedly reduced, but the LF/HF ratio (an indication of sympathovagal balance) was not altered. The HR was unchanged. The sample entropy, which is a measure of the complexity of time series, was significantly increased (þ35%). Conclusions: Acupuncture produced a pattern of changes different from that seen in pathological conditions, where increased variability and reduced complexity is expected.