نوع مقاله : مقاله پژوهشی
1 کارشناسی ارشد فیزیولوژی ورزشی، واحد یادگار امام خمینی (ره) شهر ری، دانشگاه آزاد اسلامی، تهران، ایران،
2 استادیار، گروه تربیت بدنی و علوم ورزشی، واحد یادگار امام خمینی (ره) شهر ری، دانشگاه آزاد اسلامی، تهران، ایران
عنوان مقاله [English]
The aim of this study was to compare the effect of two modes of small sided games on the cortisol and testosterone levels in soccer players. In this semi-experimental study, 24 soccer players aged 15 to 18 years were selected and randomly divided into three groups included; control, 2 vs. 2 and 4 vs. 4 (n=8). Subjects of 2 vs.2 group performed eight two-minute activities with a one-minute rest on a 20-25m field without a goalkeeper. Subjects of 4 vs.4 group performed four four-minute activities on a 28-35m field without a goalkeeper with two-minute rest after every four minutes. Plasma levels of interleukin-15 and blood neutrophil counts were measured. Data were analyzed by t-test, One-way ANOVA and Tukey post hoc test at the P <0.05. Cortisol and testosterone levels were significantly increased in post-training 2 vs 2 and 4 vs 4 in the small sided games compared to pre-exercise (p=0.001). testosterone levels were significantly higher in 2 vs 2 group than the 4 vs 4 group (p=0.031). Also, there was no significant difference between the two experimental groups in the ratio of testosterone to cortisol (P=0.999).It seems that playing in smaller sided and fewer players leads to an increase in the catabolic hormone environment during the recovery period.