Download PDF
Methods Inf Med 2007; 46(02): 179-185
DOI: 10.1055/s-0038-1625403
Original Article
Schattauer GmbH

Investigation of the Influence of Swallowing, Coughing and Vocalization on Heart Rate Variability with Respiratory-phase Domain Analysis

K. Kotani
1   Graduate School of Information Science and Technology, The University of Tokyo, Tokyo, Japan
,
M. Tachibana
2   Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
,
K. Takamasu
2   Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
› Author Affiliations
Further Information

Publication History

Publication Date:
11 January 2018 (online)

    Permissions and Reprints

Summary

Objectives : The objective of our study is to investigate extrinsic influences on heart rate variability using respiratory-phase domain analysis. Swallowing, coughing and vocalization (reading aloud and conversation) are adopted as extrinsic influences.

Methods : In this study, an instantaneous R-R interval (RRI) is sampled at each π/10 rad of the respiratory phase and the data is divided into three subsets: a) respiration with event, b) one respiration after the event, and c) normal respiration. Then the mean waveforms of respiratory sinus arrhythmia (RSA) are calculated and compared.

Results and Conclusions : It is found that swallowing induces tachycardia that recovers within one respiration. Coughing also induces tachycardia, but it does not recover within one respiration. Vocalization shortens the mean RRI, but the changing respiratory pattern due to vocalization has no statistically significant influence on the amplitude of RSA. Furthermore, it is found that the proposed method is effective for analyzing extrinsic influences on heart rate variability (HRV).

Keywords

Heart rate variability - respiratory phase - respiratory sinus arrhythmia
 

  • References

  • 1. Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology.. Heart rate variability: standards of measurement, physiological interpretation and clinical use. Circulation 1996; 93: 1043-1065.
    CrossrefPubMedGoogle Scholar
  • 2. Katona PG., Jih F. Respiratory sinus arrhythmia: noninvasive measure of parasympathetic cardiac control. J Appl Physiol 1975; 39: 801-805.
    CrossrefPubMedGoogle Scholar
  • 3. Pomeranz B. Assesment of autonomic function in humans by heart rate spectral analysis. Am J Physiol 1985; 248: H151-153.
    PubMedGoogle Scholar
  • 4. Kotani K, Hidaka I, Yamamoto Y, Ozono S. Analysis of respiratory sinus arrhythmia with respect to respiratory phase. Methods Inf Med 2000; 39: 153-156.
    Article in Thieme ConnectPubMedGoogle Scholar
  • 5. Kotani K, Tachibana M, Takamasu K. Repiratory phase domain analysis can estimate cardiac vagal activity accurately during a mental arithmetic task. Methods Inf Med.. In press
    PubMedGoogle Scholar
  • 6. Han K, Nagel JH, Schneiderman N. A continuous representation of heart rate. Proc Ann Int Conf IEEE/EMBS 1992; 14: 785-786.
    PubMedGoogle Scholar
  • 7. Rosenblum MG. Phase synchronization of chaotic oscillators. Phys Rev Lett 1996; 76: 1804-1807.
    CrossrefPubMedGoogle Scholar
  • 8. Ivanov PC. Multifractality in human heartbeat dynamics. Nature 1999; 399: 461-465.
    CrossrefPubMedGoogle Scholar
  • 9. Kiyono K, Struzik ZR, Aoyagi N, Sakata S, Hayano J, Yamamoto Y. Critical scale-invariance in healthy human heart rate. Phys Rev Lett. 2004 93: 178103-1-4
    PubMedGoogle Scholar
  • 10. Aoyagi N, Ohashi K, Yamamoto Y. Frequency characteristics of long-term heart rate variability during constant routine protocol. Am J Phys 2003; 285: R171-176.
    CrossrefPubMedGoogle Scholar