| CHD | Congenital heart disease |
| TGA | Transposition of the great arteries |
| TOF | Tetralogy of Fallot |
| Fontan | Functional single ventricle |
| ECG | Electrocardiography |
| O2 | Rate of oxygen consumption |
| RER | Respiratory exchange ratio |
| VAT | Ventilatory anaerobic threshold |
| MVPA | Moderate-to-vigorous physical activity |
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