scholarly journals The effect of 8 weeks endurance exercise on the content of total and phosphorylated AKT1, mTOR, P70S6K1 and 4E-BP1 in skeletal muscle FHL of rats with type 2 diabetes

2019 ◽  
Author(s):  
Saeedeh Shadmehri ◽  
Mohammad Sherafati Moghadam ◽  
Farhad Daryanoosh ◽  
Shiva Jahani Golbar ◽  
Nader Tanideh
Keyword(s):  
Type 2 Diabetes ◽  
Skeletal Muscle ◽  
Protein Synthesis ◽  
Training Program ◽  
Endurance Training ◽  
Endurance Exercise ◽  
Training Group ◽  
Control Group ◽  
Total P

Introduction: The mTOR pathway in skeletal muscle plays a very important role in the protein synthesis process, which plays a very important role in proteins. The role of endurance exercise has not yet been studied in this important pathway in protein synthesis in people with type 2 diabetes. The purpose of the present study was to investigate the effect of 8 weeks endurance training on the content of total and phosphorylated AKT1, mTOR, P70S6K1 and 4E-BP1 in skeletal muscle FHL of rats with type 2 diabetes. Methods: In this experimental study, 16 Sprague-Dawely male rats with average weight of 270±20 were selected and randomly divided into two groups: control (n=8) and endurance training (n=8). The training group exercised according to the training program 4 days a week for 8 weeks. While the control group had no training program. T-test and SPSS V-19 were used to analyze the data. Results: There was not observed any significant difference in the content of total (P=0.58) and phosphorylated (P=0.33) AKT1, total (P=0.47) and phosphorylated (P=0.78) mTOR, total (P=0.24) and phosphorylated (P=0.12) P70S6K1 and total (P=0.45) and phosphorylated (P=0.48) 4E-BP1 proteins in the endurance training group compared to the control group. Conclusion: Endurance training for 8 weeks could not increase the total and phosphorylated content proteins of the present study; therefore, it cannot lead to protein synthesis or muscle hypertrophy through mTORC1 pathway.

scholarly journals Intermuscular Fat Content in Young Chinese Men With Newly Diagnosed Type 2 Diabetes: Based on MR mDIXON-Quant Quantitative Technique

2021 ◽  
Vol 12 ◽  
Author(s):  
Fuyao Yu ◽  
Bing He ◽  
Li Chen ◽  
Fengzhe Wang ◽  
Haidong Zhu ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Skeletal Muscle ◽  
Fat Content ◽  
Control Group ◽  
Diabetic Patients ◽  
Diabetes Group ◽  
Control Subjects ◽  
Intermuscular Fat ◽  
And Control

ObjectiveSkeletal muscle fat content is one of the important contributors to insulin resistance (IR), but its diagnostic value remains unknown, especially in the Chinese population. Therefore, we aimed to analyze differences in skeletal muscle fat content and various functional MRI parameters between diabetic patients and control subjects to evaluate the early indicators of diabetes. In addition, we aimed to investigate the associations among skeletal muscle fat content, magnetic resonance parameters of skeletal muscle function and IR in type 2 diabetic patients and control subjects.MethodsWe enrolled 12 patients (age:29-38 years, BMI: 25-28 kg/m2) who were newly diagnosed with type 2 diabetes (intravenous plasma glucose concentration≥11.1mmol/l or fasting blood glucose concentration≥7.0mmol/l) together with 12 control subjects as the control group (age: 26-33 years, BMI: 21-28 kg/m2). Fasting blood samples were collected for the measurement of glucose, insulin, 2-hour postprandial blood glucose (PBG2h), and glycated hemoglobin (HbAlc). The magnetic resonance scan of the lower extremity and abdomen was performed, which can evaluate visceral fat content as well as skeletal muscle metabolism and function through transverse relaxation times (T2), fraction anisotropy (FA) and apparent diffusion coefficient (ADC) values.ResultsWe found a significant difference in intermuscular fat (IMAT) between the diabetes group and the control group (p<0.05), the ratio of IMAT in thigh muscles of diabetes group was higher than that of control group. In the entire cohort, IMAT was positively correlated with HOMA-IR, HbAlc, T2, and FA, and the T2 value was correlated with HOMA-IR, PBG2h and HbAlc (p<0.05). There were also significant differences in T2 and FA values between the diabetes group and the control group (p<0.05). According to the ROC, assuming 8.85% of IMAT as the cutoff value, the sensitivity and specificity of IMAT were 100% and 83.3%, respectively. Assuming 39.25ms as the cutoff value, the sensitivity and specificity of T2 value were 66.7% and 91.7%, respectively. All the statistical analyses were adjusted for age, BMI and visceral fat content.ConclusionDeposition of IMAT in skeletal muscles seems to be an important determinant for IR in type 2 diabetes. The skeletal muscle IMAT value greater than 8.85% and the T2 value greater than 39.25ms are suggestive of IR.

