TABLE 1. Basic Information of Participants (N = 30).
| Baseline demographic data | |
|---|---|
| Age (years) | 26.5 (3.3) |
| Gender (F/M) | 17/13 |
| BMI (kg/m2) | 21.2 (3.4) |
| Heart rate (beats/min) | 75.4 (8.6) |
| Respiratory rate (breaths/min) | 13.0 (3.1) |
| Baseline indices | |
| SDRR (ms) | 47.4 (16.3) |
| RMSSD (ms) | 30.1 (12.0) |
| pNN50 (%) | 9.3 (10.4) |
| VLF (ms2) | 940.1 (700.8) |
| LF (ms2) | 988.9 (1377.6) |
| HF (ms2) | 474.4 (448.1) |
| Tpower (ms2) | 2523.1 (2028.1) |
| LFn (a.u.) | 0.582 (0.206) |
| HFn (a.u.) | 0.332 (0.178) |
| LF/HF (a.u.) | 3.600 (5.036) |
| SD1 (a.u.) | 21.3 (8.4) |
| SD2 (a.u.) | 63.4 (22.0) |
| SDRatio (a.u.) | 0.339 (0.089) |
 (a.u.) |
1.259 (0.272) |
 (a.u.) |
0.850 (0.203) |
| CPercent (%) | 43.9 (26.6) |
| RSA (ms2) | 459.6 (654.1) |
Data were presented as mean (standard deviation). The baseline indices were calculated by the baseline stage of three slow deep breathing modes.