Table 2.
Baseline characteristics and hemodynamic response to LBNP for group A and group B.
| Group A (n = 5) | Group B (n = 5) | |||||
|---|---|---|---|---|---|---|
| Rest | LBNP | Rest | LBNP | |||
| Sex | (M/F) | 2/3 | 3/2 | |||
| Age | (years) | 21 ± 2 | 24 ± 2 | |||
| BMI | (kg/m2) | 23 ± 3 | 23 ± 3 | |||
| SAP | (mmHg) | day 0 | 123 ± 10 | 106 ± 14* | 120 ± 17 | 110 ± 13* |
| day 7 | 117 ± 8 | 102 ± 4* | 116 ± 9 | 104 ± 4* | ||
| DAP | (mmHg) | day 0 | 67 ± 7 | 68 ± 8 | 71 ± 14 | 71 ± 12 |
| day 7 | 68 ± 4 | 69 ± 2 | 67 ± 6 | 67 ± 6 | ||
| MAP | (mmHg) | day 0 | 87 ± 7 | 82 ± 10 | 88 ± 16 | 87 ± 14 |
| day 7 | 86 ± 5 | 81 ± 2 | 84 ± 7 | 81 ± 5 | ||
| HR | (beats/min) | day 0 | 57 ± 8 | 87 ± 13* | 71 ± 12† | 86 ± 12* |
| day 7 | 55 ± 7 | 88 ± 14* | 67 ± 13† | 81 ± 17* | ||
| SV | (ml) | day 0 | 121 ± 13 | 77 ± 17* | 105 ± 17 | 79 ± 16* |
| day 7 | 113 ± 16 | 70 ± 13* | 108 ± 10 | 76 ± 13* | ||
| CO | (l/min) | day 0 | 6.8 ± 1.1 | 6.6 ± 1.3 | 7.3 ± 1.2 | 6.6 ± 1* |
| day 7 | 6.1 ± 1.1 | 6.0 ± 0.8 | 6.8 ± 1.1 | 6.0 ± 0.8* | ||
| TPR | (dyn.sec/cm5) | day 0 | 1042 ± 80 | 1015 ± 89 | 994 ± 213 | 1062 ± 261* |
| day 7 | 1149 ± 160 | 1111 ± 105 | 977 ± 187 | 1100 ± 179* | ||
| BRS | (ms/mmHg) | day 0 | 22 ± 8 | 10 ± 4* | 11 ± 4† | 9 ± 4 |
| day 7 | 22 ± 7 | 10 ± 3* | 13 ± 3† | 10 ± 3 | ||
Values are presented as mean ± SD. BMI, body mass index; AP, arterial pressure (Systolic, Diastolic and Mean,); HR, heart rate; SV, stroke volume; CO, cardiac output; TPR, total peripheral resistance; BRS, baroreflex sensitivity.
*
p < 0.05 vs. rest.
†
p < 0.05 vs. group A.