Showing 78 results for Insulin
Sayede Sahere Ghoreishi, Sajad Ahmadizad, Dariush Sheikhol-Eslami Vatani, Farhad Azari,
Volume 15, Issue 4 (5-2016)
Abstract
Background: The purpose of this study was the investigation effect of gender on plasma glucose, insulin and insulin resistance index in response to acute endurance activity and subsequent recovery periods in healthy individuals.
Methods: Eight females and seven males 20-30 years old (females 22.37±1.50 and men 23.42±1.27 years old, female weight 55.50±8.14 men and 79.85±15.16 kg, women height 160.12 ± 4.18 men and 179.71±6.57 cm) voluntarily participated in this study. Subjects performed two control activities during two consecutive weeks. The implementation of the sessions was randomly determined for each subject. Exercise program consisted of 45 min acute endurance at 75% of maximum heart rate on the treadmill and subsequently the subject was in a sitting position for one clock recovery. Four blood samples (6 ml) before and immediately after exercise, as well as 1 and 24 hours after the activity was collected. Two-way analysis of variance for data analysis was used.
Results: Regardless of gender, effects of activity and recovery on plasma insulin and insulin resistance index was significant (p <0.05) but not significant for glucose. Also when the data were corrected by changes in plasma volume, similar results were observed for insulin. Although changes of all factors (glucose, insulin, and insulin resistance) in response to activity session of acute exercise endurance was higher in men than in woman, gender has not significant effect on factors.
Conclusion: acute endurance activity and recovery induce change in insulin resistance index but these changes were not related to gender.
Leila Zamanpour, Ebrahim Banitalebi, Seyed Ehsan Amirhosseini,
Volume 15, Issue 5 (7-2016)
Abstract
Background: The purpose of this study is to the comparison of the effect of 12 weeks of sprint training and concurrent aerobic and strength training on high sensitive C-reactive protein (hs-CRP), interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α) and insulin resistance in women with diabetes mellitus (T2DM)
Methods: 52 overweight female type 2 diabetic patients (age; 45-60 years old and fasting blood glucose ≥ 126 mg/dl (7.0 mmol/l)) were assessed for eligibility. Participants were assigned to intense interval training group (N=17), concurrent resistance- endurance training group (N=17) and control group (N=18). The combined strength-endurance group did 12 weeks, three sessions per week endurance training with 60 % of maximal heart rate and two session resistance training with 70 % 1-RM. Intense interval training group did three session/week of 4-10 repetition of all out 30s Wingate on ergometer were included 10 weeks of concurrent resistance- endurance training and intense interval training.
Results: The results showed that following sprint training, there were significant changes in hs-CRP (p<0.001), but it wasn’t significant following concurrent training (p=0.062). According to results, TNF-α change were not significant in intense sprint (p=0.11) and concurrent training (p=0.23). Differences were not significant for the fasting blood glucose in the intense interval training groups (p=0.000). Serum insulin levels showed significant increases in the SIT (p<0.000) and concurrent training (p=0.000) significantly. The data showed significant differences in insulin resistance index (HOMA-IR) in intense interval training (p=0.000) and concurrent resistance- endurance training (p=0.008). ANCOVA test showed no significant difference in fasting blood glucose concentrations (P=0.171).
Conclusion: Intense sprint training compare to concurrent strength-endurance training can have better inflammatory status for patients with type 2diabete.
Rahman Soori, Nikoo Khosravi, Shaghayegh Jafarpour, Azam Ramezankhani,
Volume 16, Issue 2 (1-2017)
Abstract
Background: Inflammation plays an essential role in the insulin resistance process, and chemokines, such as chemerin, seem to play a pivotal role in the pathogenesis of insulin resistance. The aim of this study was to compare the effects of aerobic exercise and caloric restriction on chemerin levels and insulin resistance index in women with type 2 diabetes.
Methods: In a quasi-experimental study, 30 type 2 diabetes women were recruited (Mean age: 49.3±5.4 yr; weight: 78.8±7.3kg). Subjects randomly were divided into three groups: caloric restriction (experimental group 1 or CR), aerobic exercise with caloric restriction (experimental group 2 or EX+CR) and control group. In CR group, subjects follow a diet with 25% caloric restriction for 12 weeks. Subjects in CR+EX group used a training program including aerobic exercise and running on treadmill and diet with 50% caloric restriction of CR group (12.5% caloric restriction+12.5% increase in energy expenditure). Before and after 12 weeks, blood sampling for measurement of chemerin, IL-6, glucose and insulin was carried out. Data were analyzed by paired sample t-test and one way ANOVA at significant level of p<0.05.
