Table 2.
Normative heart rate variability percentile values adjusted for age and heart rate, by sex
| Boys
|
Girls
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 5th | 25th | 50th | 85th | 95th | 5th | 25th | 50th | 85th | 95th | |
| Time-domain | ||||||||||
| SDNN (ms) | 71.1 | 83.9 | 95.5 | 111.7 | 124.9 | 76.4 | 89.9 | 100.3 | 117.0 | 128.5 |
| SDANN (ms) | 15.1 | 20.0 | 24.5 | 31.1 | 36.3 | 17.8 | 23.3 | 27.2 | 33.9 | 38.8 |
| SDNNi (ms) | 84.0 | 95.8 | 106.7 | 121.6 | 134.4 | 89.0 | 101.3 | 110.8 | 126.3 | 136.5 |
| rMSSD (ms) | 41.2 | 49.0 | 56.0 | 65.9 | 73.9 | 45.4 | 53.6 | 59.9 | 70.1 | 77.1 |
| pNN50 (%) | 31.7 | 38.0 | 43.7 | 51.8 | 58.3 | 34.9 | 41.6 | 46.7 | 55.0 | 60.7 |
| Frequency-domain | ||||||||||
| VLF (ms2) | 2,936.8 | 3,363.0 | 3,756.2 | 4,293.0 | 4,749.6 | 3,131.4 | 3,573.7 | 3,914.1 | 4,474.7 | 4,843.7 |
| LF (ms2) | 3,882.1 | 4,316.6 | 4,713.3 | 5,270.7 | 5,765.8 | 4,079.9 | 4,541.8 | 4,892.4 | 5,448.8 | 5,801.6 |
| HF (ms2) | 1,668.4 | 1,946.6 | 2,202.3 | 2,559.9 | 2,857.2 | 1,797.2 | 2,094.6 | 2,322.4 | 2,695.9 | 2,945.9 |
| lnVLF | 2.6 | 2.9 | 3.2 | 3.5 | 3.9 | 2.7 | 3.0 | 3.3 | 3.6 | 3.9 |
| lnLF | 3.4 | 3.7 | 3.9 | 4.3 | 4.7 | 3.5 | 3.8 | 4.0 | 4.4 | 4.7 |
| lnHF | 2.9 | 3.3 | 3.7 | 4.2 | 4.6 | 3.1 | 3.5 | 3.8 | 4.3 | 4.6 |
| LF:HF ratio | 0.0 | 0.1 | 0.2 | 0.4 | 0.5 | 0.0 | 0.1 | 0.2 | 0.4 | 0.6 |
Ms milliseconds, ln log-transformed value