Table 1 Effects of muscle contraction and each α-antagonists on heart rates and blood pressures
Pre-incubation | Post-incubation | After 1 set | After 5 sets | After 10 sets | |
|---|---|---|---|---|---|
MAP (mmHg) | |||||
0.2 ms | 112 ± 14 | – | 116 ± 5 | 107 ± 10 | 101 ± 11 |
4 ms (cont) | 111 ± 4 | – | 113 ± 5 | 115 ± 8 | 115 ± 9 |
α1 Blockade | 109 ± 9 | 109 ± 9 | 107 ± 8 | 99 ± 10 | 98 ± 6 |
α2 Blockade | 93 ± 6 | 103 ± 6 | 107 ± 9 | 109 ± 6 | 113 ± 9 |
α1, α2 Blockade | 96 ± 7 | 96 ± 8 | 98 ± 8 | 95 ± 12 | 87 ± 5 |
Heart rate (bpm) | |||||
0.2 ms | 394 ± 32 | – | 382 ± 27 | 386 ± 35 | 377 ± 38 |
4 ms (cont) | 400 ± 33 | – | 378 ± 42 | 409 ± 32 | 407 ± 34 |
α1 Blockade | 410 ± 28 | 399 ± 21 | 400 ± 23 | 356 ± 17 | 377 ± 38 |
α2 Blockade | 351 ± 11 | 353 ± 6 | 363 ± 12 | 368 ± 8 | 378 ± 5 |
α1, α2 Blockade | 359 ± 19 | 379 ± 33 | 370 ± 37 | 371 ± 34 | 393 ± 33 |