Table 2.
Resting blood pressure and 2 min heart rate variability parameters before and after fasting.
| Parameter | Before fasting | After fasting |
|---|---|---|
| Blood pressure | ||
| SBP (mmHg) | 120.2 (7.1) | 115.6 (7.3)∗ |
| DPP (mmHg) | 76.1 (5.5) | 73.9 (6.0) |
| Heart rate variability | ||
| HR (bpm) | 80.8 (17.8) | 76.2 (19.5)∗ |
| SDNN (ms) | 45.3 (27.3) | 52.8 (28.4) |
| SDNN (ln (ms)) | 3.68 (0.54) | 3.83 (0.57) |
| RMSSD (ms) | 21.5 (20.6) | 22.78 (16.5) |
| RMSSD (ln (ms)) | 2.74 (0.79) | 2.89 (0.73) |
| LF (ms2) | 720.2 (579.9) | 785.6 (454.3) |
| HF (ms2) | 695.0 (629.8) | 770.0 (618.3) |
| LF (ln (ms2)) | 6.34 (0.69) | 6.52 (0.57) |
| HF (ln (ms2)) | 6.27 (0.73) | 6.33 (0.89) |
| LF (nu) | 51.8 (9.1) | 54.3 (12.4) |
| HF (nu) | 48.2 (9.1) | 45.7 (12.4) |
Data are presented as mean (standard deviation). ∗ p < 0.05, compared with before fasting.
SBP, systolic blood pressure; DBP, diastolic blood pressure; HR, heart rate; SDNN, standard deviation of normal to normal interval; RMSSD, root mean square of the successive differences; LF, low frequency; HF, high frequency.