Summary
A 6-month course of hormone replacement therapy significantly improved cardiac autonomic function in postmenopausal women, with increased parasympathetic activity and improved SDNN values.
Methods
6-month HRT intervention study with pre/post HRV assessment
Key Findings
- SDNN increased from 28.8 to 35.4 ms after 6 months
- HF component (parasympathetic) significantly increased
- LF/HF ratio decreased, indicating better autonomic balance
- Effects may explain cardioprotective benefits of HRT
- Progestogen type may influence outcomes
Limitations
Timing of HRT initiation matters for cardiovascular effects
What This Means for You
If you're postmenopausal and considering HRT, improved HRV may be one benefit. Discuss with your doctor—timing and formulation matter for both cardiovascular and autonomic effects.
Source
Read the original paper in PMC/Korean Circulation Journal ↗
Added to HRV Zone: 2025-01-10