Table 1 .

Matching the ergometer with the desired information.

Condition or question	Preferred ergometer	Rationale
Aortic stenosis/insufficiency (unrepaired/repaired)	Cycle	Ischaemia detection on ECG easier because there is less motion artifact
Repaired transposition of great arteries	Cycle	Ischaemia detection on ECG easier
Repaired tetralogy of Fallot	Cycle	Arrhythmia assessment during exercise essential
Coronary artery anomaly, (repaired/unrepaired)	Cycle	Ischaemia detection on ECG easier
(Functional) single ventricle	Cycle/treadmill	Ischaemia and arrhythmia detection on ECG easier
Coarctation of the aorta (unrepaired/repaired)	Cycle	Blood pressure assessment more accurate
Exercise-induced asthma/bronchospasm/chest pain	Treadmill	Running more likely to induce symptoms than cycling
Aerobic capacity	Cycle/treadmill	Higher VO2max with treadmill than with cycle
Arrhythmia assessment/ Long QT syndrome	Cycle	Arrhythmia detection and measurement of QT interval on ECG easier because there is less motion artifact
Assessment of rate responsive pacemakers	Treadmill	Better activation of accelerometer-based sensors

Modified from Stephens et al.⁷