Exercise Physiology
Mohammad Rahman Rahimi; Hassan Faraji; sahar shamlooee
Abstract
Introduction: The aim of the present study was to investigate the effect of MCT1 A1470T polymorphism (rs 1049434) on one repetition maximum muscle strength in young athletes of the speed and endurance strength group in the chest press and squat-smith tests.Methodology: 49 young trained male athletes ...
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Introduction: The aim of the present study was to investigate the effect of MCT1 A1470T polymorphism (rs 1049434) on one repetition maximum muscle strength in young athletes of the speed and endurance strength group in the chest press and squat-smith tests.Methodology: 49 young trained male athletes with average age (24.22±5.54 years), height (178.57±8.91 cm), and weight (75.32±13.31 kg) were included in this research with the entry criteria. Muscle strength was calculated during one session using a maximum repetition test in two parts of the upper body (chest press test) and lower body (squats) for each subject. ARMS-PCR method was used to determine the genotype of the samples.Results: The results showed that there is a significant difference between the genotypes of the MCT1 polymorphism in one repetition of the maximum muscle strength of the Scott-Smith test in athletes (F=51.3, p=0.038) that the TT genotype with the highest strength in the test Scott Smith was with him. LSD post hoc test showed that subjects with genotype (TT+AT) have more strength compared to subjects with genotype (AA+AT). In the strength group between genotypes (AA and TT) in one repetition of maximum Scott-Smith muscle strength, the difference It was significant (p=0.047, F=3.54) and people with TT genotype had the highest strength in the Scott-Smith test.Conclusion: The TT genotype of the MCT1 polymorphism has been associated with the lower body muscle strength of athletes and the effect of this genotype was evident in the athletes of the strength group.
H Faraji; S Dabbagh Nikookheslat
Abstract
Aim: The effect of concurrent training on the levels of hormone factors related to appetite and glucose metabolism are unclear. The aim of this study was to evaluate the effect of three months of concurrent training on Nesfatin, Resistin, Visfatin and peptide YY levels in obese women. Method: Twenty-six ...
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Aim: The effect of concurrent training on the levels of hormone factors related to appetite and glucose metabolism are unclear. The aim of this study was to evaluate the effect of three months of concurrent training on Nesfatin, Resistin, Visfatin and peptide YY levels in obese women. Method: Twenty-six healthy obese women (age: 24.74 ± 4.38 years, body mass index: 31.50 ± 3.64 kg/m2) were randomly selected to participate in this study; then randomly assigned in two experimental (n=11) and control (n=10) groups. The training program was performed for three months, three sessions (15 to 30 minutes per session) at 60% of maximum heart rate and intensity endurance exercise on a cycle ergometer at 60% of one repetition maximum endurance exercise in resistance exercise at the same time. Plasma nesfatin, resistin, visfatin and PYY levels were assessed before and 48 hours after the training period. Data were analyzed using depended and independent t test at P≤0.05. Results: Nesfatin and PYY levels in the experimental group significantly were higher in post- test compared to control group (P<0.05). Resistin and visfatin levels in the experimental group in post-test significantly lower than control group (P<0.05). Conclusion: Based on the findings, concurrent training increases the levels of resistin and PYY, but decreases the visfatin and nesfatin levels. These training effects may have positive on appetite depressing and insulin resistance; also have prevent the incidence of obesity and diabetes problems.
Nahid Bijeh; Hasan Faraji; Babisan Askari; Asra Askari; Saeid Ramezani
Volume 5, Issue 1 , June 2015, , Pages 11-21
Abstract
Aim: The purpose of this study was to examine the response of the visfatin to acute endurance exercise pre and post 8-weeks trainingin untrained obese healthy men. Method: Twenty two subjects (age 29.06±3.83 years, weight 90.96±4.68 kg, height 171.3±4.88 cm, and BMI 30.76±1.8 ...
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Aim: The purpose of this study was to examine the response of the visfatin to acute endurance exercise pre and post 8-weeks trainingin untrained obese healthy men. Method: Twenty two subjects (age 29.06±3.83 years, weight 90.96±4.68 kg, height 171.3±4.88 cm, and BMI 30.76±1.8 kg/m2) were volunteered to participate in the current study. The subjects were divided randomly into two experimental (n=11) and control (n=11) groups. Experimental group participated in 8-week endurance training program three times per week. Exercise intensity increased from 60 percent of maximum heart rate to 65 to 70 percent after 4thweeks until the end of training program. Acute exercise test (cycle ergometer exercise, 30 min at 60 percent of maximum heart rate) were employed before and after training period. Blood samples were collected before, immediately, and 30 min after acute exercise at before and after endurance training period to measure plasma visfatin variations. Results: The results by two-way Anova with analysis showed before training period, visfation levels changes were not sigificant after acute exercise , immediately and 30 min aftery in both groups. Conclusion: These data indicate that endurance training is associated with decrease in resting plasma visfatin and body fat in obese men. Moreover, one bout of endurance training can decrease the plasma visfatin in response to acute exercise.
