Summary
Short-term exposure to fine particulate matter (PM2.5) is associated with decreased HRV and autonomic dysfunction. Effects are stronger in people with obesity, hypertension, or diabetes.
Methods
Panel studies measuring HRV and PM2.5 exposure
Key Findings
- PM2.5 exposure decreases SDNN, RMSSD, and HF power
- Obese individuals show greater HRV decrements
- People with hypertension/diabetes more susceptible
- Inflammation and oxidative stress likely mechanisms
- Blood pressure control may attenuate effects
Limitations
Individual susceptibility varies significantly
What This Means for You
On high pollution days, your HRV may be lower than usual. If you have cardiovascular risk factors, consider limiting outdoor exercise when air quality is poor. Indoor air filtration may help.
Source
Read the original paper in Environmental Health ↗
Added to HRV Zone: 2025-01-10