درخت حوزه‌های تخصصی

Grassroots football is a fundamental and essential part of professional football; therefore, the current research was conducted with the aim of presenting a grassroots football development model in Iran. The current research is applied in terms of purpose and mixed in terms of data collection. In the qualitative part, the systematic approach of grounded theory methods was conducted, and structural equation modeling was used to evaluate and validate the qualitative model. To conduct the interviews, faculty members and sports managers were studied through purposeful approach. In the quantitative part, the research samples included sports managers, coaches and players selected via convenience sampling. Based on the results, causal conditions include factors related to facilities and resources, human resources and managerial factors; context includes factors related to family, education and motivational factors; Intervening factors include economic-political and legal factors; the strategies include human resource management strategies, development of scientific management and coaching, synergy of related organizations and the use of income generation strategies. The consequences include the development of professional football and sustainable development through sports. According to the results of quantitative part, the validity of the research model was approved. the proposed model can be presented as a scientific framework and guidance based on the knowledge of experts for the country's sports managers in line with the development of grassroots football.

Background and objective: this study was conducted with the aim of investigating the relationship between cardiovascular risk factors and physical activity of retired male teachers of Samen city. Materials and methods: The statistical population of this study included the retired male teachers of Samen city. From the statistical population Using random sampling method, 55 retired teachers were selected as sample. The physical activity level of the subjects was done through the Beck questionnaire. The research measurements included determining body weight, height, body mass index, and determining some risk factors for coronary heart disease, total cholesterol, triglyceride (TG), low-density lipoprotein (LDL), high-density lipoprotein (HDL), and fasting blood glucose (FBG). For data analysis, appropriate descriptive and inferential statistics methods including Kolmogorov Smirnov test and Pearson correlation were used at a significance level of 0.05. Result: After examination, the results of this study showed that there was a negative and significant correlation between the level of physical activity with FBG, TC, LDL and a positive and significant correlation with HDL. While, there was no significant relationship between physical activity level and triglyceride level. Conclusion: Considering the unfavorable situation of cardiovascular risk factors in elderly men, and considering the positive effect of physical activity and exercise in reducing these factors, it is necessary to take measures to emphasize regular exercise programs and improve their health.