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Showing 16 results for Resistance Training

Moosavi Sj (phd), Habibian M (msc),
Volume 13, Issue 4 (12-2011)
Abstract

Background and Objective: Fibrinogen, an inflammatory marker as well as a fundamental part of the coagulation cascade, is suggested to play a significant role in the pathogenesis of atherosclerosis and complications of atherothrombotic diseases. This study was carried out to assess the comparison of acute aerobic and resistance training method on plasma fibrinogen concentration in young women. Materials and Methods: This semi-experimental study was done on twenty trained volunteer women students, which was selected objectively, and availability. The subjects were randomly divided into two groups of aerobic (n=10) and resistance training (n=10). Aerobic group performed exhaustive workout program on treadmill intensity 65 to75% of Vo2max on treadmill. The resistance group completed three sets of 5-7 repetitions of six exercises at an intensity corresponding to 80% of 1RM. Following 12 to 14 hours of nightly fasting, venous blood samples (5 cc) were collected pre, immediately after exercise and after 60 min of recovery and analyzed for fibrinogen content. Participants were matched according to anthropometric measurements, age, fat percentage and Vo2max. Data tested by using independent t, repeated measures analysis of variance and post-hoc test least significant difference (LSD) (P≤0.05). Results: In both the aerobic and resistance training groups, fibrinogen levels increased immediately after exercise and remained higher than baseline levels during recovery. This changes were significant only in aerobic group (P<0.05). Resistance training increased significantly the fibrinogen levels immediately after exercise than aerobic exercise (P<0.035). Conclusion: It can be concluded that the exhaustive aerobic exercise may induce slightly increase the fibrinogen levels in comparison with resistance training at intensity corresponding to 80% of 1RM.
Banitalebi E (phd), Ghatre Samani K (phd), Mardani G (msc), Soheili A (pharm.d), Ansari Samani R (msc), Teimori H (phd),
Volume 14, Issue 4 (12-2012)
Abstract

Background and Objective: Sphingosine-1-phosphate (S1P) is involved in regulation of proliferation, differentiation, hypertrophy and anti-apoptosis and activation of satellite cells. This study was done to evaluated the effect of 8 weeks resistance training on sphingosine-1-phosphate level and gene expression of SK1 enzyme, isoforms of MHCs in skeletal muscles of male Wistar rats. Materials and Methods: This experimental study was done on Twenty four 8-week-old 190-250 gr male Wistar rats. The rats were allocated randomly into control (N=12) and training (N=12) groups. Resistance training was done using a 1 meter height ladder with 2 cm grid with an 85 degree incline, and weights attached to rat's tails. The content of S1P present in the chloroform layer was determined by means of high performance liquid chromatography (HPLC). Determination of relative mRNA expression was performed by Real-time PCR. Data were analyzed using SPSS-17, Kolmogorov-Smirnov and independent t-test. Results: Resistance exercise training increased the total content of S1P in FHL (fast-twitch) and soleus (slow-twitch) muscles in comparison with control group (P<0.05). Resistance exercise training changed the gene expression of FHL SK1, SOL SK1, FHL MHC I, Sol MHC I, FHL MHC IIa, Sol MHC IIa, FHL MHC IIb, Sol MHC IIb, FHL MHC IIx, Sol MHC IIx in comparison with control group (P<0.05). Conclusion: This study showed that S1P level and gene expression of SK1, MHCs increased at skeletal muscles after training.
Kouhi F, Moradi F, Absazadegan M,
Volume 16, Issue 1 (3-2014)
Abstract

