Showing 14 results for High Intensity Interval Training
Karim Azali Alamdari, Mousa Khalafi,
Volume 18, Issue 1 (1-2019)
Abstract
Background: Fibroblast growth factor 21 (FGF21) plays an important role in regulation of energy metabolism and insulin resistance; however, the synergistic effects of high intensity interval training (HIIT) on FGF21 and insulin resistance are not elucidated which was focused in this study.
Methods: This experimental research was conducted by pretest- posttest design with control group. In this study, 24 obese men were assigned into two groups including
HIIT (n=12, age: 39.83 ± 5.63 years, weight: 100.83 ± 5.81 kg and body mass index: 32.73 ± 2.8 kg/m2) and Control (n=12, age: 39.41 ± 5.23 years, weight: 100.08 ± 4.71 kg, and body mass index: 32.34 ± 1.43 kg/m2). The HIIT group experienced eight weeks of intensive exercises (three sessions per week, four bouts in each session at the intensity of 85-90% of maximum heart rate (MHR) with 3-minute active rest intervals (at 60-50% of MHR) between exercise bouts. Blood samples were collected at baseline and also 48 hours following to the last training session. The data were compared using paired and independent samples t tests.
Results: HIIT resulted in a contemporary reduction of plasma glucose and serum insulin and FGF21 and also improved HOMA index (P˂0/05).
Conclusion: High intensity interval training plays an effective role in improvement of insulin resistance and reduction of serum FGF21 in obese subjects, which may be due to an improved FGF21 resistance.
Saleh Afrasyabi, Seyed Mohammad Marandi, Mehdi Kargarfard,
Volume 18, Issue 1 (1-2019)
Abstract
Background: The aim of this study was to investigate the effect of 12 weeks of high intensity training on IL-
6, GLP-1 and lipid profiles in type 2 diabetic patients
Methods: 80 participants (40-50 years old) volunteered to participate in the study and divided into eight groups (four groups of severe periodic exercises and four uncontrolled control groups). Blood samples were collected and analyzed for measuring IL-6, GLP-1, lipid profile and glycemic index before and after weeks 4, 8 and after the training program.
Results: After 12 weeks of training, the effect of time and interaction between time × group on GLP-1 and IL-6 variables was statistically significant. Also, there was a significant difference between groups based on 12 weeks of training in these indices. Lipid profile was significantly improved in type 2 diabetic and glycemic control in obese and non-diabetic groups that had 12 weeks of high intensity interval training.
Conclusion: Overall, high intensity interval training, through changes in various mechanisms, lead to improvement in lipid and glycemic disorders, inflammation and appetite in obese people with type 2 diabetes. Hence, according to the findings of the study, researchers suggest that performing high intensity interval training can lead to significant improvements in obese subjects (with and without type 2 diabetes).
Masoud Jokar, Mohammad Sherafati Moghadam,
Volume 18, Issue 6 (9-2019)
Abstract
Background: Diabetic cardiomyopathy is a complication type 2 diabetes mellitus that can lead to cardiac muscle autophagy through the proteins FOXO3a and Beclin-1. Therefore, the aim of this study is to investigate the effect of 8 weeks High intensity interval training (HIIT) on the content of FOXO3a and Beclin-1 proteins in heart muscle tissue of Sprague-Dawley rats with type 2 diabetic rats.
Methods: In this experimental study, 12 two-month-old Sprague-Dawley rats with a mean weight of 270±20 g were selected. After diabetic induction with STZ and Nicotinamide, rats were randomly assigned to two groups, diabetic training (6 heads) and diabetic control (6 heads). The training group trained for 4 days a week in accordance with the training program (each session 42 minutes, 10-30 m/m) for 8 weeks, while the control group did not have any training program. Also, rats did not receive any insulin treatment during the study period. The independent t-test was used to analyze the data. Significance level is considered p≤0.05.
Results: Eight weeks of HIIT training resulted in a significant decrease in FOXO3a (P=0.008) and Beclin-1 (P=0.002) proteins content in diabetic training group compared to diabetic control group.
Conclusion: It can be said that eight weeks of HIIT training decreased the FOXO3a/Beclin-1 autophagy pathway by decreasing FOXO3a and
Beclin-1 protein content. Therefore, the use of HIIT exercises may be useful for diabetic subjects who are prone to diabetic cardiomyopathy.
