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Insulin time course. The curves show insulin levels at 0, 15, 30, 45, 60, 90, and 120 min. Oral glucose tolerance tests (OGTT) were performed at baseline, and after the low-carbohydrate high-fat (LCHF) intervention. A single bout of endurance exercise at 75–80% of peak heart rate (HRpeak) was done in the afternoon on test day 1 in both periods.
