The effect of resistant starch on metabolic indices of type 2 diabetes

Dundas, Stacey M.
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University of Guelph

Resistant starch (RS) consumption may modulate postprandial responses. Using a randomized crossover design, 12 Type 2 Diabetics ingested four different bagel treatments: A) without RS (50g available carbohydrate); B) with RS flour (same total carbohydrate as A) (C) with RS flour (same available carbohydrate as A) and D) with the same RS as B and available carbohydrate as A and C. A standard 2nd meal was ingested 3h later. After the initial meal B had a lower glucose incremental area under the curve (iAUC) than C (P=0.006), D (P=0.003) and A (trend; P=0.07), and a lower insulin iAUC than A (P=0.001) and C (P=0.026). There was a positive correlation between GIP and insulin iAUCs (P<0.05) after the 2nd meal, while C had the steepest slope following both meals. While this was the only apparent relationship between RS and the metabolic biomarkers, replacing available carbohydrate with RS positively affected carbohydrate management.

resistant starch, consumption, modulate, postprandial response, Type 2 Diabetes, metabolic biomarkers