Table 2.
HRV Reference Ranges.
| Feature | Range | Mean ± SD |
|---|---|---|
| RR interval (ms) | 785–1160 | 926 ± 90 |
| rMSSD (ms) | 19–75 | 42 ± 15 |
| SDRR (ms) | 32–93 | 50 ± 16 |
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