Table 3.
Hemodynamics and autonomic nervous system at rest
| CON | SJL | P value | |||||
|---|---|---|---|---|---|---|---|
| Friday | Monday | Friday | Monday | Interaction | Trial | Time | |
| Brachial SBP, mmHg | 108 (6) | 110 (5) | 108 (8) | 118 (9)a,b | 0.033 | 0.002 | 0.034 |
| Brachial DBP, mmHg | 61 (7) | 61 (6) | 59 (8) | 60 (4) | 0.438 | 0.297 | 0.781 |
| MAP, mmHg | 80 (7) | 80 (6) | 78 (8) | 82 (8) | 0.064 | 0.757 | 0.124 |
| Brachial PP, mmHg | 47 (7) | 50 (6) | 49 (6) | 58 (8) | 0.056 | 0.120 | 0.006 |
| Carotid SBP, mmHg | 105 (6) | 106 (6) | 104 (7) | 111 (11)a | 0.044 | 0.427 | < 0.001 |
| Carotid PP, mmHg | 44 (8) | 45 (7) | 45 (6) | 51 (9) | 0.068 | 0.145 | 0.047 |
| HR, bpm | 59 (9) | 59 (7) | 58 (9) | 59 (11) | 0.905 | 0.952 | 0.834 |
| SV, mL | 104 (16) | 107 (18) | 104 (15) | 102 (25) | 0.304 | 0.337 | 0.974 |
| CO, L/min | 6.1 (1.4) | 6.3 (1.5) | 6.1 (1.4) | 5.9 (1.5) | 0.296 | 0.405 | 0.964 |
| TPR, mmHg/L/min | 13.7 (3.1) | 13.3 (2.9) | 13.4 (3.2) | 14.8 (3.9) | 0.040 | 0.276 | 0.328 |
| Double product, mmHg×bpm | 6302 (916) | 6463 (762) | 6278 (911) | 6935 (1565) | 0.206 | 0.622 | 0.120 |
| RMSSD, ms | 74.9 (45.4) | 71.8 (52.7) | 71.8 (43.0) | 72.9 (40.0) | 0.785 | 0.891 | 0.876 |
| LF/HF | 1.2 (1.1) | 1.3 (1.1) | 1.3 (1.1) | 1.1 (0.8) | 0.274 | 0.759 | 0.823 |
| LF-SBP, mmHg2/Hz | 1.5 (0.9) | 1.3 (1.2) | 1.4 (1.1) | 2.8 (2.2)a,b | 0.014 | 0.076 | 0.037 |
| cvBRS up-up, ms/mmHg | 20.7 (12.7) | 21.6 (9.5) | 21.3 (11.8) | 21.6 (9.4) | 0.912 | 0.922 | 0.797 |
| cvBRS down-down, ms/mmHg | 21.4 (9.9) | 21.8 (9.4) | 20.7 (10.6) | 22.1 (10.0) | 0.643 | 0.960 | 0.468 |
Values are presented as mean (standard deviation)
CO cardiac output, CON control trial, cvBRS cardiovagal baroreflex sensitivity, DBP diastolic blood pressure, HF high frequency, HR heart rate, LF low frequency, LF-SBP low frequency-systolic blood pressure, MAP mean arterial pressure, PP pulse pressure, SBP systolic blood pressure, SJL social jetlag trial, SV stroke volume, TPR total peripheral resistance
aSignificantly different from Friday in the SJL trial (P < 0.05)
bSignificantly different from Monday in the CON trial (P < 0.05)