Table 1.
Descriptive statistics for heart rate variability.
| HR | SDNN | RMSSD | LF | HF | LF/HF | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M | SD | M | SD | M | SD | M | SD | M | SD | M | SD | ||
| Control condition | Baseline | 67.18 | 7.97 | 92.22 | 37.37 | 57.14 | 33.17 | 3735.74 | 6586.00 | 1266.25 | 1450.35 | 4.09 | 3.91 |
| Rest | 67.66 | 7.81 | 91.53 | 34.09 | 55.52 | 30.96 | 3227.03 | 4809.28 | 1171.95 | 1315.19 | 4.05 | 3.74 | |
| Recovery | 66.71 | 7.76 | 97.36 | 39.60 | 58.08 | 30.77 | 3894.99 | 5905.07 | 1374.02 | 1739.26 | 4.65 | 5.22 | |
| Slow-paced breathing condition | Baseline | 67.65 | 8.43 | 85.67 | 37.61 | 54.08 | 31.23 | 3185.95 | 4969.31 | 1247.59 | 1529.23 | 4.15 | 4.82 |
| Slow-paced breathing | 68.59 | 6.86 | 161.10 | 239.21 | 89.93 | 41.39 | 14580.16 | 11277.36 | 1602.47 | 1403.40 | 16.13 | 13.15 | |
| Recovery | 67.52 | 8.25 | 88.59 | 35.45 | 53.95 | 30.04 | 2927.52 | 3638.94 | 1263.93 | 1869.90 | 4.48 | 5.41 | |
Note: SDNN = standard deviation of all RR intervals, RMSSD: root mean square of the successive differences, LF = low-frequency, HF = high-frequency.