Table 3.
MSNA and hemodynamic measurements at baseline and during PEI and recovery
| Baseline | PEI, minute 1 | PEI, minute 2 | Recovery | ANOVA (F ratio; P value) | |
|---|---|---|---|---|---|
| MSNA burst frequency, bursts/min | 7.3 ± 1.6 | 20.9 ± 2.2* | 20.5 ± 2.5* | 10.8 ± 2.7* | 37.4;<0.0001 |
| MSNA bursts incidence, bursts/100 heartbeats | 12.9 ± 2.8 | 34.8 ± 4.2* | 33.7 ± 4.1* | 20.2 ± 5.5* | 24.3;<0.0001 |
| Heart rate, beats/min | 58 ± 2 | 60 ± 2* | 61 ± 2* | 57 ± 2 | 3.8;0.018 |
| SBP, mmHg | 121 ± 2 | 138 ± 4* | 139 ± 4* | 126 ± 3 | 31.0;<0.0001 |
| DBP, mmHg | 70 ± 1 | 79 ± 2* | 79 ± 2* | 70 ± 2 | 35.7;<0.0001 |
| BA diameter, mm | 4.01 ± 0.15 | 3.96 ± 0.14 | 3.92 ± 0.14* | 3.95 ± 0.16* | 5.4;0.003 |
| BA mean blood velocity, cm/s | 3.1 ± 0.2 | 3.5 ± 0.2 | 3.5 ± 0.3 | 3.2 ± 0.2 | 2.1;0.111 |
| BA antegrade velocity, cm/s | 3.5 ± 0.2 | 3.7 ± 0.2 | 3.7 ± 0.2 | 3.6 ± 0.2 | 0.6;0.629 |
| BA retrograde velocity, cm/s | 0.37 ± 0.08 | 0.18 ± 0.05* | 0.17 ± 0.06* | 0.35 ± 0.10 | 10.2;<0.0001 |
Values are means ± SE. PEI, postexercise ischemia.
*
Significantly different from baseline.