Combined training and hormones/enzymes with insulinotropic actions in individuals with overweight and type 2 diabetes mellitus: A randomized controlled trial

The incretins (glucose‐dependent insulinotropic polypeptide [GIP] and glucagon‐like peptide‐1 [GLP‐1]), along with amylin/islet amyloid polypeptide (IAPP) and insulin‐degrading enzyme (IDE), are hormones/enzymes that have been pharmacological targets, such as dipeptidyl peptidase‐4 (DPP‐4) inhibitors, due to their insulinotropic actions. Physical training is recommended as a treatment for type 2 diabetes mellitus (T2DM); however, its effects on the concentrations of these hormones/enzymes are not well known. Thus, the present study aimed to evaluate the effects of combined training (CT) on the concentrations of hormones/enzymes with insulinotropic actions in individuals with T2DM and overweight. Individuals of both sexes with T2DM (age 51.73 ± 4.19 years; body mass index [BMI] 29.46 ± 3.39 kg/m2) were randomly distributed in the control group (CG, n = 17) and the combined training group (CTG, n = 17). The CT consisted of strength followed by erobic training, 3 times/week, for 16 weeks. Functional variables, body composition, and serum biochemical analyses (clinical markers, GLP‐1, GIP, DPP‐4, amylin/IAPP, and IDE) were evaluated. The CTG showed a decrease in GLP‐1 (pre: 32.8 ± 12.1, post: 28.4 ± 13.5, and p = 0.04) in the group/time analysis. In the evaluation of the Δ% of variation, CTG presented a decrease for GLP‐1 (−9.3%; p = 0.03) and amylin/IAPP (−13.4%; p