درخت حوزه‌های تخصصی

Given the critical role of sport managers’ behaviors in developing efficient processes in sport settings, the aim of the current study was to provide a model of sports managers’ strategic behavior. The research participants were selected theoretically through a snowball sampling approach. Semi-structured interviews were conducted with professional sport managers to collect the research data. Grounded Theory (GT) with a Systematic Approach was applied for data analysis. The results of qualitative data analysis from the interview were presented as a paradigm model of strategic behavior of sports managers in the form of six dimensions of the paradigm model, including causal condition, the main phenomenon (strategic behavior of managers), contextual condition, intervening condition, action /interaction strategy, consequences. The categorization based on the relationships between the concepts around the behavior of managers presents the paradigm model of the strategic behavior of sports managers. According to the findings, managers can eliminate many of the strategic barriers in sports organizations by institutionalizing strategic thinking and making decisions based on strategic behavior. 

Purpose: The activity of plasma liver enzymes is intensified under the influence of sports activities, which is affected by the duration, intensity, type and method of training. The purpose of this study was to investigate the effect of a special endurance training session on the activity of serum alkaline phosphatase and aspartate aminotransferase liver enzymes in inactive young men. Methods: In this semi-experimental study, 16 young inactive men were purposefully selected and examined in two groups (experimental and control). The experimental group performed Bruce's protocol after preliminary warm-up. Blood samples were collected before the test, immediately after the test, 24 hours and 48 hours after the test from both groups at the same time, and the amount of serum ALP (Alkaline Phosphatase) and AST (Aspartate Transaminase) enzymes were measured using an Auto analyzer. Statistical analysis of the data, independent T-test was used to compare the results of two groups and Bonferroni's post hoc test was used to determine the difference between different stages of sampling with a minimum significance level (P≥0.05). Results: The results of the independent T-test in the comparison between the groups showed that there is a significant difference between the two groups in the amount of ALP enzyme in the time intervals immediately after the activity (P≥0.020), but in the time intervals of 24 (P≥0.177) and 48 hours (P≥0.136), there is no significant difference between the two groups after the activity. The results of the independent T test did not show any significant changes in the amount of AST enzyme in any of the time intervals in the comparison between groups. Conclusion: Fatigue-inducing sports activity leads to an increase in the amount of enzymes, ALP, this increase can be a sign of damage to liver cells or heart muscle. Considering the role of recovery in liver damage, it seems that by considering enough rest time, it is possible to help improve the adaptation process while preventing the occurrence of muscle and liver damage