scholarly journals Aquatic Exercise Is Effective in Improving Exercise Performance in Patients with Heart Failure and Type 2 Diabetes Mellitus

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Cider Åsa ◽  
Schaufelberger Maria ◽  
Stibrant Sunnerhagen Katharina ◽  
Andersson Bert
Keyword(s):  
Diabetes Mellitus ◽  
Heart Failure ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Muscle Function ◽  
Training Group ◽  
Aquatic Exercise ◽  
Control Group ◽  
Walking Capacity

Background. Peak oxygen uptake (VO2peak) and muscle function are more decreased in patients with a combination of chronic heart failure (CHF) and type 2 diabetes mellitus (2DM) compared to patients with only one of the conditions. Further, patients with 2DM have peripheral complications that hamper many types of conventional exercises.Aim. To evaluate the efficacy and applicability of eight-week aquatic exercise in patients with the combination of CHF and 2DM.Methods. Twenty patients (four women) with both CHF and 2DM (age67.4±7.1, NYHA II-III) were randomly assigned to either aquatic exercise or a control group. The patients exercised for 45 minutes 3 times/week in 33–34°C, swimming pool.Results. The training programme was well tolerated. Work rate (+11.7±6.6versus−6.4±8.1 watt,P<0.001) andVO2peak(+2.1±0.8versus−0.9±1.4mL⋅kg−1⋅min−1,P<0.001) and walking capacity (P=0.01) increased significantly in the training group. Muscle function was also significantly improved and Hba1c decreased significantly (P<0.01) during training, while fasting glucose, insulin, c-peptide, and lipids were unchanged . Training also increased vitality measured by SF-36 significantly (P=0.05).Conclusion. Aquatic exercise could be used to improve exercise capacity and muscle function in patients with the combination of CHF and 2DM.

scholarly journals Effect of 8-Week Endurance Training on the Content of Mtor and SREBP1 Proteins in Subcutaneous Fat Tissue in Obese Type 2 Diabetic Male Sprague-Dawley Rats

2020 ◽  
Author(s):  
Masoud Jokar ◽  
Fatemeh Zarei ◽  
Mohammad Sherafati Moghadam ◽  
Hamed Alizadeh Palavani
Keyword(s):  
Endurance Training ◽  
Subcutaneous Fat ◽  
Training Group ◽  
Control Group ◽  
Fat Tissue ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Subcutaneous Fat Tissue ◽  
Type 2 Diabetic

Introduction: The mTOR and SREBP1 proteins play an important role important in the regulation and metabolism of adipose tissue that can be activated through the mTORC1 pathway. The purpose of the present study was to investigate the effect of 8 weeks endurance training on the content of mTOR and SREBP1 proteins in subcutaneous fat tissue in obese type 2 diabetic male Sprague-Dawley rats. Methods: In this experimental study, 16 three-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 (n=8) and diabetic control (n=8). The training group trained for 4 days a week in accordance with the training program for 8 weeks, while the control group did not have any training program. The independent t-test in SPSS software ver. 19 was used to analyze the data. Results: There was a significant increase in the content of mTOR (p<0.0001) and SREBP1 (p<0.0001) proteins in the training group compared to control; The control group weight increased (p<0.003) and training group (p<0.002) significantly decreased at the end of the eighth week compared to the first week. The blood glucose increased in the control group (p<0.001) and decreased in the exercise group (p<0.0001) in the eighth week compared to the first week. Conclusion: Endurance training can adjust the weight, blood glucose and proteins content of mTOR and SREBP1; Therefore, endurance training can be an important factor in controlling and regulating fat tissue metabolism; this type of training can be effective for obese subjects with type 2 diabetes.

Endurance training alters YKL40, PERM1, and HSP70 skeletal muscle protein contents in men with type 2 diabetes mellitus

2018 ◽  
Vol 44 (1-2) ◽  
pp. 1-8 ◽  
Author(s):  
Christian Brinkmann ◽  
Anika Kuckertz ◽  
Thorsten Schiffer ◽  
Wilhelm Bloch ◽  
Hans-Georg Predel ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Skeletal Muscle ◽  
Type 2 Diabetes Mellitus ◽  
Endurance Training ◽  
Muscle Protein ◽  
Skeletal Muscle Protein

Effects of Physical Training on Metabolic Control in Elderly Type 2 Diabetes Mellitus Patients

