Table 2.

Cardiac output (CO) and total peripheral resistance (TPR) during baseline and speech task as a function of power and stability.

	Low Power		High Power
	Unstable	Stable	Unstable	Stable
Cardiac output
M (SD) Baseline M (SD) Speech M (SD) Reactivity 95% CI t d	2.92 (0.82) 3.49 (1.26) 0.57 (0.72) (0.19; 0.94) 3.26∗∗ 1.63	2.65 (0.91) 2.76 (1.02) 0.11 (0.36) (-0.07; 0.29) 1.33 0.65	2.90 (0.81) 3.10 (1.00) 0.29 (0.48) (0.04; 0.54) 2.46∗ 1.23	2.79 (1.21) 2.86 (0.97) 0.27 (0.35) (0.09; 0.44) 3.18∗∗ 1.59
Total peripheral resistance
M (SD) Baseline M (SD) Speech M (SD) Reactivity 95% CI t d	2425 (849) 2509 (1090) 51 (422) (-193; 294) 0.45 0.23	3207 (1707) 3549 (2172) 328 (611) (-25; 680) 2.01 1.12	2361 (723) 2789 (1147) 282 (446) (13; 552) 2.28∗ 1.32	3066 (1728) 3211 (1597) -2 (182) (-107; 103) -0.05 0.03

The reported t-tests test CV-reactivity against 0 (i.e., baseline); ^∗p < 0.05; ^∗∗p < 0.01; ^∗∗∗p < 0.001.