Table 4.
Rest | Rest + LBNP | Handgrip | Handgrip + LBNP | |
---|---|---|---|---|
No drug | ||||
MAP (mmHg) | 106 ± 4 | 103 ± 4 | 112 ± 4* | 112 ± 5* |
HR (beats min−1) | 63 ± 2 | 65 ± 3 | 72 ± 1* | 74 ± 2* |
SNA (bursts min−1) | 34 ± 5 | 47 ± 2* | 41 ± 5 | 49 ± 3*† |
Δ SNA (% total activity) | 0 ± 0 | 62 ± 14* | 44 ± 15* | 109 ± 17 *† |
FBF (ml min−1 | 113 ± 15 | 89 ± 10* | 627 ± 69* | 551 ± 63*† |
FVC (units) | 109 ± 16 | 88 ± 12* | 570 ± 73* | 498 ± 63*† |
Irbesartan | ||||
MAP (mmHg) | 97 ± 4‡ | 97 ± 5‡ | 102 ± 5‡ | 104 ± 5*‡ |
HR (beats min−1) | 68 ± 3 | 72 ± 4‡ | 74 ± 3* | 80 ± 4* |
SNA (bursts min−1) | 46 ± 4‡‖ | 58 ± 3*‡ | 53 ± 4*‡‖ | 61 ± 5*‡‖ |
Δ SNA (% total activity) | 0 ± 0 | 46 ± 14* | 44 ± 21* | 102 ± 16*† |
FBF (ml min−1) | 122 ± 14 | 97 ± 13* | 631 ± 105* | 631 ± 101* |
FVC (units) | 129 ± 19 | 102 ± 16* | 626 ± 99* | 618 ± 98*‡ |
Washout | ||||
MAP (mmHg) | 105 ± 3 | 102 ± 3 | 112 ± 4 | 112 ± 4 |
HR (beats min−1) | 65 ± 2 | 67 ± 3 | 70 ± 2* | 72 ± 4* |
SNA (bursts min−1) | 32 ± 4 | 49 ± 6* | 40 ± 5* | 46 ± 7* |
Δ SNA (% total activity) | 0 ± 0 | 74 ± 25* | 46 ± 13* | 174 ± 44*† |
FBF (ml min−1) | 166 ± 30 | 136 ± 16* | 560 ± 131* | 511 ± 124*† |
FVC (units) | 158 ± 35 | 123 ± 20* | 496 ± 111* | 452 ± 105*† |
P < 0.05 vs. rest;
P < 0.05 vs. handgrip
P < 0.05 vs. no drug,
P < 0.05 vs. washout; n= 7 subjects.