Responses of Autonomic Nervous System and Gastrointestinal Function to Acupuncture at Abdominal Anterior Cutaneous Nerve : A Pilot Study

Article information

J Korean Med. 2019;40(1):99-113
Department of Rehabilitation Medicine of Korean Medicine, College of Korean Medicine, Dongguk University
Correspondence to: 금동호 (Dongho Keum), 경기도 성남시 분당구 불정로 268 동국대학교분당한방병원 한방재활의학과, Tel: +82-31-710-3728, FAX: +82-31-710-3780, E-mail: keumdh660@naver.com
Received 2019 February 24; Revised 2019 March 15; Accepted 2019 March 15.

Abstract

Objectives

This study is designed to identify the responses of autonomic nervous system and gastrointestinal function which are induced by acupuncture at abdominal anterior cutaneous nerve.

Methods

This study is one group before and after pilot study. Subjects were treated once, after having been fasting six hours. They had before tests, labeling points for acupuncture, acupuncture, and after tests in order. The points of acupuncture were motor points of rectus abdominis where the abdominal anterior cutaneous nerve came to the skin from abdominal wall. Before and after tests were consisted of three things: Digital Infrared Thermographic Imaging(D.I.T.I.), Heart Rate Variability(HRV), and Recording of bowel sounds.

Results

There were significant differences on the skin temperature of upper body and the frequency of bowel sounds(p<0.001, p<0.001). The HRV parameters and volume of bowel sounds had no significant differences(p>0.05, p>0.05).

Conclusion

Even though no significant differences in HRV parameters, the significant differences of skin temperature of upper body and frequency of bowel sounds could mean acupuncture at abdominal anterior cutaneous nerve could affect the autonomic nervous system and gastrointestinal function. However, this study had no group to compare with. Future randomized project should address this issue.

Fig. 1

Digital Infrared Thermographic Imaging

Fig. 2

Electrostethoscope

Fig. 3

Point for attaching electrostethoscope

Fig. 4

Analyzing bowel sounds

(a) Visualized bowel sounds and noise

(b) Transformed bowel sounds for analyzing

Fig. 5

Electric probe

Fig. 6

Abdominal Anterior Cutaneous Nerve15)

(a) Nerves of anterior abdominal wall

(b) Thoracoabdominal nerves

Fig. 7

Points for acupuncture.

Fig. 8

Skin temperature changes of anterior and posterior side of upper body

(a) Skin temperature changes of anterior side of upper body

(b) Skin temperature changes of posterior side of upper body

Fig. 9

Changes of Heart Rate Variability

(a) Changes of MHRT

(b) Changes of RMS-SD

(c) Changes of LF

(d) Changes of HR

(e) Changes of LF/HF ratio

Fig. 10

Changes of bowel sounds’ volume and frequency

(a) Changes of volume of bowel sounds

(b) Changes of frequency of bowel sounds

General Characteristics of the Subjects

Skin Temperature Changes of Anterior and Posterior Side of Upper Body

Changes of Heart Rate Variability

Volume and Frequency of Bowel Sound

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Article information Continued

Fig. 1

Digital Infrared Thermographic Imaging

Fig. 2

Electrostethoscope

Fig. 3

Point for attaching electrostethoscope

Fig. 4

Analyzing bowel sounds

(a) Visualized bowel sounds and noise

(b) Transformed bowel sounds for analyzing

Fig. 5

Electric probe

Fig. 6

Abdominal Anterior Cutaneous Nerve15)

(a) Nerves of anterior abdominal wall

(b) Thoracoabdominal nerves

Fig. 7

Points for acupuncture.

Fig. 8

Skin temperature changes of anterior and posterior side of upper body

(a) Skin temperature changes of anterior side of upper body

(b) Skin temperature changes of posterior side of upper body

Fig. 9

Changes of Heart Rate Variability

(a) Changes of MHRT

(b) Changes of RMS-SD

(c) Changes of LF

(d) Changes of HR

(e) Changes of LF/HF ratio

Fig. 10

Changes of bowel sounds’ volume and frequency

(a) Changes of volume of bowel sounds

(b) Changes of frequency of bowel sounds

Table 1

General Characteristics of the Subjects

Group Total
n 30
Age 27±3.10
Gender Male n(%) 7(23.0)
Female n(%) 23(77.0)

Values are mean ± S.D.

Table 2

Skin Temperature Changes of Anterior and Posterior Side of Upper Body

Anterior Part (°C) Posterior Part (°C)
Before 31.63 ± 1.17 32.05 ± 1.10
After 32.58 ± 0.90 33.82 ± 0.68
P-value < 0.001 < 0.001

Values are mean ± S.D.

P-values were calculated by Paired T-test

Table 3

Changes of Heart Rate Variability

Before After P-value
MHRT* 64.42 ± 8.93 63.11 ± 8.41 0.221
RMS-SD 40.67 ± 19.85 40.44 ± 17.37 0.929
LF 1417.35 ± 2047.81 1698.06 ± 4261.04 0.877
HF§ 1121.82 ± 1533.49 947.97 ± 1468.19 0.558
LF/HF ratio 1.31 ± 1.11 1.35 ± 0.81 0.344

Values are mean ± S.D.

*

MHRT : Mean Heart rate,

RMS-SD : Root Mean Square of the Successive Differences

LF : Low Frequency Density,

§

HF : High Frequency Density

P-values of MHRT and RMS-SD was calculated by Paired T-test

P-values of LF, HF and LF/HF ratio was calculated by Wilcoxon signed rank test

Table 4

Volume and Frequency of Bowel Sound

Volume (dB) Frequency (Hz)
Before −13.61 ± 2.48 165.32 ± 36.80
After −13.87 ± 1.59 200.38 ± 31.21
P-value 0.611 < 0.001

Values are mean ± S.D.

P-values were calculated by Paired T-test