Study on changes in Ryodoraku test according to carbon monoxide concentration in exhaled breath

Article information

J Korean Med. 2020;41(1):45-54

Publication date (electronic) : 2020 March 9

doi : https://doi.org/10.13048/jkm.20004

Division of Horticulture & Medicinal Plant, Andong National Univ. Andong, Republic of Korea

Correspondence to: 구진숙 경상북도 안동시 경동로 1375 안동대학교 생명과학대학 원예생약융합학부, Tel: +82-54-820-5845, Fax: +82-54-820-6252, E-mail: kimkoo1114@anu.ac.kr

Received 2020 February 4; Revised 2020 February 26; Accepted 2020 February 27.

Abstract

Objectives

The aim of this study was to investigate relationships between Ryodoraku and carbon monoxide concentration during expiration of smokers.

This study was designed as an exploratory observational study. This study was based on the hypothesis that increased levels of carbon monoxide in the smoker’s breath may affect indicators that reflect the respiratory and circulatory systems in the Ryodoraku test.

Methods

The participants were 49 people who smoked for over a year. They were examined at least one hour after their last smoking. They were tested in a stable state. When examining carbon monoxide during expiration, they breathed deeply, kept breathing for 20 seconds, and slowly exhaled. The Ryodoraku test was performed on its representative points of twelve meridians. Pearson’s correlation analysis was used to investigate correlation between the concentration of carbon monoxide in the breath and the current in the measurement points.

Results

The higher the carbon monoxide concentration in the exhalation, the significantly greater the current value of Lt H1·both H2·Lt H3·Rt H5, deviation of Lt H1·Lt H2·Lt H3 current value and the laterality between right and left current of H3.

Conclusion

The more cigarette smoked, the more changes in heart, lung, pericardium and triple energizer meridians were observed in the Ryodoraku test. I found that increased carbon monoxide in smokers could affect the results of the Ryodoraku test.

Keywords: Ryodoraku; carbon monoxide; smoking

Table 1

Point of Measurement with Ryodoraku

Table 2

General Characteristics of Subjects and Carbon Monoxide Levels in Exhalation(N=49)

Table 3

Pearson’s correlation coefficient

Table 4

Pearson’s correlation coefficient

Table 5

Pearson’s correlation coefficient

Table 6

Pearson’s correlation coefficient

Table 7

Pearson’s correlation coefficient

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Article information Continued

Table 1

Point of Measurement with Ryodoraku

Meridian	H1	H2	H3	H4	H5	H6
Organ	Lung	Pericardium	Heart	Small Intestine	Triple energizer	Large Intestine
Acupoint	태연(LU9)	대릉(PC7)	신문(HT7)	양곡(SI5)	양지(TE4)	양계(LI5)

Meridian	F1	F2	F3	F4	F5	F6

Organ	Spleen	Liver	Kidney	Bladder	Gallbladder	Stomach
Acupoint	태백(SP3)	태충(LR3)	태계(KI3)	속골(BL65)	구허(GB40)	충양ST42)

Table 2

General Characteristics of Subjects and Carbon Monoxide Levels in Exhalation(N=49)

Variables	Categories	n(%)
Age	3rd decade	14(28.6)
	4th decade	12(24.5)
	5th decade	4(8.2)
	6th decade	11(22.4)
	>60	8(16.3)

Carbon Monoxide in Exhalation (ppm)	0–5	13(26.5)
	6–10	12(25.5)
	11–15	14(28.6)
	16–20	5(8.2)
	20–37	5(8.2)

Table 3

Pearson’s correlation coefficient

		Age
CO (ppm)	Correlation coefficient	0.339*
	p-value	0.017
	N	49

p < 0.05

Table 4

Pearson’s correlation coefficient

		CH1 (Lt)	DH1(Lt)
CO (ppm)	Correlation coefficient	0.375^**	0.361*
	p-value	0.008	0.011
	N	49	49

p < 0.05

CH1 means current value on representative point of H1 ryodoraku

DH1 means current deviation on representative point of H1 ryodoraku

Table 5

Pearson’s correlation coefficient

		CH2 (Rt)	CH2 (Lt)	DH2 (Lt)
CO (ppm)	Correlation coefficient	0.359^*	0.390**	0.388**
	p-value	0.011	0.006	0.006
	N	49	49	49

^**

p < 0.01

CH2 means current value on representative point of H2 ryodoraku

DH2 means current deviation on representative point from current average of H2 ryodoraku

Table 6

Pearson’s correlation coefficient

		LH3	CH3 (Lt)	DH3 (Lt)
CO (ppm)	Correlation coefficient	0.396**	0.372**	0.331*
	p-value	0.005	0.009	0.020
	N	49	49	49

p < 0.05

^**

p < 0.01

LH3 means current laterality of Lt and Rt H3 rhodoraku

CH3 means current value on representative point of H3 ryodoraku

DH3 means current deviation on representative point from current average of H3 ryodoraku

Table 7

Pearson’s correlation coefficient

		CH5 (Rt)
CO (ppm)	Correlation coefficient	0.282*
	p-value	0.050
	N	49

p < 0.05

CH5 means current value on representative point of H5 ryodoraku