Related Experiment Videos
[Sleep structure in relation to respiration and heart rate in children in puberty]
A Unbehaun1, A Patzak, R Mrowka
1Institut für Physiologie der Charité, Humboldt-Universität zu Berlin, Deutschland.
Insights
Cardiorespiratory interaction is strongest during non-REM sleep, showing significant coupling between breathing and heart rhythm. This connection weakens during REM sleep and wakefulness, highlighting sleep
Area of Science:
- Cardiorespiratory Physiology
- Sleep Science
- Pediatric Health
Context:
- Cardiorespiratory interaction, specifically respiratory sinus arrhythmia, varies significantly across different sleep stages.
- Understanding this interaction is crucial for insights into autonomic nervous system regulation during sleep.
- Previous research has not fully elucidated the quantitative differences in cardiorespiratory coupling during various sleep states in children.
Purpose:
- To investigate the intensity of respiratory entrainment on heart rhythmicity during different sleep stages (REM, non-REM) and wakefulness in healthy children.
- To compare the cardiorespiratory interaction patterns across these states using polygraphic recordings and spectral analysis.
- To determine the degree of coupling between breathing and heart rate variability during various sleep patterns.
Summary:
- Analysis of coherence revealed pronounced cardiorespiratory interaction during non-REM sleep (0.80 ± 0.07).
- Heart rhythmicity was largely independent of breathing during REM sleep (0.52 ± 0.11).
- The cardiorespiratory coupling was weaker during wakefulness (0.64 ± 0.09) compared to non-REM sleep.
Impact:
- Findings demonstrate a clear dependence of cardiorespiratory interaction on sleep patterns in children aged 12-15.
- The study provides quantitative evidence of distinct cardiorespiratory coupling dynamics during non-REM versus REM sleep.
- This research contributes to understanding autonomic regulation and its modulation by sleep architecture in pediatric populations.
Abstract:
The different expression of respiratory sinus arrhythmia in REM- versus nonREM-sleep indicates a dependence of cardiorespiratory interaction on patterns of sleep. Investigations of the intensity of respiratory entrainment on heart rhythmicity during various stages of sleep will provide an insight into the coupling of cardiorespiratory interaction and sleep patterns. 42 healthy children (12 to 15 years old) were polygraphically investigated over 24 h. An ECG, EOG, and actogram were performed, respiratory movements were observed, and the skin temperature was taken. The power spectra of the instantaneous heart rate and the respirograms were calculated. The analysis of coherence was carried out to determine how pronounced the cardiorespiratory interaction is. REM-sleep, nonREM-phases, and wakefulness were compared. The spectral parameters of instantaneous heart rate show differences between both stages of sleep and the waking state. Due to a dependence of spectral power on breathing patterns, drawing quantitative conclusions is not possible. The analysis of coherence provides more information about sleep patterns within the cardiorespiratory interaction. It is very pronounced during non-REM-sleep (0.80 +/- 0.07; mean +/- standard deviation). Heart rhythmicity proceeds independent of breathing during REM-sleep (0.52 +/- 0.11). The coupling is weaker than during wakefulness (0.64 +/- 0.09).