Maryam Seyed Heaydari, Abbas Aadeghi, Ali Hemati Afif,
Volume 19, Issue 2 (1-2020)
Abstract
Background: Cytokines are immune related factors. Production of pro inflammatory cytokines in diabetic patients is increased, which is exacerbated by vigorous training. This study investigates the response of serum IL-2 and IL-4 to eight-week high Intensity Interval Training (HIIT) with caffeine intake on inflammatory and anti-inflammatory responses in diabetic rats.
Methods: In a clinical-interventional animal study, 50 male rats were randomly assigned to 5 equal groups (control group (C), diabetes group (D), diabetes + caffeine group (D+Ca), diabetes + training group (D+T), diabetes + training + caffeine group (D+Ca+T)) and subjected to 8 weeks of caffeine supplementation (70 mg / kg of caffeine powder was injected five days each week) and 8 weeks of 5 sessions per week with 6 to 12 times, 2-min intervals with intensity of 85-90% of maximal speed. 48 hours after the last training session, immunological factors including IL-2 and IL-4 were measured. Statistical analysis of variables was performed using One-way ANOVA and Tukey tests at the significant level (P<0.05).
Results: The results showed that (D+Ca) group had the lowest IL2 in comparison with (D) group (P= 0.001). IL-4 had the highest in (D+Ca) and (D+Ca+T) groups (P = 0.001). But these differences were not statistically significant between (D+Ca) and (D+Ca+T) groups (P= 0.67).
Conclusion: It seems that caffeine to play a role in improving the status of IL-2 and IL-4 in streptozotocin-induced diabetes, but HIIT exercises are not effective in this regard.
Amir Akbari, Hamid Mohebbi, Elma Tabari,
Volume 19, Issue 2 (1-2020)
Abstract
Background: The aim of this study was to investigate the effects of high fat diet-induced obesity and interval and continuous exercise training on visceral fat SIRT1 and insulin resistance in male rats.
Method: Forty male rats were divided into two groups: high-fat diet (HFD; n=32) and standard diet (C; n=8). After 10 weeks inducing obesity, eight rats from the HFD and C groups were sacrificed, and rest of obese rats were randomly divided into three groups: obesity control (OC), moderate intensity continuous training (MICT) and high intensity interval training (HIIT). The HIIT and MICT protocols were performed for 12 weeks and 5 sessions per week. Visceral fat samples were collected to measure protein levels of SIRT1 by western.
Results: Induction of obesity was associated with a significant decrease in visceral fat SIRT1 and an increase in insulin resistance (P˂0.05). In contrast, both HIIT and MICT significantly increased visceral fat SIRT1 protein levels (P˂0.05), whereas HIIT effects were significantly higher (P˂0.05). Also, both HIIT and MICT protocols improved insulin resistance (P˂0.05).
Conclusion: Exercise training is likely to play an important role in regulation of visceral fat SIRT1 and because of that may be effective in improving insulin resistance. The increase in SIRT1 also appears to be dependent on the intensity of exercise training.
Sepideh Salehi, Niku Khosravi, Maryam Delfan,
Volume 19, Issue 5 (6-2020)
Abstract
Background: The prevalence of type 2 diabetes is rapidly increasing in the world. As a result of this disease, long-term insulin resistance develops, as a result of which pancreatic beta cells are destroyed and disappear, as a result insulin is not released. Recently, a protein called lipasin, which is responsible for signaling the liver to beta cells, has been discovered, and previous reports have shown that lipasin/betatrophin increases pancreatic β cell proliferation. Therefore, the aim of this study was to investigate the effect of eight weeks of high intensity interval training (HIIT) and endurance training on lipasin gene expression in rats with type 2 diabetes.
Methods: The study was performed on 25 Wistar rats with a mean weight of 160±10 g and age of 8 weeks. After induction of diabetes, the rats were randomly divided into three groups of 6: control and endurance and HIIT. And exercise was performed for eight weeks (5 sessions per week). QRT-PCR technique was used to evaluate changes in hepatic lipasin gene expression.
Results: The present study showed that after eight weeks of endurance training and HIIT, the expression of lipasin gene in the liver of rats in the training group increased significantly compared to the control group (P = 0.037); Also, a significant negative correlation was observed between lipasin gene expression and insulin resistance index in the exercise group compared to the control group (r = -0.605, P = 0.037).
