HRV as a Cardiovascular Marker
HRV research began in cardiology, and the connection remains strong. Reduced HRV is associated with increased cardiovascular risk, while healthy HRV suggests good cardiac autonomic function.
Important: HRV is a general indicator, not a diagnostic tool. Always work with your cardiologist for heart-related concerns.
The Heart-HRV Connection
Why HRV matters for heart health: - Reflects autonomic nervous system control of the heart - Low HRV associated with increased arrhythmia risk - Correlates with cardiovascular mortality in research - Can indicate autonomic dysfunction before symptoms appear
Key research findings: - 24-hour SDNN below 50ms associated with higher mortality - Post-heart attack patients with low HRV have poorer outcomes - HRV improves with cardiac rehabilitation - Heart failure patients show characteristic HRV patterns
Improving HRV with Heart Disease
With medical approval, many HRV interventions help cardiac patients:
Generally beneficial: - Cardiac rehabilitation exercise programs - Stress reduction techniques - Breathing exercises (especially resonance breathing) - Mediterranean diet - Quality sleep
Cautions: - Get clearance before starting exercise programs - Some interventions may need modification - Avoid extreme cold exposure without guidance - Work with your care team on intensity
Related Guides
- Low HRV — Understanding low HRV causes
- HRV and Aging — Age-related cardiovascular changes
- Improving HRV — Safe intervention strategies