Cited by 1,105Heart Rate Variability and Autonomic ControlNeuroscience of respiration and sleepNon-Invasive Vital Sign Monitoring

Respiratory sinus arrhythmia in humans: how breathing pattern modulates heart rate

Hirsch, J. A., Bishop, B.·1981·American Journal of Physiology-Heart and Circulatory Physiology

Abstract

The relationship of respiratory sinus arrhythmia amplitude (RSA) to tidal volume and breathing frequency was quantified during voluntarily controlled tidal volume and breathing frequency and spontaneous quiet breathing. Seventeen seated subjects breathed via mouthpiece and nose-clip, maintaining constant tidal volumes at each of several breathing frequencies. Inspiratory breath hold was zero frequency. Log RSA was plotted vs. log frequency for each tidal volume. The large stable RSA for frequencies less than 6 cycles/min was called low-frequency intercept (LFI, 20 +/- 5 beats/min). Low-frequency intercept was inversely proportional to a subject's age only to 35 yr. At higher breathing frequencies above a characteristic corner frequency (fC, 7.2 +/- 1.5 cycles/min) RSA decreased with constant slope (roll-off; 21 +/- 3.4 dB/decade). The RSA-volume relationship was linear permitting normalization of RSA-frequency curves for tidal volume to yield one curve. Spontaneous breathing data points fell on this curve. Voluntarily coupling of heart rate to breathing frequency in integer ratios reduced breath-by-breath variability of RSA without changing mean RSA. In conclusion, low-frequency intercept, corner frequency, and roll-off characterize an individual's RSA-frequency relationship during both voluntarily controlled and spontaneous breathing.

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Registry

Crossref · 10.1152/ajpheart.1981.241.4.h620

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1 of 1 references verified0 citation errors · 0 not checkable

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  • Maximisation of RSA/HRV at around 6 breaths per min has been confirmed by numerous studies.

    “Maximisation of RSA/HRV at around 6 breaths per min has since been confirmed by numerous studies [65, 73, 74].”
  • Increasing tidal volume and diaphragmatic breathing significantly increase RSA, significantly more so at slower respiration rates.

    “Increasing tidal volume [36, 73, 76] and diaphragmatic breathing [18] have also been shown to significantly increase RSA, significantly more so at slower respiration rates.”
  • Numerous studies have reported decreased RSA with increasing respiration rate.

    “Conversely, numerous studies have reported decreased RSA with increasing respiration rate [72, 73, 77].”
  • Voluntary breathing might not be essential to realize the basic physiological benefits of slow breathing techniques; spontaneous slow breathing without cognitive motor intent may be sufficient.

    “However, there is also evidence that voluntary breathing might not be essential to realize the basic physiological benefits of these techniques; spontaneous slow breathing without cognitive motor intent may be sufficient (Hirsch and Bishop, 1981; Herrero et al., 2018).”
  • RSA shows greater amplitude during higher tidal volumes and lower respiratory frequencies.

    “Regarding respiratory depth, respiratory sinus arrhythmia [which reflects HF when the breathing frequency is comprised between 9 and 24 cycles per minute (Malik, 1996)] shows greater amplitude during higher tidal volumes and lower respiratory frequencies (Hirsch and Bishop, 1981; Shaffer et al., 2014).”

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Authors
Hirsch, J. A., & Bishop, B.
Venue
American Journal of Physiology-Heart and Circulatory Physiology
Published
1981-10-01
Volume
241
Issue
4
Pages
H620-H629
ISSN
  • 0363-6135 (ISSN-L)
  • 1522-1539
OpenAlex
W2126518215
Cited by
1,105
References
1
Citations by year
2026: 13 · 2025: 27 · 2024: 30 · 2023: 30 · 2022: 34 · 2021: 41 · 2020: 49 · 2019: 40 · 2018: 37 · 2017: 44 · 2016: 37 · 2015: 42 · 2014: 44 · 2013: 45 · 2012: 20
FWCI
3.14
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Heart and Circulatory Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Neuroscience of respiration and sleep
  • Physical Sciences › Engineering › Biomedical Engineering › Non-Invasive Vital Sign Monitoring
Keywords
respiratory sinus arrhythmia, heart rate, tidal volume, respiratory rate, corner frequency, roll-off, spontaneous breathing, age differences
MeSH terms
Adult, Female, Heart Rate, Humans, Lung Volume Measurements, Male, Middle Aged, Respiration, Tidal Volume

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