The Effect of Eight- Week High-Intensity Interval Training on the Expression of Cardiac Angiostatin and Focal adhesion Kinase Proteins at Left Ventricle in Diabetic Rats

Background: Diabetes can increase cardiovascular disease by altering the equilibrium between angiogenic stimulants and inhibitors of angiogenesis. In this study, we investigated the effect of High-Intensity Interval Training (HIIT) on angiostatin and focal adhesion kinase (FAK-1) in left ventricle cardiomyocytes in diabetic rats. Methods: In this experimental study, 24 male Wistar rats were randomly divided into three equal groups (n=8): Control-Normal (C), Diabetes (D), and Diabetes-training (D+T). Diabetes was induced by the injection of streptozotocin in male rats. The Training group has performed a HIIT program on a motor-driven treadmill for eight weeks. At the end of eight weeks-- heart tissue samples were collected. Data were analyzed using ANOVA and Tukey post hoc at P<0.05. Results: The results showed that induction of diabetes increased the expression of angiostatin (P=0.006), and serum glucose (P=0.001) and decreased FAK-1 (P=0.001). HIIT significantly reduced the level of angiostatin (P=0.006) and glucose (P=0.001) in diabetic rats. There was also a significant increase in FAK-1 in the D+T group (P=0.001). Conclusion: HIIT decreased the protein expression of angiostatin and glucose and increased FAK-1 in cardiomyocytes. HIIT seems to reduce the vascular complications of diabetes in rats by altering these parameters that affect angiogenesis and blood glucose.