1997 ◽  
Vol 93 (2) ◽  
pp. 127-135 ◽  
Author(s):  
P.C. Ligtenberg ◽  
J.B.L. Hoekstra ◽  
E. Bol ◽  
M.L. Zonderland ◽  
D.W. Erkelens
Keyword(s):  
Physical Activity ◽  
Type 2 Diabetes ◽  
Insulin Sensitivity ◽  
Physical Training ◽  
Training Group ◽  
Control Group ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
Type 2 Diabetic

1. The specific role of physical activity in the treatment of type 2 diabetes is still subject to discussion. A randomized prospective study was performed, investigating both the influence of physical training on metabolic control and the feasibility of physical training in the elderly. 2. A total of 58 patients (mean age: 62 ± 5 years; range: 55–75 years) with type 2 diabetes were randomized to either a physical training or a control programme. The training programme consisted of three sessions a week, aiming at 60–80% of the maximal oxygen uptake (VO2max). The 12 week supervised period was followed by a 14 week non-supervised one. The control group followed an educational programme. VO2max was assessed during exercise on a cycle ergometer. Glycosylated haemoglobin (HbA1c) was used as a measure for glucose control, and an insulin tolerance test was performed to test insulin sensitivity. Multivariate analysis of variance, with repeated measures design, was used to test differences between groups. 3. Fifty-one patients completed the study. VO2max was higher in the training group than in the control group both after 6 weeks (P ≤ 0.01 between groups) and after 26 weeks [training group: 1796 ± 419 ml/min (prestudy), 1880 ± 458 ml/min (6 weeks), 1786 ± 591 ml/min (26 weeks); control group: 1859 ± 455 ml/min (prestudy), 1742 ± 467 ml/min (6 weeks), 1629 ± 504 ml/min (26 weeks)]. Blood glucose control and insulin sensitivity did not change during the study. Levels of total triacyl-glycerols, very-low-density lipoprotein-triacyl-glycerols and apolipoprotein B were significantly lower after 6 weeks (P ≤ 0.01, P ≤ 0.05, P ≤ 0.05 between groups respectively), and so was the level of total cholesterol after 12 weeks of training (P ≤ 0.05 between groups). 4. Physical training in obese type 2 diabetic patients over 55 years of age does not change glycaemic control or insulin sensitivity in the short-term. Regular physical activity may lower triacylglycerol and cholesterol levels in this group of patients. 5. Finally, physical training in motivated elderly type 2 diabetic patients without major cardiovascular or musculoskeletal disorders is feasible, but only under supervision.

scholarly journals Postprandial Protein Handling Is Not Impaired in Type 2 Diabetes Patients When Compared With Normoglycemic Controls

2015 ◽  
Vol 100 (8) ◽  
pp. 3103-3111 ◽  
Author(s):  
Imre W. K. Kouw ◽  
Stefan H. M. Gorissen ◽  
Nicholas A. Burd ◽  
Naomi M. Cermak ◽  
Annemarie P. Gijsen ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Protein Synthesis ◽  
Muscle Protein ◽  
Muscle Protein Synthesis ◽  
Control Group ◽  
Older Individuals ◽  
Diabetes Group ◽  
Protein Ingestion ◽  
Diabetes Patients

Context: The progressive loss of muscle mass with aging is accelerated in type 2 diabetes patients. It has been suggested that this is attributed to a blunted muscle protein synthetic response to food intake. Objective: The objective of the study was to test the hypothesis that the muscle protein synthetic response to protein ingestion is impaired in older type 2 diabetes patients when compared with healthy, normoglycemic controls. Design: A clinical intervention study with two parallel groups was conducted between August 2011 and July 2012. Setting: The study was conducted at the research unit of Maastricht University, The Netherlands. Intervention, Participants, and Main Outcome Measures: Eleven older type 2 diabetes males [diabetes; age 71 ± 1 y, body mass index (BMI) 26.2 ± 0.5 kg/m2] and 12 age- and BMI-matched normoglycemic controls (control; age 74 ± 1 y, BMI 24.8 ± 1.1 kg/m2) participated in an experiment in which they ingested 20 g intrinsically L-[1-13C]phenylalanine-labeled protein. Continuous iv L-[ring-2H5]phenylalanine infusion was applied, and blood and muscle samples were obtained to assess amino acid kinetics and muscle protein synthesis rates in the postabsorptive and postprandial state. Results: Plasma insulin concentrations increased after protein ingestion in both groups, with a greater rise in the diabetes group. Postabsorptive and postprandial muscle protein synthesis rates did not differ between groups and averaged 0.029 ± 0.003 vs 0.029 ± 0.003%/h1 and 0.031 ± 0.002 vs 0.033 ± 0.002%/h1 in the diabetes versus control group, respectively. Postprandial L-[1-13C]phenylalanine incorporation into muscle protein did not differ between groups (0.018 ± 0.001 vs 0.019 ± 0.002 mole percent excess, respectively). Conclusions: Postabsorptive muscle protein synthesis and postprandial protein handling is not impaired in older individuals with type 2 diabetes when compared with age-matched, normoglycemic controls.