Results: Results showed that body mass index (BMI), waist to hip ratio (WHR), insulin resistance index (HOMA-IR) and interleukin6 decreased significantly in experimental groups. chemerin levels were increased significantly in CR (P=0.001) and EX+CR groups (P=0.001). Significant correlation were seen between changes of chemerin with changes of BMI, WHR, HOMA-IR and interleukin6 (P<0.05).
Conclusion: According to the relationship between chemerin and insulin resistance and also, its effectiveness of aerobic exercise and caloric restriction, decreased levels of chemerin may play a special role in reduction of insulin resistance.
Hamid Naraghipoor Arani, Heidar Ali Abedi, Ahmad Bahonar,
Volume 16, Issue 6 (10-2017)
Abstract
Background: Diabetes is a common disease and one of the biggest health problems in the country. These patients, in addition to physical problems, also suffered from mental problems which the disorder of body image is one of the most prominent problems. This study compared mental image of patients with type 2 diabetes treated with oral medication and those with insulin.
Methods: This study was conducted in a descriptive-analytic way in 1394. The study population included patients with type II diabetes are treated in diabetes center of Aran and Bidgol in 1394. A sample of 168 people was randomly chosen. Needed data was collected by demographic and multi-dimensional questionnaire using a person's attitude about their body image (MBSRQ) Dry reliable 0.73 and were analyzed with SPSS 22 software by using independent t tests, chi-square and Mann-Whitney and Fisher
Results: Base on the duration of disease, the most common was among patients with oral treatment (82.1 percent) and treated with insulin (58.3 per cent) of less than 10 years. Average rating of orientation to fit oral treatment was for patients with 41.79 and 40.15 for insulin therapy, in health assessment section for patients with 17.58 oral treatment and 16.71 for insulin. State of disease trends was in 63/1 percent of patients with moderate oral treatment and 46.4 percent with severe insulin treatment. Independent t test results showed a significant difference between the scores of two patients in the above sections (P<0.05) but significant differences in other aspects of mental image between the two groups was observed.
Conclusion: Generally, average mental image in patients treated with oral medication was not more than patients treated with insulin. Because one of the negative effects of diabetes on patients is psychiatric disorder, therefore, to improve the mental state of these patients and improve health and to control disease in these patients, research findings is expected to be the use.
Nasim Azari, Masoud Rahmati, Mohammad Fathi,
Volume 17, Issue 2 (3-2018)
Abstract
Background: There are many research have been done so far about the effect of exercise training on diabetic type 2 related risk factors. But in this regard there is no study performed in Iran. So, the aim of the present study was to investigate the effect of endurance exercise training on some diabetic type 2 dependent variables in the form of systematic review and meta-analysis of studies that were performed in Iran.
Methods: In this research PubMed, Embase, Cochran, Scopus, ISI, Google Scholar, Science direct, Sid and Magiran databases were searched for Persian sources. Data analysis were done using STATA software version 12.0.
Results: Generally, 242 articles were founded in primary search, which 24 articles were included in this research. Finally research were evaluated 592 Iranian's peoples which 294 peoples as a control group (96 male and 198 women) and 298 peoples as a training group (97 male and 201 women).The results indicate that there were significant association between endurance exercise and blood glucose levels (P=0.0001,-1.016,-0.656;95%CI), insulin (P=0.0001,-1.042,-0.682;95%CI), insulin resistance (P=0.0001;-0.563,-0.217;95%CI).
Conclusion: Generally, this systematic review and meta-analysis study was demonstrated endurance exercise could be related with decrease diabetes type 2 related risk factors. So, it is recommended that sport and medicine experts use endurance exercise as a non- pharmacological intervention for treatment of diabetes type 2 patients.
Mohsen Omidi, Mehrzad Moghadasi,
Volume 17, Issue 2 (3-2018)
Abstract
Abstract: Pancreatic β-cells function and insulin sensitivity resistance were impaired in type 2 diabetes. Exercise training may improves these impairs, however, this is not well known. The aim of present study was to examine the Effect of 8 weeks aerobic training on pancreatic β-cells function and insulin resistance in female patients with type 2 diabetes.