Conclusion: It seems that performing eight weeks of endurance training and HIIT, by increasing the expression of lipasin gene can increase beta cells in diabetic patients and may be an effective non-pharmacological intervention to reduce the symptoms of this disease.
Morteza Khalili, Abbas Sadeghi, Mohammad Javad Javad Maleki,
Volume 19, Issue 5 (6-2020)
Abstract
Background: The relationship between low PGC-1α expression and several metabolic diseases such as diabetes and obesity has been identified. This study investigates the effect of eight-week high intensity interval training (HIIT) and caffeine intake on mitochondrial biogenesis in soleus muscle in diabetic rats induced Streptozotocin.
Methods: In a clinical-interventional animal study, 50 male rats were randomly assigned to 5 equal groups (control group(C), diabetes group(D), diabetes + caffeine group(D+Caf), diabetes + training group(D+T), diabetes + training + caffeine group(D+CAF+T)) and subjected to 8 weeks of caffeine supplementation (70 mg / kg of caffeine powder was injected five days each week) and 8 weeks of 5 sessions per week with 6 to 12 times, 2-min intervals with intensity of 85-90% of maximal speed. Blood was collected directly from the left ventricle to measure blood glucose levels. The soleus muscle of the left leg was extracted and PGC-1α measured by Western Blot method. Independent t-tests, two-way analysis of variance, and Eta squared (p <0.05) were used to analyze the data.
Results: The results showed that induction of diabetes significantly increased blood glucose (P <0.01) and significantly decreased mRNAPGC-1α (P = 0.002). Also, both high-intensity interval training (p = 0.001) and caffeine supplementation (p = 0.03) significantly increased mRNAPGC-1α.
Conclusion: Based on the results of this study, it is possible to suggest the use of HIIT and caffeine consumption as an effective intervention in increasing mitochondrial biogenesis in diabetics. However, a clear statement in this regard requires further research in this area.
Farzaneh Karimi, Farhad Daryanoosh, Mohsen Salesi, Javad Nemati,
Volume 19, Issue 6 (8-2020)
Abstract
Background: Obesity and type 2 diabetes can impair the function of cells, including CREB and CRTC2 proteins, which are important for regulating adipose tissue metabolism. Therefore, the purpose of the present study was to investigate the effect of eight weeks of high intensity interval training (HIIT) on CREB and CRTC2 proteins levels in subcutaneous adipose tissue of obese rats with type 2 diabetes.
Methods: In this experimental study, 12 head two-month-old Sprague-Dawley rats with a mean weight of 300±20 g were selected. After diabetic induction with Streptozotocin and Nicotinamide, rats were randomly assigned to two groups, diabetic training (6 heads) and diabetic control (6 heads). The training groups performed the training program 4 days a week for 8 weeks, including 5
interval 4-minute with an intensity of 85 to 95% of the maximum speed, and 3-minute active rest periods with an intensity of 50 to 60% of the maximum speed; SPSS software version 23 and independent t-test were used to analyze the data.
Result: After eight weeks of HIIT training, no significant change in CREB protein level was observed in the
training group compared to the control (P<0.22); However, a significant increase in CRTC2 protein level was observed in the training group compared to the control (P<0.005);
Conclusion: HIIT training did not result in a change in CREB protein level. But, it was able to increase the CRTC2 protein level, which could lead to the regulation of adipose tissue metabolism in diabetic subjects.
Maryam Delfan, Malihe Rabiee, Raheleh Amadeh Juybari,
Volume 20, Issue 3 (2-2021)
Abstract
Background: Imbalance of apoptotic factors plays important role in pathogenesis of diabetes. Considering the role of curcumin supplementation and high-intensity interval training (HIIT) on these factors, the aim of this study was to investigate effects of four weeks of HIIT with curcumin supplementation on Bax and Bcl-2 gene expression in the soleus muscle of diabetic rats.
Methods: Present study was experimental research. 30 male Wistar rats were divided into one normal control (NC), and four diabetic groups: control (DC), supplement (SDC), high-intensity interval training (DHIIT) and high-intensity interval training supplement (SDHIIT). The training protocol was performed five days a week for four weeks, which included five to seven two-minute intervals at 80 to 90% of maximum power until exhaustion and one-minute recovery at 30% of maximum power until exhaustion. At the same time, Curcumin gavage at a dose of 100 mg/kg was performed daily. Bax and BCL-2 gene expression levels were measured by the qReal-TimePCR method and data were analyzed by two-way analysis of variance at a significant level of p≥0.05.
