فهرست مطالب زینب میرزاییان وناب

parental support is an important predictor of adolescents' participation and levels of leisure-time physical activity. This study aimed to investigate the structural relationships between parental support, restructuring ability, subjective norm and leisure time physical activity.

During a descriptive research of the correlation type, data were collected using questionnaires of leisure physical activity (Godin, 2011), subjective norm (Kim et al., 2019), restructuring ability (Xie et al., 2018a) and perceived parental support (Xie et al., 2021),641 adolescents between 12 and 18 years of age, boys and girls, who had a history of physical activity in their leisure time, were collected from May to June 2022 by purposive sampling and analyzed with SPSS 25 and SmartPLS 3 software.

Path analysis shows that all the hypotheses were statistically significant at the P<0.05 level. specifically, the subjective norm had a positive effect on the restructuring ability and the of leisure physical activity adolescents (P<0.05). In addition, the restructuring ability had a positive effect on the subjective norm and leisure physical activity adolescents (P<0.05). Finally, parental support had a positive effect on adolescent's restructuring ability, subjective norm and leisure time physical activity (P<0.05). The coefficient of determination for leisure time physical activity was equal to 27.8% and it shows the concept that the variables of parental support, subjective norm and the restructuring ability to rebuild together have predicted 27.8% of leisure time physical activity. but both variables of parental support and leisure time physical activity predict a total of 52.6% of adolescents' leisure time physical activity, the share of leisure time physical activity was higher than parental support.

The results emphasize the importance of parental support for adolescents' leisure time physical activity and helping adolescents to develop the restructuring ability and subjective norm as a way to promote leisure time physical activity among adolescents. As a result, such parental support, especially for adolescent boys and girls with poor health status and high body mass index, increases the leisure time physical activity of adolescents and improves their overall health.

The purpose of this research is to study the impact of strategic entrepreneurship on achieving competitive advantage in sports boards of Khuzestan province. The research method is analytical. The population consisted of president and vice president of the board, executive committee, and elite athletes (n = 80). This research was carried out between 2015 and 2016. The analytical sample was for the total number. For discussing the validity and reliability and presenting a structural model, PLS algorithm is used. The results showed a competitive advantage, but it was positively affected by indirect effects such as 0.06 percent entrepreneurial culture, and 0.01 entrepreneurial leadership through strategic mediator's office. This is while changing competitive advantage does not have a positive effect on entrepreneurial mindset mediation. As a result, due to the lack of a direct impact on the competitive advantage of strategic entrepreneurship and its direct impact through strategic office sources it could be said that the entrepreneurial dimension itself does not create a competitive advantage, but sport boards could benefit through entrepreneurial leadership and creating an entrepreneurial culture when creativity and innovation has become the strategic resources.