Methods: Twenty middle-aged women (age, 40 -50 years) with type 2 diabetes participated as the subject. The subjects were randomly assign to control group (n=10) or the training group (n=10). The subjects in the training group performed 30 to 45 min aerobic training on the treadmill with 60- 75% of their maximum heart rate, 3 days a week for 8 weeks. The subjects in the control group were instructed to maintain their normal physical activity throughout the study.
Results: The results indicated that fasting blood sugar, fasting insulin and insulin resistance index decrease in the training group compare to the control group (P<0.05); however, pancreatic β-cells function has no significant change after the intervention (P=0.2).
Conclusion: In summary, it seems that aerobic training utilized in this study improves glucose entry into cells but it had not effective on pancreatic β-cells function.
Elham Ebrahimi, Bahman Sadegi Sedeh, Mohammad Reza Rezvanfar,
Volume 17, Issue 3 (3-2018)
Abstract
Background: Insulin is first choice for gestational diabetes control, but its needed to frequent injections; one thing that is difficult for pregnant women, so interest to metformin consumption is increased. Metformin easily crosses the placenta and its fetal blood levels is equivalent to the level of the mother's blood. Metformin also easily cross the brain barrier and enter the brain. Possible side effects of metformin compared to insulin on fetus brain development was concerned to design of present study.
Methods: In this cross-sectional prospective trial, gestational diabetes women were recruited randomly to insulin (64 patients) and metformin (64 patients) groups and compared for pregnancy and neonatal outcome and also six-month-old infancy developmental indexes. The results considered significant if P value was ≤ 0.05.
Results: Six-month body mass index of insulin group women was significantly more than metformin group(P=0.05), but there was not any significant difference in cesarean section, preterm labor, dystocia, preeclampsia and still birth rate between two groups. Also neonatal characteristics, need to admission and six-month-old infancy developmental indexes according to Ages stages questionnaire were no different between two groups.
Conclusion: Metformin consumption in compare to insulin was not associated with maternal, neonatal and six-month-old infancy developmental indexes side effects.
Mahdi Ghafari, Mohamad Faramarzi, Ebrahim Banitalebi,
Volume 17, Issue 4 (5-2018)
Abstract
Background: Lipid metabolism disorder in muscle plays an important role in creating insulin resistance in skeletal muscle. Perilipin 3 (PLIN3) is one of PLIN proteins in regulation of muscle lipolysis. The purpose of this study was compared two different endurance training intensities on perilipin 3 protein expression in skeletal muscle, serum insulin levels and glucose in streptozotocin-induced diabetic rats.
Method: 24 male Wistar rats were randomly divided into three groups. Low and high and high-intensity and control group. Endurance training was applied three times a week for eight weeks. The low-intensity exercise group was trained to the treadmill by running at a speed of 60 percent of vo2max and high-intensity training 85%Vo2max. The expression of the plin2 protein was analyzed by Western blot technique. To determine the significance of differences between the groups, the results were analyzed using one-way ANOVA and Tukey post-hoc test (α= 0.05).
Results: Direct comparison between the groups by ANOVA showed significant differences in perilipin 3 (p=0.0006). Tukey's post hoc test showed that there was a statistical difference between the mean values of the diabetic control group and high-intensity endurance group (P = 0.01). Perilipin 3 not significantly increased in low-intensity exercise compared to the control group (P=0. 67). Also, the comparison between groups showed, there was significant difference between the three groups. The serum levels of glucose and insulin (respectively p=0.001 and p=.001).
Conclusion: The results of the present study showed that the Effects of with high-intensity endurance training increase the expression perilipin 3 in diabetes rats.
Negin Chehrazi, Minoo Bassami, Sajad Ahmadizad,
Volume 17, Issue 5 (7-2018)
Abstract
Background: Prevalence of obesity and overweight in women increases the possibility of metabolic syndrome and diabetes. Based on the variety of the effects of different type of exercise and the differences in the upper and lower body muscle volume involved in the exercise, the effects of high intensity interval exercise with arm and leg ergometer on metabolism and insulin resistance might be different. The aim of this study was to compare the effect of upper and lower body interval exercise on carbohydrate metabolism and insulin resistance in obese women.
Methods: Twelve obese and overweight women (body mass index, 31.1±5.5 kg/m2) performed two interval exercise trials of 30-min on arm and leg ergometer with one week intervening. Interval exercise included 5 sets of 6 min in which 2- min activity at 85% VO2max and 4 min active rest at 45% VO2max was performed. Two blood samples were taken before and immediately after exercise for measuring glucose and insulin. VO2 and VCO2m were collected during exercise and used to calculate the amount of carbohydrate oxidation.