Results: Bcl-2 gene expression was significantly increased in DHIIT and SDHIIT groups compared to DC (P= 0.000). Also, a significant decrease in Bax gene expression was observed in DHIIT and SDHIIT groups compared to DC (P=0.000). There was a significant difference between DHIIT and SDHIIT in Bcl-2 (P=0.000) and Bax (P=0.013) gene expression.
Conclusion: It seems that HIIT in combination with curcumin supplementation, is more effective in improving the balance between apoptosis factors than any of these interventions alone.
Neda Aghaei Bahmanbeglou, Reza Salboukhi, Mohammad Sherafati Moghadam,
Volume 21, Issue 2 (7-2021)
Abstract
Background: FOXO family proteins are important factors in autophagy
pathway. Protein kinase-B is an important regulator for this family that can be regulated through exercise training. Therefore, the aim of this study is to investigate the effect of protein
kinase-B (PKB) on FOXO autophagy family proteins (FOXO1 and FOXO3a) following
high intensity interval training (HIIT) in the left ventricle of the heart of diabetic rats by streptozotocin (STZ) and nicotinamide.
Methods: In this experimental study, 12 two-month-old Sprague-Dawley rats with a mean weight of 270±20 g were selected. After type 2 diabetes induction with STZ and Nicotinamide, rats were randomly assigned to two groups, diabetic training (6 heads) and diabetic control (6 heads). The training group trained for 4 days a week in accordance with the training program for 8 weeks. SPSS software version 23 and independent t-test were used to analyze the data. Significance level is considered p≤0.05.
Results: HIIT training resulted in a significant increase in PKB protein content between training and control groups (P=0.0001). In contrast, a significant decrease in protein content of FOXO1 (P=0.003) and FOXO3a (P=0.006) was observed between the training and control groups.
Conclusion: It seems based on the results
HIIT with increasing and regulating PKB leads to a decrease and inactivation of FOXO1 and FOXO3a proteins in the hearts of diabetic subjects. Inhibition of these proteins can prevent excessive cardiac autophagy in diabetic subjects.
Sedigheh Babaee, Maghsoud Peere, Mohammad Ali Azarbayjani, Maryam Delfan,
Volume 23, Issue 1 (5-2023)
Abstract
Impaired insulin function with exogenous changes is a major cause of heart failure. The purpose of this study was to investigate the effect of four weeks of high intensity interval training with curcumin supplement on the expression of IRS-1 and IRE-1α gene in the Left ventricle of type 2 diabetic rats.
Methods: In the present experimental study, 30 male mice with diabetes were divided into five groups of 6; high intensity interval training (HIIT), High intensity interval Training+Curcumin(S+HIIT), Diabetic control+curcumin(S+DC), Diabetic Control (DC), Normal control (NC). The High intensity interval training protocol was performed five days a week for four weeks. Curcumin gavage at a dose of 100 mg/kg was performed daily. The expression of IRS-1 and IRE-1α were measured by the qReal-TimePCR method, and data were analyzed by one-way ANOVA at the alpha level of 0.05.
Results: IRS-1 gene expression in the S+HIIT group compared to the DC (P=0.003) and S+DC (P=0.001) groups and in the HIIT group compared to the DC (P=0.002), and S groups +DC had a significant decrease (P=0.019). IRE-1α gene was significantly decreased in S+HIIT group compared to DC (P=0.003), S+DC (P=0.001) and HIIT (P=0.008) groups.
Conclusion: It seems that HIIT with curcumin supplement can reduce the process of myocardial apoptosis in diabetic patients by improving metabolic conditions and genetic factors.
Moazameh Malekpour, Rasoul Rezai, Mohsen Salesi, Farhad Daryanoosh, Javad Nemati,
Volume 23, Issue 2 (5-2023)
Abstract
Background: Diabetes leads to numerous side effects in the cardiovascular system and also to improper functioning of the body's antioxidant system. The aim of this study is to investigate the effect of six weeks of high-intensity interval training with coenzyme Q10 supplementation on the values of Nrf2 and NQO1 in heart muscle of elderly diabetic rats.
