Table 4.

Correlations Between Echocardiography Parameters and Lowest V̇E/V̇CO₂ Ratio^†

Variable	HFpEF		HFrEF
	β	P-value	β	P-value
CO at rest	−0.06	0.74	−0.05	0.76
CO during exercise	−0.41	0.03	−0.39	0.04
LVEF at rest	−0.16	0.41	−0.11	0.49
LVEF during exercise	−0.30	0.15	−0.13	0.47
e’ at rest	−0.19	0.51	−0.11	0.55
e’ during exercise	−0.36	0.04	−0.05	0.81
E/e’ at rest	0.26	0.26	0.01	0.98
E/e’ during exercise	0.44	0.04	0.07	0.70

^†After adjustment for age, BSA and plasma BNP. β, standardized beta coefficient. Abbreviations as in Table 1.