Background and Objective: Previous studies have reported inconsistent findings about the effect of endurance training on level of interleukin-18 (IL-18) and high-sensitivity C-reactive protein (hsCRP) in obese individuals. This study was performed to determine the effect of resistance training on serum level of IL-18 and hsCRP in obese men. Materials and Methods: In this clinical trial, eighteen obese men were randomly divided into training and control groups. After 12-hours fasting, height, weight, body mass index, body fat percent, serum level of IL-18 and hsCRP were assessed before and after training period. Resistance training protocol consisted of twelve weeks training, 3 sessions training per week, each session for 60 minutes. Results: Mean±SD of IL-18 were 323.34±46.57 pg/ml and 239.43±53.75 pg/ml in training and control groups, respectively. Mean±SD of hsCRP was 3.83±3.65 µg/ml and 3.03±2.98 µg/ml in training and control groups, respectively. This difference was not significant. Conclusion: Performing resistance training for twelve weeks did not significantly reduce IL-18 and hsCRP in obese men.
Eslami R, Gharakhanlou R, Mowla J, Rajabi H, Mohammadkhani R,
Volume 16, Issue 1 (3-2014)
Abstract

Background and Objective: Trophic factor family plays a key role for neuromuscular system healthy. This study was carried out to determine the effect of one session of resistance exercise on protein content and mRNA expression of NT4/5 in rat slow and fast muscles. Methods: In this experimental study, sixteen adult male rats randomly were allocated into resistance exercise (T) and control groups. The resistance training protocol consisted of climbing a 1-meter–long ladder, with a weight attached to a tail sleeve. Quantitative Real time RT-PCR for NT-4/5 expression and ELISA Kit for protein assay were used. Results: Resistance training significantly decreased mRNA expression and increased protein of NT4/5 in soleus muscle (P<0.05). Significant alteration was not detected in flexor hallucis longus muscle. Conclusion: One session of resistance training can alter protein and mRNA of NT-4/5 in skeletal muscle and this alteration was dependent on muscle type.
Amouzad Mahdirejei H , Aghababaeian A, Mirsaiedii M, Fadaei Reyhan Abadei S, Abbaspour Seyedii A,
Volume 16, Issue 2 (7-2014)
Abstract

Background and Objective: Fluctuation in the homeostasis system is one of the main causes of heart attacks. There are contradectry reports regarding the effect of regular exercise, particularly resistance training on hemostasis indeces. This study was done to determine the effect of 8 weeks of resistance training on hemostasis indeces and lipid profile in adult men. Methods: In this clinical trail study, 16 adult men were randomly divided into interventional and control groups. Subjects in interventional group participated in a resistance training program including a period 3 days a week for 8 weeks session. Body mass index, level of fibrinogen, protrombin time (PT), partial thromboplastin time (PTT), platelet count, D-dimer fibrinolytic factor, Cholesterol, Triglyceride, HDL and LDL were measured for each subject. Results: After 8 weeks of resistance training, the level of fibrinogen, PT, PTT and platelets count were significantly reduced and D-dimer fibrinolytic factor increased in interventional group in compared to controls (P<0.05). Serum level of Cholesterol, Triglyceride, HDL and LDL had no significant change in interventional group in comparsion with the controls. Conclusion: Resistance training reduces hemostasis indeces in adult men.
Moharrami R, Shojaeddin S, Sadeghi H,
Volume 16, Issue 4 (12-2014)
Abstract

Background and Objective: The shoulder joint is continuously under various pressures. Shoulder impingement syndrome is the most common problem. Stability of the shoulder is due to the interaction between static and dynamic stability which is caused through mediation of sensorimotor system (proprioception). This study was investigated to determine the effect of 6 weeks resistance training with elastic-band on proprioception in male athletes with shoulder impingement syndrome. Method: In this quasi-experimental study, 30 adult males with shoulder syndrome divided into control and interventional groups. Subjects in interventional group were received resistance exercises with elastic-band for six weeks. The shoulder joint proprioception, perior and at the end of study in 0, 45 and 90 angle were measured using isokinetic, Biodex System 3. Results: Significant improvement in the shoulder joint proprioception in 0, 45 and 90 angle were observed in interventional group in comparision with controls (P<0.05). Conclusion: Six weeks of resistance training with elastic-band improved shoulder joint proprioception of males with impingement syndrome.
Moradi F,
Volume 17, Issue 4 (12-2015)
Abstract

