RSA is a large component of HRV. It emerges from vagal modulation of the sinoatrial node. Slow paced breathing at the resonance frequency maximises RSA amplitude and is the primary driver of high HRV readings during a breathwork session.
The normal variation in heart rate across the breath cycle — faster on inhale, slower on exhale.
RSA is a large component of HRV. It emerges from vagal modulation of the sinoatrial node. Slow paced breathing at the resonance frequency maximises RSA amplitude and is the primary driver of high HRV readings during a breathwork session.
See also
Glossary · Physiology
HRV
Heart rate variability — the variation in time between consecutive heartbeats. Higher HRV generally reflects better autonomic flexibility.
Learn · Science
Respiratory Sinus Arrhythmia (RSA): The Reason HRV Exists
Your heart rate speeds up on the inhale and slows on the exhale. That variation is RSA, and it is a huge part of what heart rate variability measures.
Learn · Science
HRV and Coherence Breathing: What the Research Shows
Heart rate variability rises when the breath is slow, steady, and near the cardiovascular resonance frequency. Here is the mechanism and the evidence.