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Journal of Medical and Biological Engineering

, Volume 39, Issue 6, pp 960–966 | Cite as

The Efficacy of Respiratory Regulation on Parasympathetic Nervous System Appraised by Heart Rate Variability

  • Yung-Ming Chung
  • Shyh-Liang Lou
  • Peng-Zhe Tsai
  • Ming-Chen WangEmail author
Original Article
  • 65 Downloads

Abstract

Purpose

Stress and sleep deprivation are caused by the imbalance of autonomic nervous system, especially in low activity of parasympathetic nervous system (PNS), which affect daily living and impact economics severely. Since the PNS restores and conserves body and in response to stimulations. Moreover, voluntary control of respiratory rhythm, known as respiratory regulation, is considered a type of external stimulation to the body. Therefore, we studied the efficacy of respiratory regulation on PNS using heart rate variability.

Methods

In this study, 27 subjects completed a 27-min respiratory regulation session that consisted of one of four breathing modes.

Results

The results of this study highlighted a significant elevation of HFnu, an indicator of PNS activity, immediately after each breathing mode (p < 0.001). We also found that sympathetic nervous system and PNS are easily activated and inhibited, respectively, during Mode 2 (inhalation 3 s, exhalation 6 s) breathing mode. This made the LF/HF ratio, an indicator of autonomic nervous system tone, during Mode 2, i.e., (29.3, p < 0.05) the highest among the breathing modes, allowing PNS to quickly become predominant, causing the body to relax during the following resting session. HFnu during Rest C (0.32, p < 0.05) was significantly higher than that during Rest B (0.25, p < 0.05).

Conclusions

These results suggest that Mode 2 can be used as a breathing model for long-term improvements in PNS function. This could lead to health promotion associated with stress by enhancing PNS activity.

Keywords

Parasympathetic nervous system Autonomic nervous system Heart rate variability Respiratory regulation Stress 

Notes

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

40846_2019_472_MOESM1_ESM.docx (65 kb)
Supplementary material 1 (DOCX 64 kb)

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Copyright information

© Taiwanese Society of Biomedical Engineering 2019

Authors and Affiliations

  • Yung-Ming Chung
    • 1
  • Shyh-Liang Lou
    • 1
  • Peng-Zhe Tsai
    • 1
  • Ming-Chen Wang
    • 1
    Email author
  1. 1.Department of Biomedical Engineering, College of EngineeringChung Yuan Christian UniversityTaoyuan CityTaiwan

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