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KMID : 1147720120050010015
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Journal of Acupuncture and Meridian Studies
2012 Volume.5 No. 1 p.15 ~ p.20
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A Naturalistic Study of the Effect of Acupuncture on Heart-Rate Variability
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Fasmer Ole Bernt
Liao Hanbo
Huang Yong
Berle Jan Oystein
Wu Junxian
Oedegaard Ketil Joachim
Wik Gustav
Zhang Zhangjin
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Abstract
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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 sympatho-vagal balance) was not altered. The HR was unchanged. The sample entropy, which is a measure of the complexity of time series, was significantly increased (+35%).
Conclusions: Acupuncture produced a pattern of changes different from that seen in pathological conditions, where increased variability and reduced complexity is expected.
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KEYWORD
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acupuncture, Fourier analysis, heart rate variability, sample entropy
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