GIP concentration (A) and AUC (B) and GLP-1 concentration (C) and AUC (D) responses
to either a high-protein or a high-carbohydrate breakfast and a standardized lunch
in individuals with T2D. Arrows indicate when meals were consumed. Values are means
± SEMs, n = 12. *Different between breakfast and lunch,
P < 0.05; **Different from corresponding meal compositions,
P < 0.05; †Different by meal composition,
P < 0.05; ‡Different from corresponding lunch,
P = 0.07. CHO, carbohydrate breakfast; GIP, glucose-dependent
insulinotropic peptide; GLP-1, glucagon-like peptide 1; PRO, protein breakfast; T2D,
type 2 diabetes.