Fig. 2.
Group summary data for absolute muscle sympathetic nerve activity (MSNA; burst frequency; ANOVA: condition P < 0.01, group P < 0.01, and interaction P < 0.01) and mean arterial pressure (MAP; ANOVA: condition P < 0.01, group P < 0.05, and interaction P = 0.835) at each 0.5°C decrease in mean Tsk are shown in A and B. The increases (delta value) in MSNA and MAP from baseline (i.e., mean Tsk 34°C) to mean Tsk 30.5°C are shown in C and D. ●, Young adults; ○, older adults. *P < 0.05 vs. young; †P < 0.05 vs. mean Tsk 34°C.