Background and Objective: A few data is available about effect of exercise training on level of resistin and novel insulin resistance indices in underweight inactive men. This study was performed to determine the effect of a period of resistance training on serum level of resistin and insulin resistance indices in underweight inactive men. Methods: In this clinical trial study, nineteen underweight inactive men were randomly divided into resistance training (n=9, 20.9±3.6 yr) and controls (n=10, 21.4±2.7 yr). Resistance training protocol consisted of twelve weeks weight training, 3 sessions training per week, each session for 60 minutes. General characteristics of subjects, serum concentration of resistin, and indices adiponectin-resistin (AR), homeostasis model assessment - adiponectin ratio (HOMA-AD) and insulin resistance (IRAR) were assessed before and after the training. Results: HOMA-AD and IRAR were reduced in resistance training group compare to controls, while serum resistin and AR did not significant reduce. Pretest-posttest difference means of HOMA-AD and IRAR were different between resistance training and control groups, while no significant differences were observed in the case of serum resistin concentration and AR. These parameters were not significant in the control group. Conclusion: Resistance training is associated with improved insulin resistance (decrease of HOMA-AD and IRAR indices), while did not change resistin level in underweight inactive men.
Mir E, Attarzadeh Hosseini Sr , Hejazi K, Mir Sayeedi M,
Volume 18, Issue 1 (3-2016)
Abstract

Background and Objective: Adiponectin is one of the adiposaitocines which secret from adipose tissue and is very effective in the pathogenesis of obesity and its associated disorders, especially in elderly people who are at risk for cardiovascular disease. This study was carried out to evaluate the effect of eight weeks of endurance and resistance training on adiponectin level, insulin resistance index in inactive elderly men. Methods: In this quasi-experimental study, 24 inactive elderly men were non-randomly divided into interventional and control groups. The combined training included endurance training (with intensity of 60-70% of maximum heart rate reserve) and resistance training (with intensity of 70% one repetition maximum). The training performed 3 times per week (one hour session) for 8 weeks. Results: The eight weeks of combined training increased the adiponectin level in interventional group compared to the controls (P<0.05). Insulin and FBS levels, insulin resistance index, and body fat percentage significantly reduced in interventional group compared to the controls (P<0.05). Conclusion: The eight weeks of combined training increases the adiponectin level and reduces insulin resistance in elderly men.


Raheleh Kermanizadeh , Amirhossein Haghighi , Roya Askari ,
Volume 20, Issue 2 (7-2018)
Abstract

Background and Objective: Obesity and overwight affects on respiratory phyological indeces including pulmonary voulume, spirometery function, mechanical function of air ways neuro-muscular functions and capacity of exchange of gases. The obese and overwight subjects have high risk in reduction respiratory valume syndrome. This study was done to compare the effects of three resistance training programs with different intensities on pulmonary function, physical function and body composition in overweight girls.
Methods: In this quasi - experimental study, thirty overweight inactive girls were non-randomly divided into 3 equal groups (n=10) of resistance training with different intensity based on their 1 RM (light, 55-65%, moderate, 65-75%, and heavy, 75-85%, repsctively). The training progams were done for 9 weeks (3 sessions per week). Each session consists of 5 stations with 3 sets while rest intervals between the repetiotions and stations were 60-90 seconds and 90-120 seconds, respectively. Before and after the end of the training programs, spirometry, body composition, muscular strength and endurance of the upper body and VO2max were measured.
Results: 9 weeks resistance training program with 55-65%, 65-75%, and 75-85% 1RM intensities had no significant effect in the spirometry parameters, body weight, body mass index, upper body muscular endurance and VO2max. Fat percentage in 55-65% group significantly reduced in compared to those of 65-75%, and 75-85% 1RM groups (P<0.05). The upper body muscular strength in group with 75-85% 1RM significantly increased in compared to groups with 55-65% and 65-75% 1RM (P<0.05).
Conclusion: Overweight girls can apply resistance training with 55-65% 1RM to reduce the percent of body fat, and enhance the upper body strength through trainings with 75-85% 1RM. In relation to pulmonary function indices and indices of physical function and body composition, there was no dference between three training programs.
Zohre Amirkhani , Mohammad Ali Azarbayjani ,
Volume 20, Issue 3 (10-2018)
Abstract