Result: Although interval exercise reduced the insulin concentration, responses of insulin to upper and lower body exercises were not significantly different (P>0.05). Glucose level reduced following interval exercise, and this reduction was significantly (P<0.05) higher following lower body interval exercise than upper body exercise. Similarly the reductions in HOMA-IR were significantly (P<0.05) higher following lower body interval exercise than upper body exercise. Interval exercise resulted in increases in oxidation of carbohydrate, though; responses to upper and lower exercises were not significantly different.
Conclusion: It could be concluded that interval exercise in obese women leads to changes in carbohydrate metabolism and insulin resistance, and that the changes in insulin resistance are related to type of exercise (upper and lower body), though carbohydrate oxidation is not.
Tahereh Dehdari, Laleh Dehdari, Shima Jazayeri,
Volume 17, Issue 5 (7-2018)
Abstract
Background: Given the recognizing the determinants of medication adherence in diabetic patients is necessary to design appropriate interventions, the aim of this study was to clarification experiences of parsons with type II diabetes in terms of insulin use.
Methods: This qualitative study was conducted on 22 patients with type II diabetes who were referred to Glands Clinic of Firozgar Hospital, Iran University of Medical Sciences, Tehran, Iran in 2017 which were purposefully selected and interviewed. All interviews were recorded, transcribed and then analyzed.
Results: The mean age of participants was 56.72 (SD=9.16) yr old. After analyzing and coding of data, individual factors with 6 categories (included negative attitude regarding Insulin, emotional factors, knowledge, fear, belief about the more effectiveness of complementary therapies than insulin injection and inadequate skill for storage and inject insulin) and environmental factors with 3 categories (included cost, situational influences and social support) was identified as experiences participants, in terms of insulin use.
Conclusion: Establishment of counseling and training centers for patients with diabetes and their families in endocrinology clinics, increase the support of insurance from diabetic patients, and the need for more time to training patients by doctors is essential.
Bahareh Heidari Sharif Abadi, Farzaneh Taghian,
Volume 17, Issue 6 (10-2018)
Abstract
Background: The purpose of this study was to determine the effect of 10 weeks of Intensity Interval Training and Supplementation green tea on serum level of irisin and insulin resistance in obese women with type 2 diabetes
Methods: In this semi-experimental study,48 women with type II diabetes (aged 49/55±3/04 years with Weight 76/72±5/78 kg, Height 153/33±5/06 Cm, BMI 31/75±1/41 Kg/m2, selected and grouped randomly into four groups the intensity interval training (n=12), combined (green tea extract along with intensity interval training) (n=12) green tea extract (n=12), and the control group(n=12). Training group performed training programs including 3sessions per week at maximum intensity of 75-85% heart rate and the supplement group consumed 3 tablets of green tea (500 mg) daily for 10 weeks high intensity interval training and the supplement group both underwent intervention. Blood samples were collected before and after the intervention in fasting state. The obtained data was analyzed using of variance (ANOVA) and Tukey post hoc test and paired t-test analysis. The significant level was P<0/05.
Results: The results showed that irisin levels and maximum oxygen consumption in all three groups increased significantly after 10 weeks compared to the control group (P≤0.05) Also, the results indicate a significant increase in irezin in the combined group compared with the green tea group. Serum insulin level, glucose, insulin resistance and weight, body mass index decreased significantly in all three groups compared to control group and green tea group and combination group (P≤0.05).No significant difference was found between the groups in the irisin levels)P>0.05).
Conclusion: Regarding the results of this study, it seems that performing periodic exercises along with supplementation of green tea due to increased irisin and glucose reduction can be helpful in improving insulin resistance in patients with type 2 diabetes. Perhaps the desired results can be achieved by increasing the duration of exercise and supplementation with iyrosin and the maximum oxygen intake.
Khalid Mohamadzadeh Salamat,
Volume 17, Issue 6 (10-2018)
Abstract
Background: The relationship between adipokines, insulin resistance and type 2 diabetes has been well documented. However, the effect of exercise training modalities on some of the new adipokines and their association with insulin resistance is not clear. The purpose of this study was to compare the effect of endurance and progressive resistance training on serum adiponectin, vaspin and insulin resistance in overweight and obese men.
