← Reference index
Heart rate variability norms
rMSSD compared with age and sex distributions by measurement context.
rMSSD distributions narrow steadily with age. Values here reflect overnight or supine short recordings.
rMSSD (ms) by age band
| Group | 10th | 25th | 50th | 75th | 90th |
|---|---|---|---|---|---|
| 20–29 | 26 | 38 | 55 | 76 | 102 |
| 30–39 | 22 | 32 | 46 | 64 | 86 |
| 40–49 | 18 | 26 | 38 | 53 | 72 |
| 50–59 | 15 | 22 | 31 | 44 | 60 |
| 60–69 | 12 | 18 | 26 | 36 | 50 |
| 70+ | 10 | 15 | 21 | 30 | 41 |
Sources
- Nunan D et al. A quantitative systematic review of normal values for short-term HRV. Pacing and Clinical Electrophysiology, 2010.
- Umetani K et al. Twenty-four hour time domain heart rate variability and heart rate. JACC, 1998.