Ketones in Heart Failure With Reduced Ejection Fraction

500 mg/kg of ketone ester administered approximately 1 hour prior to the maximal exercise testing and 250 mg/kg administered approximately 30 minutes prior to submaximal exercise testing

ketone-free placebo administered approximately 1 hour prior to the maximal exercise testing and ketone-free placebo administered approximately 30 minutes prior to submaximal exercise testing