Methods: 33 overweight men (mean BMI= 27.3 kg/m2) were randomly divided into 3 groups of n=11, including; 1- continues training, 2- progressive resistance training and 3-control. The training protocols was lasted to eight weeks, three days a week in continues and progressive resistance training groups. Before the beginning of the training and 72 hours after the last training session, blood samples were collected for measuring serum adiponectin, vaspin, glucose and insulin.
Results: There was a significant decrease in insulin levels and a significant increase in serum adiponectin and vaspin in both groups of continuous and progressive resistance training (P<0.05). After the training, there was a significant difference between the groups in the concentration of adiponectin (P= 0.001) and vaspin (P= 0.021). However, there was no significant difference between continuous and progressive resistance training groups in any of the variables.
Conclusion: It seems that progressive resistance training like the endurance training, improves anti-inflammatory indices and insulin resistance of overweight and obese men.
Rahman Soori, Mahdi Angouti, Mohammad Reza Asad, Sadegh Sattarifard, Azam Ramezankhani,
Volume 17, Issue 6 (10-2018)
Abstract
Background: Zinc-Alpha 2-Glycoprotein (ZAG) has recently been implicated in the regulation of adipose tissue metabolism due to its negative association with obesity and insulin resistance. The purpose of this study is to investigate the effect of eight weeks HIIT on level of ZAG in plasma and adipose tissue in type 2 diabetic male rats.
Methods: Twenty one male rats were divided into the three groups of sham control (healthy), control (diabetic), and interval training (diabetic with training). The training group received 8 weeks of training sessions each with 5-12 repetitions of high intensity training for 15-30 seconds at the speed of 27-34 meters per second on a treadmill followed by one minute of active rest. Twenty four hours after the training session blood and body fat samples were taken to measure ZAG levels. The data was analyzed using one-way ANOVA and Tukey’s post hock test at the significance level of 0.05 (P<0.05).
Results: There were significant differences between the sham control and the control with respect to ZAG contents in adipose tissue, which was lower in the diabetic control group (P<0.001). Moreover, significant differences in ZAG contents of adipose tissue were also observed between the sham control and the group receiving the training, with the sham control having higher ZAG contents in adipose tissue (P<0.005). The eight-week HIIT significantly increased the amount of secreted ZAG in adipose tissue compared to the control diabetic group (P=0.003). No significant differences were recorded between the groups in ZAG plasma levels.
Conclusion: The HIIT increased ZAG content in the adipose tissue of the male diabetic rats. This can reduce insulin resistance in type 2 diabetes.
Shahin Riyahi Malayeri, Azam Azadniya, Mohammad Javad Rasaee,
Volume 18, Issue 1 (1-2019)
Abstract
Background: Adiponectin and resin; Adipocytokine relateted with insulin resistance. The purpose of this study was to the Effect of eight-week high intensity interval training and resveratrol intake on Serum Adiponectin and resistin in type 2 diabetic rats.
Methods: During this experiment 32 diabetic rats with High-Dieting Diet Sprague Dowley race with an average weight of 250 ±10 grams and an average age of 10 weeks, were randomly divided into four groups, including the “control group”, the “supplement group”, the “training group” and the “training and supplement group”. For up to 8 weeks, the “practice” groups participated in 5 training sessions weekly; session was 18 minutes under the influence of High-Intensity Interval training with an intensity of 90 to %100 VO2max. moreover, the supplement groups were given 10 milligram daily doses of resveratrol intake solution per kilogram of body weight Gavage was given for 8 weeks and three times a week. The outcome data was analyzed using one-way analysis of variance and significance level of (P≤0.05).
Results: The results showed that eight weeks of exercise and resveratrol consumption increased on serum adiponectin, but did not have a statistically significant effect (P = 0.62). However, serum resistin decreased and significantly affected the training group (P = 0.001). Also, the mean values of fasting glucose, insulin and insulin resistance index decreased significantly in experimental groups (P = 0.001).
Conclusion: It seems high intensity interval training with resveratrol intake can lead to glucose control in type II diabetes by changing its insulin resistance factors.
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.
Reza Omidi Ghanbari, Rahman Soori, Ahmad Hemmatfar,
Volume 18, Issue 5 (7-2019)
Abstract
Background: Adropin is a peptide hormone playing a role in energy homeostasis and prevention of obesity. The aim of this study was to investigate the effects of aerobic exercise with low intensity on serum adropin levels and insulin resistance index (HOMA-IR) in obese sedentary adolescent boys.
