درخت حوزه‌های تخصصی

The purpose of this study was to investigate the relationship between narcissism and coping strategies with competitive stress in elite athletes. This research was a descriptive-correlation research method (structural equation modeling). In terms of purpose, the present study was an applied type of research and, in terms of time, was a kind of future research. The statistical population of this study was all elite male and female athletes of East Azarbaijan province in two age groups of youth and adults from team who participated in the championship of 2019. According to the Cochran formula 270 athletes were selected as a sample size. To collect demographic information and measure variables, Individual information form, narcissism and coping strategies in sports competition questionnaires were used. Kolmogorov-Smirnov test (KS) was used to verify the natural distribution of data, Cronbach's alpha coefficient to calculate the internal consistency of instrument, Pearson correlation coefficient to determine the correlation between variables, Confirmatory factor analysis (CFA) was used to study the structural equation modeling and (SEM) models to test the fitting of the base model with the data and to determine the structural relationships between the variables at 95 confidence level, using SPSS22 and Liserl software version 8.53. The results showed that pride had with the greatest impact and the most important role on thought control strategy, imagery, logical analysis, search support, evacuation of unpleasant emotions, distraction of mind and surrender/withdrawal. To be Right had the greatest impact and the most important role on relaxation strategy, efforts to deal with competitive stress in elite athletes.

Background: Autism spectrum disorder is a neuro-developmental disorder with a significant deficiency in communication characteristics, social interactions and stereotyped behaviors. Aim: The purpose of this study was to investigate physical activity participation in Iranian children and adolescent with autism spectrum disorders. Materials and Methods: The research method was descriptive and survey. The statistical samples were 370 children and adolescent with ASD, age 8-20 years from Iran. The international physical activity questionnaire for older children and adolescents used for measuring physical activity levels. Data analyzed by using SPSS<sub>23 . Results: The results showed that 73.8% of participants were inactive during the last 7 days; 17.8% of them were active occasionally (1 to 2 times); 6.5% (3 to 4 times) and 1.1% (5 to 6 times) were physically active. During the last 7 days on weekends, 58.2% reported usually sitting position, 22.2% walking or standing, and 14.6% running or active playing and only 1.1% reported lots of running or playing. There was no significant difference in physical activity levels between girls and boys. Conclusion: The results showed the limited participation in physical activity among Iranian children and adolescents with ASD. This study seems to be a helpful for identifying the patterns and promotion of physical activity.

Although the succession planning literature focuses more on managerial and staffing levels in organizations, it can also be used for players in clubs and sport teams. The purpose of the research was to identify and evaluate a model of player succession in Iranian football premier League. The research method was mixed (qualitative and quantitative). The statistical population of this research in the qualitative section includes 16 specialists and experts in football, and in the quantitative part of the research, all managers, athletes, coaches and football referees in the Premier League in 2020, and finally 286 subjects were studied through stratified random sampling in quantitative phase. Research hypotheses were examined using correlations and structural equations modelling . A total of 189 primary codes (concepts) were extracted in the coding process, which after validation, 33 primary codes (concepts) were compiled. In the model, causal conditions included binding or motivating factors as well as the process of replacing players. Underlying conditions involved networking to develop a player replacement program, interacting with other organizations, formulating binding strategies, and setting a budget to promote win-win thinking in the football club succession program in Iran.