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Liu CY, Wei CC, Lo PC. Variation Analysis of Sphygmogram to Assess Cardiovascular System under Meditation. Evid Based Complement Alternat Med. 2007;6(1):107-12doi: 10.1093/ecam/nem065.
Liu, C. Y., Wei, C. C., & Lo, P. C. (2009). Variation Analysis of Sphygmogram to Assess Cardiovascular System under Meditation. Evidence-based complementary and alternative medicine : eCAM, 6(1), 107-12. https://doi.org/10.1093/ecam/nem065
Liu, Chuan-Yi, et al. "Variation Analysis of Sphygmogram to Assess Cardiovascular System under Meditation." Evidence-based complementary and alternative medicine : eCAM vol. 6,1 (2009): 107-12. doi: https://doi.org/10.1093/ecam/nem065
Liu CY, Wei CC, Lo PC. Variation Analysis of Sphygmogram to Assess Cardiovascular System under Meditation. Evid Based Complement Alternat Med. 2009 Mar;6(1):107-12. doi: 10.1093/ecam/nem065. Epub 2007 Jun 15. PMID: 18955219; PMCID: PMC2644278.
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Evid Based Complement Alternat Med. 2009 Mar;6(1):107-12. doi: 10.1093/ecam/nem065. Epub 2007 Jun 15.

Variation Analysis of Sphygmogram to Assess Cardiovascular System under Meditation.

Evidence-based complementary and alternative medicine : eCAM

Chuan-Yi Liu, Ching-Chuan Wei, Pei-Chen Lo

Affiliations

  1. Department of Electrical and Control Engineering, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 30010, Taiwan, R.O.C. [email protected].

PMID: 18955219 PMCID: PMC2644278 DOI: 10.1093/ecam/nem065

Abstract

In this article, we studied how meditation affects the characteristics of the cardiovascular system, mainly based on blood pressure waveforms (BPW). Four parameters derived from BPW include the rising slope (h(1)/t(1)), normalized height of T wave (h(3)/h(1)), normalized height of V(3) valley (h(4)/h(1)) and normalized height of D wave (h(5)/h(1)), where t(1) and h(i), i = 1, ... ,5 are quantitative features of the BPW waveform pattern. A larger value of h(1)/t(1) reflects better heart ejection ability and aorta compliance. A larger value of h(3)/h(1) may infer an arterial system with good elasticity. The decrease (increase) of h(4)/h(1) parameter indicates the decrease (increase) of peripheral resistance of vessels. A larger value of h(5)/h(1) indicates better artery elasticity and aortic valve function. In comparison with the control group, Zen-meditation practitioners have more after-meditation h(1)/t(1), h(3)/h(1) and h(5)/h(1) increase, with more h(4)/h(1) decrease, with statistical significance (P < 0.05). The observation allows us to infer that Zen meditation may effectively improve relevant characteristics of the cardiovascular system.

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