درخت حوزه‌های تخصصی

The purpose of the present study was to investigate the relationship between environmental knowledge and sport event organizers' support for sustainable management in sport. The present study is a descriptive-survey and field study. In order to collect data, a researcher-made questionnaire with 40 questions was used. The face and content validity of the questionnaire was confirmed by a survey of professors related to the research topic. The construct validity was confirmed by confirmatory factor analysis of more than 0.3 and its reliability was confirmed byCronbach's alpha of 0.83. The statistical population of the study consisted of managers and organizers of sport events in ten provinces of the country with approximately 1000 peope. The sample size was 278 according to Morgan table, Due to the size, number and difficulty of access, the available sampling method was used to collect the samples and finally 254 questionnaires were returned. Data analysis was performed using SPSS-19 software. The results showed that the level of environmental awareness in the sample was in the range of 0 to 8 and the mean of the total sample was 3.55 with a standard deviation of 1.61. These results indicate a low level of awareness of environmental issues in the sample under study. In the present study, it seems that there is little awareness of environmental issues that may be effective in shaping people's attitudes toward the intention to support environmental issues in sporting events. Since human attitudes are driven by consciousness, it is therefore necessary to change attitudes by providing a context for raising awareness and enabling appropriate behavior. Therefore, determining the level of knowledge and attitude of individuals is the first step in determining and delivering educational programs.

Introduction: The present study aimed to examine a proposed model for the relationship between resilience and emotional reactions to failure, mediated by self-compassion and Emotion Regulation (ER) among martial artists. Materials and Methods: A total of 286 athletes (191 males & 95 females; Mean±SD age: 20.98±3.30 years) from different disciplines of martial arts (taekwondo, karate, Judo, & wushu) engaged in league championship participated in the study. Athletes completed the Sports Mental Toughness Questionnaire (SMTQ), the Positive and Negative Affect Schedule (PANAS), the Self-Compassion Scale (SCS), and the Cognitive Emotion Regulation Questionnaire (CERQ). The proposed model was evaluated using structural equation modeling. Results: The obtained results revealed that resilience has direct and indirect effects on emotional reactions to failure. Furthermore, self-compassion and maladaptive ER play a partial negative mediating role between resilience and emotional reactions to failure. However, the mediating role of adaptive ER was not significant. Conclusion: The study data predicted negative emotional reactions to failure based on resilience, mediated by self-compassion and ER among martial artists; thus, these data indicate the necessity of paying attention to the development of resilience in martial artists. This method emphasizes self-compassion and the reduction of maladaptive ER for better recovery of failure and reduces its effects.

Purpose: The present study was done to specify the impacts of a protocol called “living high, training low and high (LHTLH)”on serum ET-1 and EPO levels as well as the 3000-m performance of endurance runners in Iran’s national team. Method: eight male runners (aged24.4±3.1, height of 180.5±4.2, weight of66.7±3.4 and BMI of20.1±5.0kg/m2) who cooperated voluntarily with regard to middle distance and marathon running (R2M system training) at high and low altitudes. All case studies did 3000-m test and blood samples were taken at a time period of 24-hours before and after the test. The intended tasks consisted of continuous, interval, aerobic and resistance exercises. The runners were to take part in 16 training sessions each week. It should be noted that the training lasted for 11 weeks according to (LHTLH) protocol. Variance with repeated measures (P≤0.05) was utilized as the method to analyze the collected data. Results: It was shown that 3000-m time underwent significant decrease with regard to the time of impact both before and after the training. However, there were not significant changes in EPO (P≥0.05). On the contrary the amount of ET-1 demonstrated significant increase (P≤0.05). Conclusions: The results indicated that 3000-m time at lower altitudes will decrease on account of certain training programs. The reason is not directly related to the level of EPO. It is through hematological and metabolic changes as well as increase of ET-1 levels that performance under hypoxic and normoxic states happens to improve in the real sense.