TY - JOUR T1 - The effect of small sided games on the youth soccer players’ IL – 18 and neutrophil levels TT - تاثیر بازی در زمین های کوچک بر IL-18 و نوتروفیل های فوتبالیست های جوان JF - RJMS JO - RJMS VL - 20 IS - 117 UR - http://rjms.iums.ac.ir/article-1-2970-en.html Y1 - 2014 SP - 40 EP - 48 KW - Small sided games KW - Youth soccer players KW - Neutrophils KW - IL-18 N2 -   Background: Playing soccer in Small Sided Games (SSG) changes the immune system. The present study was aimed at investigating the effect of SSG on the youth soccer players IL – 18 and neutrophils.   Methods : Study was a semi-experimental type.To do so, from 24 soccer players aging between 15 to18 years that participated in this research,16 male soccer players were assigned into experimental groups (which included two teams with 4 members in each team, with mean and standard deviation, age: 16.13±0.88 height: 167±6.66 Centimeters weight: 58.70 ±7.34 Kilograms, and BMI: 20.96±1.79 who played in fields with the dimensions of 25×20 and 35×28.8 meters respectively. Eight players (with mean and standard deviation, age: 16.18±1.07 height: 171±6.75 Centimeters weight: 58.86 ± 8.21 Kilograms, and BMI: 20.03±2.14) were used as control group who did not play. The number of neutrophils and the level of IL – 18 were measured immediately before and after exercise. The collected data were analyzed through ANOVA and Scheffe follow-up test in the significant level of p M3 ER -