Background Peak oxygen consumption (peak V̇O2$$ \dot{\mathrm{V}}{\mathrm{O}}_2 $$) is routinely measured in people who have congenital heart disease and is reported as a percentage of predicted value. based upon age‐ and sex‐matched normative reference values (NRVs). This study aimed to identify which NRVs are being used. assess whether NRVs are being applied appropriately. https://cosmeticssquadets.shop/product-category/electrical-muscle-stimulators/