Methods: In this experimental study, 48 elderly male rats (18 months old) were randomly divided into four groups of intense aerobic exercise with coenzyme Q10 supplementation, intense aerobic exercise group, coenzyme Q10 supplement intake group, and control group. Induction of diabetes was done by injecting a single dose of streptozotocin in the amount of 60 mg/kg intraperitoneally. The program of high intensity interval training was done for six weeks. Coenzyme Q10 supplement group received orally at a dose of 200 mg/kg. Western blot method was used to measure Nrf2 and NQO1 values. The data were analyzed by one-way analysis of variance and Tukey's post hoc test at a significance level of P <0.05.
Results: The results showed taking coenzyme Q10 supplement (P= 0.014), intense intermittent exercise (P= 0.001) and intense intermittent exercise with coenzyme Q10 supplement (P= 0.001) significantly increased Nrf2 values in the hearts of diabetic elderly rats. Also, the use of coenzyme Q10 supplement (P=0.0366), intense intermittent exercise (P= 0.014) and intense intermittent exercise along with coenzyme Q10 supplement use (P= 0.002) significantly increased the amount of NQO1 in the hearts of diabetic aged male rats.
Conclusion: Intermittent intense training along with supplement consumption improves heart function in elderly diabetic patients through increasing endogenous antioxidant enzymes.
Vida Hakimi, Hamid Mohebbi, Bahman Mirzaei,
Volume 24, Issue 4 (10-2024)
Abstract
Background: Adipose tissue fibrosis is involved in glucose metabolism disorder and insulin resistance in obesity, but the effect of exercise on the progression of adipose tissue fibrosis is still unknown.
This study aimed to investigate the effect of high intensity interval training (HIIT) simultaneously with high-fat diet on TGF-β1, MMP-9 and MMP-2 in the subcutaneous adipose tissue of male rats.
Methods: 24 male rats were randomly divided into 4 groups: normal diet (ND), high fat diet (HFD), Normal diet + high intensity interval training (ND+HIIT), high fat diet+ high intensity interval training (HFD+HIIT). The HIIT protocol includes 8 bouts of intense activity at 90% of maximum running capacity (MRC) for 2.5 minutes, with active rest periods at 50% of maximum running capacity for 2.5 minutes for 12 weeks (5 sessions per week). 48 hours after the last training session, blood was taken, and subcutaneous fat was removed. Western blot method was used evaluate the TGF-β1 and ELISA method was used to measure levels of MMP-9, MMP-2, insulin.
Results: Induction of obesity was associated with a significant increase in TGF-β1, MMP-9 and MMP-2 and insulin resistance (P˂ 0.0001). In contrast, high-intensity interval with high fat diet compared to the high fat diet group causes a significant decrease in the amount of TGF-β1, MMP-9, MMP-2, and insulin resistance (P˂ 0.0001).
Conclusion: In conclusion, our data indicate that High-intensity interval training may weaken the progression of adipose tissue fibrosis and have a preventive effect on the increase in glucose metabolism disorders caused by a high-fat diet.
Somayeh Madanipour, Abbas Sadeghi, Hasan Purrazi,
Volume 24, Issue 4 (10-2024)
Abstract
Background: Adipogenesis is a dynamic process that leads to the phenotype of mature fat cells and plays a significant role in obesity and diabetes. The present study investigates the effect of Eight –Weeks of High-Intensity Interval Training (HIIT) and L -carnitine Consumption on the expression of BMP7 protein in visceral adipose tissue in diabetic rats.
Methods: In an experimental clinical-intervention study, 50 male Wistar rats were divided into 5 equal groups of control (C), diabetic (D), supplemental diabetic (D + LC), diabetic with exercise (D + T), supplement and exercise (D + LC + T). The training program consisted of eight weeks, 5 sessions per week (6 to 12 2-minute sessions with an intensity of 85-90% of the maximum speed). The subjects received 30 mg/kg body weight L-carnitine through drinking water. Visceral fat was extracted and the expression level of BMP7 protein was assessed using Western Blotting. Data analysis was performed by one-way ANOVA and Tukey post hoc test at a significant level of (P< 0.05).
Results: The results showed that the expression of BMP7, the adipogenesis stimulating protein, in (D + T) and (D + LC + T) groups increased significantly (P< 0.001).
Conclusion: According to the results, it seems that HIIT exercise alone and with L-carnitine Consumption is more effective in the expression of protein associated with adipogenesis expression in visceral fat. However, a clear statement requires further research in this area.
