Description: Excel file containing data for the paper “β-Hydroxybutyrate Accumulates in the Rat Heart during Low-Flow Ischaemia with Implications for Functional Recovery”. The first sheet details left ventricular metabolite concentrations (relative to pre-ischaemia unless specified) in hearts perfused aerobically for 32 min at 100 mmHg in the Langendorff mode, with and without 32 min 0.32 ml.min-1gww-1 low-flow ischaemia and/or 32 min aerobic reperfusion at 100 mmHg. Subsequent sheets detail ischaemic LV metabolite concentrations in hearts administered 50 mM sodium oxamate or vehicle, and hearts administered 2.5 µM hymeglusin or vehicle. Further sheets display left ventricular developed pressure and rate pressure product over 96 minutes in hearts administered vehicle and hymeglusin, or vehicle and sodium oxamate, and subjected to 32 min aerobic perfusion, 32 min low-flow ischaemia and 32 min aerobic reperfusion. Additional sheets also detail buffer levels of metabolites across these 96 min Langendorff perfusion protocols.