Table 2. Patient characteristics in each cohort.

Characteristic	Total (n = 411)	Maximal exercise (n = 166)	Adequate anaerobic threshold (n = 317)
Age
At Fontan	3.4 ± 2.0	3.4 ± 2.1	3.5 ± 2.2
At exercise test	12.4 ± 3.2	13.9 ± 2.9	12.9 ± 3.1
Height (cm)	146.9 ± 16	154.5 ± 14	150 ± 15
Weight (kg)	42.5 ± 16	48.5 ± 16	44.9 ± 16
Male, n (%)	242 (59)	94 (57)	190 (60)
Dominant ventricle, n (%)
Right	126 (31)	51 (30)	99 (31)
Left and mixed	211 (68)	115 (69)	216 (69)
Sinus rhythm at rest, n (%)	283 (69)	116 (70)	216 (69)
Fenestration present at time of study, n (%)
Not present	327 (80)	127 (77)	244 (78)
Indeterminate	46 (11)	21 (13)	40 (13)
Present	37 (9)	15 (9)	29 (9)
L-loop, n (%)	79 (19)	41 (25)	66 (21)