Table 2.

O₂ pulse parameters

Parameter	Healthy controls	Cohort A Fontan	Cohort B Fontan
Peak VO2 (mL/kg/min)	36.0±10.3	25.1±7.1*	20.9±7.1*
O2 pulsePEAK (mL/beat)	13.2±4.1	9.8±2.2*	9.3±2.9*
O2 pulseAT (mL/beat)	10.9±3.5	8.4±1.8*	8.7±2.8*
O2 pulse slopePEAK	0.01±0.005	0.008±0.003*	0.009±0.005*
O2 pulse slopeAT	0.01±0.006	0.01±0.004*	0.01±0.0005†

*Compared with healthy controls, p<0.01.

†Compared with healthy controls, not statistically significant (p>0.05).

AT, anaerobic threshold.