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Objective: The aim of this study was to determine the effect of 12 weeks resistance training on G6Pase expression in liver cells, as well as glucose and insulin levels in type 2 diabetic rats. Materials and Methods: In this experimental study, 16 wistar rats were selected as the research sample. After injection of nicotinamide and streptozocin to induce diabetes, the rats were randomly divided into two groups of resistance training and control. The resistance group participated in a course of resistance training for up to 12 week in five sessions per week, with intensity of 75% and a time of 30 to 45 minutes. Finally, 48 hours after the last exercise session, G6Pase expression in liver cells, as well as glucose and insulin levels were measured in both groups. Results: Comparison of resistance and control training groups showed a decrease in glucose levels (P-value= 0.001) and increased insulin levels (P-value= 0.001). Exercise also reduced the expression of G6Pase in liver cells in the resistance training group (P-value= 0.001). Conclusion: Based on the results of the study, it is recommended that diabetics use resistance training under the supervision of a specialist to reduce the negative effects of diabetes.

Objective: The use of non-enzymatic antioxidants in food supplements and proper exercise can have a positive effect on decreasing oxidative stress by free radical hunting. The purpose of this study was to investigate the effect of aerobic training and L-carnitine supplementation on some of the oxidative stress factors in the liver of diabetic rats. Materials and Methods: In this experimental study, 45 male wistar rats (200-300 gr) were randomly divided into six groups: 1) sham group, 2) healthy control group 3) diabetic control group, 4) diabetic group receiving L-carnitine, 5) diabetic group of aerobic training, 6) diabetic group of aerobic training and receiving L-carnitine. The aerobic exercise protocol included six weeks, five sessions per week on the treadmill. After intervention, malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione peroxidase (GPX) levels were determined in liver tissue. Results: Six weeks of aerobic exercise had a significant effect on MDA factor in hepatic tissue in diabetic rats (P-value: 0.024). However, supplementation (P-value: 0.868) and combined intervention of aerobic exercise and supplementation of L-carnitine (P-value: 0.465) did not have the significant effect on MDA factor. Also, 6 weeks of aerobic training, supplementation of L-carnitine, and combined intervention had no significant effect on SOD and GPX factors of hepatic tissue in diabetic rats (P-value> 0.05). Conclusion: L-carnitine supplementation with regular exercise can have beneficial effects on hepatic antioxidant defense system in rats with type 2 diabetes.

Objective: This study aimed to investigate the effects of moderate to high-intensity aerobic exercise on HbA1c (Glycated hemoglobin), FBS (fasting blood sugar) and cognitive function in mild cognitive impairment prediabetes patients. Materials and Methods: Seventeen elderly mild cognitive impairment (age 55-70) men and women were selected and were randomly divided into 2 groups as aerobic (n=10) and control (n=10). Six subjects were excluded during the study. Finally, 14 subjects were continued the exercise program. Assessments were done at baseline and 12 weeks after intervention. The 12-weeks aerobic exercise program consisted of 90 min sessions in length 3 days per week under the supervision of the exercise specialist. Cognitive function, HbA1c, and FBS were evaluated. The differences in all variables (one way ANOVA), correlation (Pearson single correlation) and relative changes between baseline and 12 weeks (paired T-tests) were investigated. Results: HbA1c, FBS decreased significantly in the aerobic group whereas cognitive function increased significantly after 12 weeks aerobic (P-value< 0.05 for all). Also, the change of cognitive function was significantly associated with a change of FBS (r= -0.84) after a 12-week aerobic exercise (P-value: 0.011). Differences between groups in HbA1c, FBS and cognitive function (Mini-Mental State Examination) were not significant. Conclusion: Aerobic exercise may improve HbA1c, FBS and subsequently cognitive function in prediabetes elderly subjects. Therefore, a decrease in glycemic indicators could lead to improve cognitive function.

Objective: The study aimed to determine the effect of eight weeks high intensity interval (HIIT) and sub-maximal continuous trainings on plasma betatrophin level in diabetic rats treated with metformin. Materials and Methods: In this experimental study, 42 diabetic wistar rats were divided into six groups (n=7): diabetic control (C), diabetic control + metformin consumption(C+M), diabetic HIIT, diabetic HIIT + metformin (HIIT+M), diabetic sub-maximal continuous training (SMCT), and diabetic sub-maximal continuous training + metformin (SMCT+M). Metformin was given 150 mg/kg/day by gavage every day, 48 hours after the end of the last training session, the rats were sacrificed. Then blood glucose and glycated hemoglobin (HbA1c) levels were measured. One-way ANOVA test was used for statistical analysis of data. Results: The level of plasma betatrophin was significantly different in the HIIT (P-value= 0.01) and C+M (P-value= 0.001) groups compared to C group. Blood glucose was significantly decreased in all training groups with or without betatrophin compared with the diabetic control group (P-value= 0.001). However, there were no significant changes between glucose levels in HIIT, HIIT+M, SMCT, and SMCT+M groups but SMCT showed most reduction in blood glucose. Conclusion: Treatment with metformin did not change blood glucose but two types of exercise training with high and moderate intensity reduced blood glucose thus exercise can be a good alternative modality rather than taking medicine.

Objective: Type2 diabetes (T2DM) as a metabolic disease is associated with absolute or relative insulin deficiency, increased blood glucose and carbohydrate metabolism disorders which is considered as risk factors of other diseases such as cardiovascular diseases. In the present study, the effect of eight weeks of high intensity interval training (HIIT) on lipid profile (TG, LDL and HDL), glucose and glycated hemoglobin (HbA1c) levels in streptozotocin-induced diabetic rats was investigated. Materials and Methods: Sixty male Wistar rats were randomly divided into six groups: healthy, diabetic, diabetic + metformin, healthy + training, diabetic + training and diabetic + training + Metformin. The training groups performed eight weeks of HIIT. Metformin was given 150 mg / kg to the rats by gavage every day. T2DM was induced by injection of nicotinamide and streptozotocin and 48 hours after the end of last training session, the rats were sacrificed. Then lipid profile, blood glucose and HbA1c were measured. One way analysis of variance (ANOVA) test was used for statistical analysis. Results: The results of this study showed that TG levels were low in diabetic training and diabetic + training + metformin groups compared to the diabetic group (P-value: 0.0001). There weren't any significant differences between total cholesterol, LDL-c and HDL-c levels between groups. Blood glucose levels were significantly lower in diabetic + training and diabetic + training + metformin groups compared to diabetic controls (P-value: 0.0001). HbA1c levels were significantly lower in diabetic + training and diabetic + training + metformin than in diabetic group (P-value: 0.0001). Conclusion: According to the results of this study, it seems that severe periodic exercise can be considered as an important strategy for improving lipid profiles and blood glucose control in T2DM patients.