Background and Objective: Oxidative stress plays an important role in the pathogenesis of some diseases such as atherosclerosis and doing high intensity training may enhance oxidative stress. This study was done to evaluate the effect of eight weeks resistance training on malondialdehyd, total, antioxidant capacity, liver enzymes and lipid profile in overweight and obese women.
Methods: In this quasi-experimental study, 16 overweight and obese women were non-randomly divided into intervention (n=9) and control (n=7) groups. The resistance training included the resistance training (with intensity of 50-80% one repetition maximum) that lasted for 8 weeks and 3 sessions per week. Every session lasted for 60 minutes. Malondialdehyd, total antioxidant capacity, liver enzymes and lipid profile for each subject was measured.
Results: The eight weeks resistance training significantly increased total antioxidant capacity high density lipoprotein and triglyceride in interventional group in compared to controls (p<0.05). The eight weeks resistance training significantly reduced alanine aminotransferase in comparison with control group (p<0.05).
Conclusion: Eight weeks resistance training by reducing malondialdehyd and increasing total antioxidant capacity may reduce the risk of atherosclerosis disease and improving cardiovascular health.
Rasoul Eslami , Bakhtyar Tartibian , Mojtaba Najarpour ,
Volume 21, Issue 3 (10-2019)
Abstract

Background and Objective: Multiple sclerosis (MS) is the most common disabling neurological disease which leads to nerve conduction velocity (NCV) reduction and finally reduction of functional abilities. This study was executed to determine the effect of six weeks resistance training on NCV, strength, balance and walking speed in Multiple Sclerosis patients.
Methods: In this quasi-experimental study, 23 MS patients were nonrandomly divided to control (n=10) and resistance training (n=13) groups. Two days before and after training program, NCV, strength, balance and 25 foot walking tests was executed. Resistance training protocol was included tree sessions per week for six weeks and intensity of training was 55% of 1RM.
Results: Six weeks of lower body resistance training significantly increased nerve conduction velocity (NCV) (P<0.05), strength (P<0.05), balance (P<0.05) and walking speed (P<0.05) in MS patients.
Conclusion: Controlled resistance training can improve Multiple Sclerosis patient’s nerve conduction velocity which finally can lead to improve functional abilities, such as strength, balance and walking speed.

Shahram Sohaily , Mojtaba Eizadi , Daniel Tarmast ,
Volume 21, Issue 4 (12-2019)
Abstract

Background and Objective: Hormone and genetic disorders are the most important causes of hyperglycemia in obese and diabetes patients. This study was done to determine the effect of the resistance training program on FOXO1 gene expression in subcutaneous adipose tissue as an effective transcription factor in insulin signaling pathways, fasting glucose and insulin resistance in type 2 diabetic rats.
Methods: In this experimental study, type 2 diabetes induced by high fat diet and Streptozotocin (STZ, 30 mg/kg/bw) intraperitoneal injection in 14 male wistar rats (220±20 g) .Animals were randomly allocated into exercise (n=7) and control (n=7) groups. Exercise group were participated in resistance training program (6 weeks, 5 days/weekly). Fasting blood glucose and insulin as well FOXO1 gene expression in subcutaneous adipose tissue were measured lasted exercise session in the two geoups.
Results: Resistance training  significantly reduces in fasting glucose, insulin resistance and FOXO1 gene expression in subcutaneous adipose tissue in exercise group in compared to control group (P<0.05).
Conclusion: Resistance training lead to decrease of insulin resistance and blood glucose by inhibiting FOXO1 gene expression in subcutaneous adipose tissue in diabetic rats.

