Tracer enrichments and glucose kinetics over 120 min OGTT.

<p><b>(A) Enrichment of 6, 6-[²H₂] and [U-¹³C] glucose in plasma.</b> Average for all 3 groups presented, <i>n</i> = 24. MPE (%): mole percent excess. (B) Total rate of glucose appearance in plasma (R_a). (C) Contribution of exogenous glucose appearing from the gut (R_a gut) and endogenous glucose production (EGP) to the R_a Total; solid lines indicate R_a gut, dashed arrows indicate EGP. (D) Rate of glucose disappearance from plasma (R_d). Means with different subscripts are significantly different from each other. *: significantly lower R_d for CON compared with EX and EX+PRO. Values are means ±SEM; <i>n</i> = 8 per group.