مطالب

Several metabolic changes caused by regular exercise, can lead to adaptive mechanisms in athletes. These changes create a new dynamic balance that ensures better performance. On the other hand, because most studies on changes in the metabolic profile of the blood have been conducted in male athletes, this study investigated the effects of different exercise conditions on reactive oxygen species (ROS), adiponectin, and subjective mood in female athletes. A cohort of 30 females, 20 professional players (10 target shooters and 10 basketball players), and 10 sedentary females as control group were enrolled in the study. Capillary blood samples and the Brunel Mood Scale questionnaire (BRUMS) were collected at noon before the training session. ROS and adiponectin were determined by the ELISA method. To compare among groups, one-way analysis of variance and Tukey's post hoc test were used at the significance level of P<0.05. Physiological evaluations showed a significant high level of adiponectin in basketball players (p=0.005). The anger subscale in the basketball group had a significant increase compared to other groups (p=0.04). The tension subscale exhibited a higher level in the shooting group than in the control group. (p=0.017). Regarding the vigor subscale, there was no significant difference in experimental groups, and there was a significant difference in the non-athlete group (control) (p=0.001). Basketball, being a team sport, exhibits a greater degree of aggression in contrast to shooting, which is classified as an individual sport. More focus of coaches on adjusting in another sport with non-competitive and non-confrontational features to reduce anger is suggested.

Social trust is considered as an important type of social capital and in fact an informal institution in any country. The purpose of the present study is to evaluate the impacts of social trust and managers' over self-confidence on the investment efficiency. The general method used in this study had been an applied one in terms of purpose and a correlational and fundamental experimental method type in nature. To achieve this purpose, financial information of 130 companies in the years 2012 to 2021 has been extracted and analysed as the research statistical sample. A linear regression method has been used to test the hypotheses. The research findings showed that social trust has positive, significant positive and negative impacts on the investment efficiency, over-investment and under-investment, respectively. In addition, managers' over self-confidence has positive, significant positive and negative impacts on the investment efficiency, over-investment and under-investment, respectively.

Background and Theoretical Foundations: The transformation of the Iranian Navy from a purely defensive force to a strategic force has highlighted it as an influential component in Iran's future position. The presence of this force in international waters, the need for greater interaction with trans-regional countries and the impact of the new mission environment, monitoring and identifying the various trends governing the emerging global patterns, to understand the possible futures ahead and more importantly, build It makes a desirable future necessary. Research method: The current research aims to explain the strategic model and the consequences of the presence of the strategic navy of the army in international waters and Makran coasts. The qualitative research approach was implemented with the grounded theory strategy. For this purpose, after reviewing the specialized texts related to the research subject, semi-structured interviews with 12 experts in the sea domain until data saturation were conducted using targeted sampling. Findings and Results: The findings of the research, which was conducted through international and axial coding, show that the data consists of 65 open codes, 59 axial codes, 10 categories, and finally, by using them, 11 contextual factors (training of expert staff, development Commercial, fishing and military fleets, succession of commanders, port services and wharf construction, equipped with modern equipment - smart, radio and satellite facilities (and 4 intervening factors) comprehensive support of sovereignty, convergence with countries, educational and sanitary environment suitable, supply of parts and special equipment, rights and benefits and welfare affairs), as well as 15 strategic factors (observance of international policies, diplomatic influence, international credibility, formulation of force missions, knowledge of international law, increasing geopolitical and strategic depth, knowledge of the environment and space, increasing the weight of geopolitics and... (9 causal factors) professional development of employees, use of elite talent, holding short-term and future research courses, paying attention to the health of employees and... (and 20 consequences) establishing security, deterrence, Sea-based economy and...)was developed.