Enayatollah Asadmanesh, Maryam Koushkie Jahromi, Mahdi Samadi, Farhad Daryanoosh, Javad Neamati,
Volume 22, Issue 2 (6-2020)
Abstract

Background and Objective: Physical exercise and nutrition supplements are recommended interventions to reduce cachexia. This study was conducted to determine the effect of resistance training and resveratrol supplementation on muscle regeneration indices of MyoD (myoblast determination protein) and eMHC (embryonic Myosin Heavy Chain) in CT-26 colon cancer mice.
Methods: This experimental study was performed on 20 six-week-old BALB/c mice to which CT-26 tumor was implanted. The mice were divided into four groups of resistance training, resveratrol, combination of resveratrol with resistance training, and control. The resistance training group performed six weeks of progressive resistance training. The resveratrol group received 100 mg/kg resveratrol per day, and the control and resistance training group received the solution of Methyl cellulose through gavage. In gastrocnemius muscle MyoD protein and eMHC level were measured using western blot and ELISA methods, respectively.
Results: eMHC protein in combination of resveratrol with exercise group (4.66±0.25) increased significantly compared to the exercise group (3.46±0.64) (P<0.05). Body weight of mice without tumor (21.50±1.30) in the resistance training group increased significantly compared to other groups (P<0.05). There was no significant difference in the tumor weight of mice and MyoD protein in expermental groups.
Conclusion: Regarding the increasing effect of combination of resveratrol with exercise group compared to resistance training group on eMHC, resveratrol supplementation at higher doses may be recommended along with resistance training to improve muscle regeneration.
Ali Ahmadi , Ali Akbar Niknejad , Masoumeh Habibian ,
Volume 22, Issue 4 (12-2020)
Abstract

Background and Objective: The acute exercise leads to the induction of some cardiac and inflammatory biomarkers that are related to factors such as severity, type, training experience, gender and environment. This study was conducted to compare the effect of acute endurance and resistance training at two different intensity levels of high-sensitivity cardiac Troponin T (hs-cTnT) and tumor necrosis factor alpha (TNF-α) in male runners and bodybuilders.
Methods: In this quasi-experimental study, 20 male runners and bodybuilders with an age range of 20-24 years were purposefully and accessibly selected. The study was performed with a pre-test-post-test design on 10 male runners (endurance training) and 10 bodybuilding men (resistance training). The runners ran 6 km with moderate (70-75% of reserve heart rate) and high (85-85% of reserve heart rate) intensities at intervals of one week, during separate sessions. Bodybuilders also performed resistance training at moderate (70-75% of one repetition maximum) and high (80-85% of one repetition maximum) intensities.  Bodybuilders also performed resistance training at moderate (70 to 75% of a maximum repetition) and high (80 to 85% of a maximum repetition) intensities. Blood samples were taken before and immediately after exercise. Then the serum levels of hs-cTnT and TNF-α were measured.
Results: The serum level of hs-cTnT and TNF-α was significantly increased after acute running and resistance training with moderate and high intensities (P˂0.05), but intense acute exercise had a greater effect on increasing the levels of these variables. Also, the acute effect of intense aerobic exercise was associated with a greater increase in hs-cTnT level in compared to moderate-intensity aerobic exercise, high and moderate-intensity resistance training (P˂0.05).
Conclusion: In endurance and resistance athletes, the hs-cTnT and TNF-α responses are affected by the intensity of training and increase more with intense training. But the high intensity aerobic exercise is associated with a greater increase in hs-cTnT levels.
Maliheh Bagheri , Amin Farzaneh Hesari, Hajar Abaszadeh ,
Volume 24, Issue 1 (3-2022)
Abstract

