Tehran University of Medical Sciences Iranian Journal of Psychiatry 1735-4587 8 2 2013 06 15 104 7 Vahid Ziaee Sports Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran ; Growth & Development Research center, Tehran University of Medical Sciences, Tehran, Iran Sara Lotfian Sports Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran Amir Hossein Memari Sports Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran 2015 10 14 Objective: The aim of this study was to evaluate changes of anger scores in female karate athletes during 18 months, and to compare anger scores in adolescents who continue or stop training karate. Method: The sample consisted of 18 female elite karate athletes, practicing modern style of karate. To measure anger and its subscales, participants were asked to complete “Adolescent Anger Rating Scale” (AARS) questionnaire in both stages of the study. Athletes were divided in to two groups of “stayer” (n=12) and “quitter” (n=6) if they continued practicing karate or stopped it, respectively. In order to study the changes of anger score with time, paired T test was used. Results: In analysis of changes in anger scores with time, there was a statistically significant increase in instrumental anger (p=0.001) and non-significant increase in other anger scores among 14-year-old girls who continued practicing karate. Conclusion : Increased instrumental anger in female karate athletes could be due to the impact of parti ipation in a combative sport. However, the results should be interpreted cautiously due to limitations of the study. https://ijps.tums.ac.ir/index.php/ijps/article/view/176 https://ijps.tums.ac.ir/index.php/ijps/article/download/176/172