Document Type : Research Paper

Authors

1 Department of Exercise Physiology, Faculty of Sports Sciences, University of Isfahan, Isfahan, Iran

2 Professor of Exercise Physiology, Faculty of Sports Sciences, University of Isfahan, Isfahan, Iran

3 Professor of Biology, Biotechnology Research Institute, Royan Research Institute, Iran

Abstract

Pre-diabetic stressful conditions are status before the onset of type 2 diabetes, in which the blood sugar level is higher than normal and below the diagnostic criteria for type 2 diabetes. Therefore, the purpose of this study was to investigate the effect of endurance training on muscle glycogen storage in pre-diabetic mice. For this purpose, Fifteen male C57BL / 6 mice were randomly divided into two groups: mice fed a normal diet (ND, n= 5) and a high-fat diet (HFD, n=10) and then fed for 12 weeks. After diagnosing prediabetes induction by diagnostic tests in the HFD group, this group was into two groups: the pre-diabetic group (PD) and pre-diabetic mice along with endurance training (PD-Ex). The results showed a significant decrease in blood glucose levels and insulin resistance of HFD-Ex group compared to PD. The PAS technique showed an observational decrease in glycogen storage in the HFD group compared to the ND group, while endurance training increased it in the skeletal muscle of mice. The relative gene expression of the factors involved in glycogen storage such as AKT, PI3K, Gys1, and GSK3 as well as the gene LRRC8A showed significant changes (p <0.05) between the ND group compared to the HFD group, showing the glycogen storage signaling pathway is disturbed. However, endurance training (PD-Ex) has resulted in a significant improvement in glycogen synthase gene levels. In general, Endurance training seems to improve the negative effects of pre-diabetic conditions due to a high-fat diet.

Keywords

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