Table 4.
Changes from the baseline during mild heating
| CHF | Aged | Young | P | |
|---|---|---|---|---|
| ΔSBP mmHg | −9.1 ± 2.3 | −4.1 ± 1.9 | −3.4 ± 2.0 | 0.121 |
| ΔDBP mmHg | −5.7 ± 1.3 | −4.2 ± 1.7 | −4.9 ± 1.0 | 0.725 |
| ΔMAP, mmHg | −6.8 ± 1.5 | −4.1 ± 1.5 | −4.3 ± 1.0 | 0.278 |
| ΔHR, beats/min | 2.8 ± 2.3 | 6.2 ± 1.0 | 7.2 ± 1.3 | 0.153 |
| ΔMSNA, BR | −5.2 ± 1.6* | −2.1 ± 1.7 | 2.7 ± 1.8 | 0.008 |
| ΔMSNA, BI | −8.3 ± 2.4* | −8.7 ± 2.3* | 1.7 ± 2.7 | 0.003 |
| ΔMSNA, Total | −190 ± 44* | −52 ± 33 | 84 ± 45 | <0.001 |
| ΔSkBFarm, % | 23 ± 7*† | 93 ± 32 | 127 ± 21 | <0.001 |
| ΔCVCarm, % | 34 ± 8*† | 104 ± 35 | 139 ± 22 | 0.011 |
| ΔTsk, °C | 3.3 ± 0.3 | 3.7 ± 0.2 | 3.9 ± 0.2 | 0.176 |
| ΔTcore, °C | 0.20 ± 0.03* | 0.10 ± 0.05 | 0.04 ± 0.05 | 0.031 |
| ΔTbody, °C | 0.5 ± 0.1 | 0.5 ± 0.1 | 0.4 ± 0.1 | 0.401 |
| ΔSR, mg/cm2/min | 0.132 ± 0.042 | 0.056 ± 0.014 | 0.112 ± 0.051 | 0.426 |
| Period, min | 11.6 ± 1.6*† | 16.1 ± 1.2 | 14.1 ± 1.3 | <0.001 |
Values are means ± SE. Units for muscle sympathetic nerve activity: BR, bursts/min; BI, bursts/100 heartbeats; total, U/min. SBP, systolic blood pressure; DBP, diastolic blood pressure; HR, heart rate.
*
P < 0.05 vs. young control subjects.
†
P < 0.05 vs. age-matched control subjects.