Home-based Cardiovascular Rehabilitation in Young Patients With Congenital Heart Disease: the "Muscle Your Heart" Program

Inclusion Criteria: * Indication for home cardiovascular rehabilitation given by the referring cardiologist as part of routine care. * Follow-up for congenital heart disease in the ACC-CHD classification. * Patient aged 8 to 25 years at the time of inclusion. * Consent of the adult patient or the parents or legal guardians of the minor patient. * Social security affiliation (excluding AME). * VO2max and/or SV1 \< -1.64 z-score for patients aged 8 to 17 years or VO2max \< 80% and/or SV1 \< 55% of theoretical VO2max for patients aged 18 to 25 years Exclusion Criteria: * Unstable and/or severe heart failure: severe heart failure (NYHA functional class IV), recent decompensated heart failure requiring hospitalisation and/or any significant change in medication (\< 3 months before inclusion), systolic ventricle dysfunction (left ventricular or systemic ventricular ejection fraction \< 50%). * Severe hypoxemia: pulse oxygen saturation (SpO2) at rest \< 85%, and/or SpO2 at exercise \< 80%, and/or patient requiring oxygen therapy. * Pulmonary hypertension as defined by the 2020 ESC guidelines, whatever the aetiology. * Significant systolic right ventricle (sRV) hypertension (Srv pressure \> 50% of systemic systolic pressure). * Uncontrolled arrhythmia: symptomatic arrhythmia treated or untreated at rest and/or during exercise, treated arrhythmia with sustained supraventricular or ventricular tachycardia on ECG monitoring or during exercise and/or CPET, occurrence or aggravation of…