عنوان

تأثیر چهار هفته تمرین هوازی و مکمل‌دهی ال-آرژنین بر غلظت برخی شاخص‌های هورمونی، متابولیکی و آمادگی جسمانی پسران نوجوان,‮‭Effect of four weeks aerobic training and l-arginine supplementation on some hormonal and metabolic indicators concentrations and physical fitness in adolescents boys‬

SD. Change any of the parameters (mean and standard deviation) of two stages repeated ANOVA and post hoc tests Bonferuni analysis. Differences between groups were determined by t-test. All statistical analyses were performed using the SPSS-18 software. The significance level was set at <0.05. Results: In an training, supplementation and combined groups changes in NO and serum growth hormone and aerobic capacity were significant compared to the control group. However, NO changes in the combined group were significantly greater than in the high-intensity interval aerobic exercise training group. Also, peak anaerobic power was significantly increased in the training and combined groups. In addition, changes in agility scores were not significant in any of the groups. Conclusion: Based on the results of the present study, it seems that the use of arginine supplementation in combination with intense aerobic exercise significantly improves growth hormone, NO and performance indices▒Background: The effects of high-intensity interval aerobic exercise training and arginine supplementation on growth hormone, metabolic variables such as nitric oxide (NO), and the performance of adolescent boys are not well understood. Thus, the aim of this study was to investigate effect of four weeks aerobic training and l-arginine supplementation on some of hormonal and metabolic indicators concentrations and physical fitness in adolescents boys. Methods: In this semi-experimental study design, 35 (age 12-15 years) adolescence boys were selected. Subjects were randomly divided into four groups: arginine (5 g per day), aerobic training (3 sessions per weeks), control and combined. High-intensity interval aerobic exercise training consisted of 3 bouts of 15-minute runs with an intensity of 80-70 of the maximum oxygen consumption on the treadmill. Blood samples were taken 48 hours before and after the research protocol. Then, resting NO, growth hormone (GH), anaerobic power, maximal oxygen consumption and agility were measured. The distribution normality of variables was tested by the ShapiroWilk test. Descriptive statistics were expressed as Mean