Figure 3. Effect of intraduodenal glucose infusion at a rate of either 1 kcal min⁻¹ (•) or 3 kcal min⁻¹ (▵) on blood glucose (left) and plasma insulin (right) concentrations (absolute values).

Data are means ±s.e.m. Significant differences: *change from baseline for 1 kcal min⁻¹; ** change from baseline for 3 kcal min⁻¹ and #3 kcal min⁻¹vs. 1 kcal min⁻¹ over time.