Exercise Physiology
Maryam Belbasi; Asieh Abbassi Daloii; Ahmad Abdi
Abstract
Aim: Type 2 diabetes and obesity are associated with changes in the body's metabolism, which is a determining factor in the development of insulin resistance. The aim of this study was to investigate the effect of six weeks high-intensity interval training on Vascular endothelial growth factor A (VEGF-A) ...
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Aim: Type 2 diabetes and obesity are associated with changes in the body's metabolism, which is a determining factor in the development of insulin resistance. The aim of this study was to investigate the effect of six weeks high-intensity interval training on Vascular endothelial growth factor A (VEGF-A) and Adipocyte fatty acid-binding protein (A-FABP) levels of adipose tissue in type 2 diabetic obese rats. Method: To implementation of this experimental research, 32 obese male wistar rats (weight 320±20 gr) randomly were divided into 4 groups including obese control, shem (obese), obese diabetic, obese diabetic - high-intensity interval training. Intraperitoneal injection of nicotinamide amide-streptozotocin was used to induction type 2 diabetes. high-intensity interval training program was performed 4 days a week for six weeks. VEGF-A and A-FABP levels in rat adipose tissue were measured using by ELISA kit. Results: the VEGF-A level in adipose tissue in the obese diabetic group was significantly lower than the obese control group (P=0.001). Also, A-FABP (P=0.001) and insulin resistance (P=0.004) was significantly higher in the obese diabetic group than the obese control groups. High-intensity interval training was associated with significant increase of VEGF-A and decrease A-FABP levels in adipose tissue and insulin resistance in obese diabetic rats (P=0.001). Conclusion: It seems that high-intensity interval training can help improve adipose tissue metabolic parameters and insulin resistance in obese diabetic rats.
A Khosravi; R Fathi; M Baghersalimi; A Rasouli
Abstract
Aim: Angiopoietin-like protein 8 (ANGPTL8) is a hepatocyte-derived circulating factor that regulates plasma triglycerides levels. The purpose of this study was to investigate the response of serum ANGPTL8 levels to acute exercise in physically active young men..
Method: Eleven healthy, active young ...
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Aim: Angiopoietin-like protein 8 (ANGPTL8) is a hepatocyte-derived circulating factor that regulates plasma triglycerides levels. The purpose of this study was to investigate the response of serum ANGPTL8 levels to acute exercise in physically active young men..
Method: Eleven healthy, active young males (aged 24±3.63 years, BMI 22.98±2 kg/m2) volunteered for this study. Acute exercise protocol comprising 2 series of 6×10 s sprinting cycling with maximal effort and 10 min active rest (cycling with intensity 65%–75% HRmax).Blood samples were obtained at fasting state, pre-exercise (30 min after breakfast ~365 kcal), immediately, 15, 30 and 45 min after exercise for measuring serum variables. The repeated measures of ANOVA and Bonferroni post-hoc test used to evaluate changes of parameters in the different times. The relationship between variables was assessed using the Pearson correlation coefficient.
Results: The results of present study showed that ANGPTL8, glucose, insulin, lactate, TG and LDL-C levels significantly changed in any time courses of this study (p<0.05). At fasting state, 30 min after breakfast (before exercise) and post-exercise, ANGPTL8 levels not correlated with glucose, insulin, lactate, TG, TC, HDL-C and LDL-C. There was no significant relationship between ANGPTL8 and weight, BMI and body fat percentage.
Conclusion: It seems that acute and short-term exercise is make significant changes in serum levels of ANGPTL8. On the other hand no significant relationship between ANGPTL8 and body composition may related to indvisual differences.
