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Purpose:The purpose of this study was to examine the motives of sport commitment model of continuous participation in the martial art of taekwondo.Method: This study used survey & cross-sectional method. The data is gathered from 135 participants at taekwondo sport city of Yazd.The collection instrument of data was sporting commitment measure revised. Results: Results from the empirical test of the model conducted with taekwondo athletes participating in a sport program showed that the questionnaire items formed reliable scales upper than 0.75. Pearson correlation test demonstrated that predictor variables sport enjoyment, personal investments, social consteriants and involvement opportunities were related to sport commitment of taekwondo as hypothesized. The stepwise regression analysis findings revealed that sport enjoyment in the first place and personal investments in the second place were the dominant predictors of commitment for this sample. Together, these two model components accounted for 56/8 of the sport commitment variance. Conclusion: The results obtained the recognition of sport's commitment scale performance incentives associated with participation in regular exercise has been shown taekwondo.

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The purpose of current study was to consider a course of doing psychological skills training (PST) program on chosen mental skills and the performance of teenager female taekwondo athletes with mean age 16 years of Iranian national team in 2009. The current study is in tentative type and pre and post test design with control group. To do this 22 people (female) among invited people to the camp of taekwondo national team in teenager level for participation in Asian competition of Kish were randomized and then were separated into two groups of control (10) and experimental(12). Then both of them completed the OMSAT-3 questionnaires in pre-test stage, so that to be evaluated from the view of mental skills and making check list for performance evaluation. According to gained results of questionnaires in pre-test stage and based on subjects weakness in skills of reaction to stress, fear controlling and concentration, an exercise package of purposing, goal setting, relaxation and imagery was used as PST program. After 4 months PST program of both groups was performed. Collected data was considered by independent statistical t-test. The results of this study showed that there is a significant difference between control and experimental groups in skills of reaction to stress and concentration after doing a course of PST program (P < 0.05). But there was no significant difference between these two groups in skill of fear controlling (P > 0.05). At last the results showed that there is a significant difference between control and experimental groups in performance after doing a course of PST program (P < 0.05). 

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This study aimed to investigate the effectiveness of basic taekwondo exercises on the executive functions of children with a learning disorder. For this purpose, 20 boys aged 10 to 12 years with learning disorder in Mashhad were selected and randomly assigned to training and control groups. The training group practiced Taekwondo for 12 sessions, each session lasting 50 minutes, repeating three days a week. The control group also engaged in their normal daily activities during this period. Changes in subjects' cognitive functions were measured before and after the training period by the N-back and the Tower of London tests. Analysis of variance with repeated measures was used for statistical analysis. The results showed that basic taekwondo exercises improve executive functions in the training group; All these changes were significant compared to the control group (p<0/05). Therefore, based on the results of the present study, it can be concluded that basic taekwondo exercises help to improve the executive functions of children with learning disorder by affecting brain areas related to executive functions.