scholarly journals Endurance training remodels skeletal muscle phospholipid composition and increases intrinsic mitochondrial respiration in men with Type 2 diabetes

2019 ◽  
Vol 51 (11) ◽  
pp. 586-595 ◽  
Author(s):  
Maria F. Pino ◽  
Natalie A. Stephens ◽  
Alexey M. Eroshkin ◽  
Fanchao Yi ◽  
Andrew Hodges ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Skeletal Muscle ◽  
Insulin Sensitivity ◽  
Endurance Training ◽  
Mitochondrial Function ◽  
Mitochondrial Respiration ◽  
Phospholipid Composition ◽  
Rna Seq ◽  
Mitochondrial Dna Copy Number

The effects of exercise training on the skeletal muscle (SKM) lipidome and mitochondrial function have not been thoroughly explored in individuals with Type 2 diabetes (T2D). We hypothesize that 10 wk of supervised endurance training improves SKM mitochondrial function and insulin sensitivity that are related to alterations in lipid signatures within SKM of T2D (males n = 8). We employed integrated multi-omics data analyses including ex vivo lipidomics (MS/MS-shotgun) and transcriptomics (RNA-Seq). From biopsies of SKM, tissue and primary myotubes mitochondrial respiration were quantified by high-resolution respirometry. We also performed hyperinsulinemic-euglycemic clamps and blood draws before and after the training. The lipidomics analysis revealed that endurance training (>95% compliance) increased monolysocardiolipin by 68.2% ( P ≤ 0.03), a putative marker of mitochondrial remodeling, and reduced total sphingomyelin by 44.8% ( P ≤ 0.05) and phosphatidylserine by 39.7% ( P ≤ 0.04) and tended to reduce ceramide lipid content by 19.8%. Endurance training also improved intrinsic mitochondrial respiration in SKM of T2D without alterations in mitochondrial DNA copy number or cardiolipin content. RNA-Seq revealed 71 transcripts in SKM of T2D that were differentially regulated. Insulin sensitivity was unaffected, and HbA1c levels moderately increased by 7.3% despite an improvement in cardiorespiratory fitness (V̇o2peak) following the training intervention. In summary, endurance training improves intrinsic and cell-autonomous SKM mitochondrial function and modifies lipid composition in men with T2D independently of alterations in insulin sensitivity and glycemic control.

scholarly journals The effects of twelve weeks of combined exercises on GLP-1 and insulin resistance in women with type 2 diabetes

2019 ◽  
Author(s):  
Reihaneh Nejati ◽  
Seyyed Reza Attarzadeh Hosseini ◽  
Nahid Bijeh ◽  
Aliakbar Raouf Saeb
Keyword(s):  
Insulin Resistance ◽  
Type 2 Diabetes ◽  
Training Group ◽  
Exercise Session ◽  
Control Group ◽  
Exercise Protocol ◽  
Significance Level ◽  
Leg Extension ◽  
Significant Difference

Introdution: The purpose of this study was to investigate the effect of twelve weeks of combined exercise with two patterns (aerobic-resistance and resistance-aerobic) on GLP-1 and insulin resistance in women with type 2 diabetes. Methods: In this practical and semi-experimental study, 42 women with type 2 diabetes were divided into three groups: aerobic-resistance group (n=15), resistance-aerobic group (n=15) and control group (n=15). Then, they were practiced three sessions a week for 12 weeks. The exercise protocol for both groups was the same and the only difference was in the sequence of exercises. The aerobic exercise protocol was 10×1 minutes active with one minute active rest between the sets with using a treadmill. Resistance exercises included movements such as leg press, bench press, seated leg extension, lat pulldown, and lying leg curl, seated shoulder press, which included the main muscles of the lower trunk and upper trunk and was done by the machine. Blood samples were prepared in the pre-test and 48 hours after the last exercise session in the post-test. The data were analyzed through SPSS version.16 (Inc., Chicago, IL); the results of analysis of variance and dependent t-Student were analyzed at the significance level (P<0.05). Results: The values of GLP-1 increased and insulin resistance significantly decreased in the training groups compared to the control group (P≤0.05), however, there was no statistically significant difference between the aerobic-resistance and resistance-aerobic training group (P>0.05). Conclusion The results of this research show that combined exercises with increased levels of GLP-1 play an important role in the improving the status of insulin resistance in women with type 2 diabetes. However, more research is needed about different patterns of combined exercises.

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