درخت حوزه‌های تخصصی

The spread of coronavirus in the world has had various effects on industries, especially the sports industry. The purpose of this study was to explain and classify the effects of coronavirus outbreak on the dimensions of the sports industry. The present study was applied in nature, mixed in terms of data retrieval and descriptive-exploratory in terms of data analysis method that data collection was done in the field. The statistical population in the qualitative section included sports experts, 18 people were purposefully selected, and the statistical population in the quantitative section included all activists in the field of sports and sports industry, of which 600 samples were selected by simple random sampling. Data collection in the qualitative part was done by the systematic method of data theory and in the quantitative part, using a researcher-made questionnaire obtained from the qualitative part of the present study with 79 items in 2 dimensions of direct effects and indirect effects on a 5-point Likert scale. Research data were analyzed using descriptive and inferential statistical methods with the help of SPSS24 and Amos statistical software. The results showed that the outbreak of coronavirus had a direct and indirect role in the production and distribution sectors, private and public sectors, sports education and research, trade, events and competitions, technology, services and economics of the sports industry. This finding can help the country's sports managers and officials to improve the situation of the sports industry in the post-Corona era.

The purpose of this study was to investigate relationship between coaching leadership behaviors and burnout (physical and emotional exhaustion, feeling of progression and feeling of unworthy) in male athletes. This was an applied and descriptive study. The statistical population of this research was all male athletes in age range of 18-23 (young). A total of 196 athletes were selected by simple random sampling. The instrument of study included two questionnaires: Raedeke & Smith (2001) Athletes 'Burnout Questionnaire and Chelladurai (1998) Coaching Leadership Report. Their internal consistency with Cronbach's alpha for athletes' burnout questionnaire was 0.765 and leadership behaviors of coaches 0.784. Pearson correlation coefficient and regression analysis and SPSS-22 software were used to investigate the hypotheses. A linear model (structural equation) was used to present the model. According to findings of research, coaches are more likely to use behavioral training and less than arbitrary behavior. There was a significant relationship between behavioral training behavior and all scales (physical exhaustion, feelings of depreciation and reduction of progress), between the authoritarian behavior and physical-emotional exhaustion scales, and feeling of progression reduction in scorpion between democratic behavior and a significant positive correlation scale of progress reduction feeling and bu.

Introduction: Adolescents' physical literacy and physical activity influence their lifestyle behaviors and health-related readiness into adulthood. Lack of information about the state of physical literacy has led researchers to examine the state of physical literacy in adolescents in Tehran. Methods: The method of the present study was descriptive and performed in the 12-18 years adolescents in Tehran. The sample was 836 adolescents selected by multi-stage cluster sampling from different areas of Tehran. Subjects 'physical literacy was assessed using the adolescents' physical literacy questionnaire. This questionnaire with three dimensions examines adolescents' physical literacy and has an internal consistency coefficient (0.951) and retest reliability (0.981). Results: The total mean scores of physical literacy in adolescents was 90.04 ± 17.12 and the desired norm was determined with a standard deviation of high and low (107.16-72.94). The results showed that adolescents' physical literacy scores in all dimensions increase with age, also, the scores were higher in boys than girls in all dimensions. Conclusion: Similar results have been reported for differences in gender and age in the Physical Literacy of Canadian children. The norm presented in this study can be a basis for measuring and comparing the levels of physical literacy of adolescents in Tehran.

The purpose of this research is to design a framework for strategic innovation in sports businesses based on Grounded theory. Data was collected using interviews, which involved 19 participants including sports management professors, sports business owners, as well as sports managers. Based on Grounded theory, 156 open codes, 18 substantive codes, and 6 theoretical codes were identified. The factors affecting strategic innovation in sports businesses included institutional factors (culture, institutions, and laws), innovative human resources (providing innovative ideas, recognizing innovative opportunities, and strategic thinking), knowledge of the team and business environment (team, market, and macroeconomics), infrastructure (education, technology, and university-industry connection), and management of innovative business processes (marketing research, branding, empowerment, and human resource capability). The development of strategic innovation in sports businesses is a topic that has received less attention, and understanding the factors affecting it can provide the basis for promoting and developing the innovation ecosystem in sports.