The Effect of an Interval Exercise Period (HIIT) on MTNR1B Gene Expression, Insulin and Glucose Levels in Type 2 Diabetic Rats

MTNR1B genes expression is associated with increase of the of type 2 diabetes . The objective of this study was to evaluate the effect of 12 weeks of high intensity intermittent exercise on MTNR1B gene, glucose and insulin levels in diabetic rats In this study, 30 male Wistar rats weighing 220± 20g were divided into three groups control, diabetic and HIIT/diabetic groups. Administration of streptozotocin (STZ) and nicotinamide (NA) induced experimental diabetes in the rat. Interval Exercise (HIIT) performed for 12 weeks (5 times/30 mintes). The glucose concentration examined using oxidase colorimetric method, insulin by ELISA and gene expression was measured by RT-Real time PCR. All statistical analysis performed using s SPSS. Exercise program decreased fasting blood glucose and serum insulin in diabetic group compared to the control (P=0.001). Intensive interval training decreased MTNR1B gene expression in pancreatic tissue compared to diabetic control group (P=0.023). There was a significant correlation between the expression of MTNR1B and serum insulin (P=0.039, r=-0.84) The results showed that twelve weeks of high intensity intermittent exercise decrease blood glucose and increase serum insulin and decrease of MTNR1B gene expression in pancreatic tissue.