Response and adaptation to exercises
mehran hashemi; Agha Ali Ghasemnyian; akram karimi asl; samaneh hadi
Abstract
Background and Aim:The aim of the present study was to investigate the effect of two types of intense training on the levels of thioredoxin reductase-1 enzyme and malondialdehyde in testicular tissue of male wistar rats.Material and method:19 male Wistar rats,8weeks old and weighing200± 5g, after10 ...
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Background and Aim:The aim of the present study was to investigate the effect of two types of intense training on the levels of thioredoxin reductase-1 enzyme and malondialdehyde in testicular tissue of male wistar rats.Material and method:19 male Wistar rats,8weeks old and weighing200± 5g, after10 sessions of introducing training protocols and after weighing, were randomly divided into3groups(control, intense endurance training, intense training).Intense endurance training protocol included running on a treadmill for8 weeks and intense periodic training protocol included running on a rodent treadmill for 8 weeks. 48 hours after the last training session,the rats were anesthetized with ether and sacrificed and then the testicular tissue was isolated under sterile conditions.The amount of Thioredoxin Reductase-1 was determined by ELISA method and using a spectrophotometer and also the concentration of Malondialdehyde was determined by three Barbituric acid method using a spectrometer. One-way ANOVA with Tukey's post hoc test was used to analyze the data.Result:After8 weeks, the amount of Enzyme in the intense endurance training group and intense periodic training group increased significantly compared to the control group(P<0.05). Also,there was no significant change in the amount of Malondialdehyde in testicular tissue of the intense endurance training group and intense periodic training group compared to the control group(P>0.05).Conclusion: According to the results of this research,it can be said that intense endurance training and intense periodic training has increased the amount of thioredoxin reductase-1 enzyme in a testicular tissue and by creating adaptation in the body's antioxidant system, has not increased malondialdehyde.
Exercise Science
Aghaali Ghasemnian; ahmad azad; mohamadreza seraji vatan
Abstract
Introduction: The purpose of this study was to determine the effect of 70percent reduction in training loade during the tapering on serum levels of cortisol, testosterone and performance changes in trained swimmersMethods: In this quasi-experimental study, 20 trained male swimmers were selected by available ...
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Introduction: The purpose of this study was to determine the effect of 70percent reduction in training loade during the tapering on serum levels of cortisol, testosterone and performance changes in trained swimmersMethods: In this quasi-experimental study, 20 trained male swimmers were selected by available sampling method and participated voluntarily in the study. Then based on the record of 200m freestyle, the subjects were divided into two groups: Taper(n=10) and control(n=10). Both groups initially Participated in6 weeks in incremental exercises training. Then the taper group spent the 14-day period with a 70% reduction in training load and the control group continued training with the same load as before. In both groups, performance tests (upper and lower body strength) and blood samples (for measurement of serum testosterone, cortisol and testosterone / cortisol ratio) were taken at the beginning of the taper and after the end of this period. For determination of testosterone and cortisol levels, ELISA kits was used. Data were analyzed using, paired t-, and covariance tests. Results: The results indicated that after the tapering , there was a significant difference between the two groups in swimming performance (200m freestyle), upper and lower strength, serum cortisol levels, and the ratio of testosterone to cortisol(P< 0/05). However, there was no significant difference in testosterone levels between the two groups(P> 0/05).Conclusion: The findings of this study showed that taper plan with 14-days, improved anabolic conditions and performance in trained swimmers.