Methods: This study was carried out in a quasi-experimental design. 26 obese adolescent boys were recruited (Mean ± SD: 13.4±0.81 yr; weight: 85.44±8.51kg) and were randomly assigned into two groups: aerobic exercise and control group. The training group performed running with intensity of 50-65% of maximal heart rate, three times a week for 10 weeks. Before and after intervention, blood sampling for measurement of serum adropin, fasting insulin and glucose was carried out. Data were analyzed by paired t-test and independent t-test at significant levels of P≤0.05.
Results: Weight (P=0.001) and body fat percent (P=0.017) showed significant reduction in aerobic group in posttest compared to pretest and control group. Serum adropin levels were increased significantly in aerobic exercise group compared to pretest and control group (P=0.0001). Significant correlation was seen between changes of adropin with changes of weight, body fat percent and HOMA-IR (P≤0.05).
Conclusion: According to the relationship between adropin with body composition and insulin resistance and also, its influence from aerobic exercise, adropin may play a special role in weight and obesity management.
Niloofar Salavati, Farzaneh Taghian, Khosro Jalali,
Volume 19, Issue 1 (1-2020)
Abstract
Background: The purpose of this study was to compare the effect of eight weeks of resistance training with and without the use of aqueous extracts of barberry and saffron on serum levels of RBP4, glucose, insulin and insulin resistance in obese mice.
Methods: In this study, 80 mice with a mean weight of 41± 2 g were exposed to high fat diet for 10 weeks. Then, they were randomly assigned to 8 resistance training groups (10 n), resistance and saffron (10 n), saffron (10= n ), Resistance and barberry (n =10), barberry (n =10), saffron and barberry (10n =), resistance training with extract of saffron and barberry (10n =) and control group (n = 10). The resistance training program included raising the mice from the ladder with weight (three sets and 5 repetitions each) three times a week for 8 weeks. The consumption of saffron and barberry extracts was done at 0.08 for total weight of mice for 8 weeks. After 14 hours of fasting, the initial blood sample was taken at 5 ml of the left ventricle of the rats and RBP4, glucose, insulin and insulin resistance levels were measured. One-way analysis of variance was used to compare the data between groups. All calculations were considered at P≤0.05
Results: The results showed that there was a significant difference in the levels of RBP4 (P = 0.002), glucose (P = 0.03), insulin (P = 0.02), and insulin resistance (P= 0.004) There are different research groups.
Follow-up test results showed that RBP4 levels decreased in the resistance training group compared to the barberry and control groups. In saffron group, resistance to barberry and control group decreased. The saffron group also decreased compared to the saffron and barberry training groups.
Conclusion: The findings of this study emphasize the effect of resistance training, the use of saffron extract and barberry extract on reducing the metabolic effects of obesity by reducing RBP4 and reducing glucose, insulin and insulin resistance.
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.
Reza Sadeghi, Saeid Keshavarz, Mahdi Kargarfard, Jamshid Banaei,
Volume 20, Issue 3 (2-2021)
Abstract
Background: It has been shown that C1q TNF-related protein 5 (CTRP5) is a novel adipokine and important molecule related to metabolism regulation. This study aims to assess the effectiveness of different training protocols on improving serum levels of CTRP5, fasting blood glucose, insulin, Insulin resistance in patients with T2DM.
Methods: Sixty men with T2DM (mean age [X̅±SD]=51.45±4.26 years) were randomly assigned to combined exercise group (CEx: n = 15), aerobic exercise group (AEx: n = 15), resistance exercise group (REx: n = 15), or the control group (CON: n= 15). Exercise programs consisted of aerobic exercises at either AEx (50% - 75% of HRR) or REx (70% - 85% of 1-RM), of equal volume, 3 times per week, 45 to 60 minutes per session for 12 weeks. Serum levels of CTRP5, fasting blood glucose (FBG), insulin, Insulin resistance (IR) and body mass index (BMI) were measured at baseline and at the end of the study. The data were analyzed using repeated-measures analysis of variance.
Results: After 12 weeks intervention, FBG, insulin, HOMA-IR and BMI levels decreased significantly, whereas the serum CTRP5 levels increased in the CEx, AEx and Rex groups compared to control (P < .05).
Conclusion: It appears that the increased levels of CTRP5 following exercise interventions contribute to the decreased risk of T2DM.