Background and Objective: Sphingosine-1-phosphate (S1P) plays an important role in muscle biology and is involved in hypertrophy and activation of satellite cells. This study was done to determine the effect of eight weeks of concurrent training with different order on S1P in fast and slow muscles in wistar rats.
Methods: In this experimental study, 40 male wistar rats (weight 180-200 gr) were randomly allocated into 5 groups including control, resistance training, endurance training, resistance- endurance training, endurance- resistance training. Resistance training consisted 1-meter ladder climbing with the loading of percent of overloading test (%75 of weight body) in the first week and increased to 30 gr per week. Endurance training consisted of running on treadmill with speed of 12 m/min and 10 minutes in the first week to 30 m/min and 60 minutes in the last week. The resistance- endurance group performed resistance training 5 minutes before endurance training and the endurance- resistance group performed endurance training 5 minutes after resistance training. The protein level of S1P was measured in flexor hallucis longus (FHL) and soleus muscles.
Results: The S1P level in fast and slow twitch muscle increased significantly in endurance- resistance training, resistance- endurance training and resistance training compared to controls (P<0.05). There were no significant differences between concurrent training with differing order.
Conclusion: It seems that exercise order in concurrent training result in no different effect on S1P level in fast and slow twitch muscles in wistar rats.
Soren Valafar , Eidy Alijani , Fariba Aghaei , Mahsa Mohsenzadeh ,
Volume 24, Issue 1 (3-2022)
Abstract

Background and Objective: Type 1 diabetes (T1D) is highly prevalent in the group of autoimmune and inflammatory patients. Tumor necrosis factor-alpha (TNF-a) and interleukin-10 (IL-10) plays an important role in regulating complex interactions between pancreatic beta cells and immune cells in the development of T1D. This study was performed to determine the simultaneous effect of resistance training and endothelial progenitor cell injection on blood glucose levels and protein expression of proinflammatory factors TNF-a and IL-10 in muscle tissue of streptozotocin (STZ) induced diabetic male rats.
Methods: In this experimental study, 36 male Wistar rats weighing approximately 200±20 g and six weeks old were randomly divided into six groups. Induction of diabetes was performed by intraperitoneal injection of STZ at a dose of 45 mg/kg body weight. Groups included diabetes + stem cell injection + resistance training group, diabetes + resistance training group, diabetes + stem cell injection group, control diabetic group to control the passage of time, and healthy basal and diabetic groups for defaults. Exercises were performed for 17 sessions of resistance training, including climbing ladders with increasing weight three days a week in the same laboratory conditions. Endothelial progenitor cells were cultured by femoral bone marrow aspiration and culture and then injection into the tail vein. 68 hours after the last training session, blood glucose levels were assessed by ELISA and the expression of TNF-a and IL-10 protein in muscle tissue was assessed by Western blotting.
Results: Endothelial stem cell injection, resistance training and resistance training with the simultaneous injection of endothelial stem cells significantly increased the anti-inflammatory factor IL-10 in the skeletal muscle tissue of diabetic rats in compared to control group (P<0.05). Expression of the anti-inflammatory factor IL-10 in the skeletal muscle tissue was significantly increased in resistance training plus the simultaneous injection of endothelial stem cells group in compared to injection of stem cells and resistance training groups (P<0.05). Glucose concentration in the skeletal muscle tissue was significantly reduced in resistance training plus the simultaneous injection of endothelial stem cells group in compared to injection of stem cells and resistance training groups (P<0.05).
Conclusion: It seems that 17 sessions of resistance training reduces blood glucose level and improves inflammatory conditions in response to an increase in IL-10 and a decrease in TNF-a in a group of diabetic rats with resistance training and simultaneous injection of endothelial progenitor cells in diabetic male rats.

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مجله دانشگاه علوم پزشکی گرگان Journal of Gorgan University of Medical Sciences
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