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The purpose of this study was to investigate the relationship between narcissism and coping strategies with competitive stress in elite athletes. This research was a descriptive-correlation research method (structural equation modeling). In terms of purpose, the present study was an applied type of research and, in terms of time, was a kind of future research. The statistical population of this study was all elite male and female athletes of East Azarbaijan province in two age groups of youth and adults from team who participated in the championship of 2019. According to the Cochran formula 270 athletes were selected as a sample size. To collect demographic information and measure variables, Individual information form, narcissism and coping strategies in sports competition questionnaires were used. Kolmogorov-Smirnov test (KS) was used to verify the natural distribution of data, Cronbach's alpha coefficient to calculate the internal consistency of instrument, Pearson correlation coefficient to determine the correlation between variables, Confirmatory factor analysis (CFA) was used to study the structural equation modeling and (SEM) models to test the fitting of the base model with the data and to determine the structural relationships between the variables at 95 confidence level, using SPSS22 and Liserl software version 8.53. The results showed that pride had with the greatest impact and the most important role on thought control strategy, imagery, logical analysis, search support, evacuation of unpleasant emotions, distraction of mind and surrender/withdrawal. To be Right had the greatest impact and the most important role on relaxation strategy, efforts to deal with competitive stress in elite athletes.

Background: Adropin is a newly identified bioactive protein that is important in energy hemostasis and vascular endothelial function. Aim : The purpose of the present study was to investigate plasma levels of adropin and nitrite/nitrate (NO), in elderly treated hypertensive subjects at baseline and follow-up after 6 weeks of high-intensity interval training (HIIT). Material and Methods: Forty-four elderly participants with treated hypertensives (age 61.09±5.82 years, 25 male and 19 female, BMI= 25.7±1.31 kg/m 2 ) were randomly assigned to either the high-intensity interval training (HIIT) or control group. The HIIT group received an intervention consisting of 10 intervals of 1.5 min at 85% to 90% of their heart rate reserve (HRR), separated by 2 min of rest at 50% to 55% of their HRR, in three sessions per week for a duration of six weeks. Plasma levels of adropin and NO were measured using enzyme-linked immunosorbent assay. The statistical analysis was performed by two-way repeated ANOVA to determine differences between groups and Pearson’s correlation coefficient to determine correlation. Results: The results showed that, following the six-week HIIT intervention, the plasma levels of adropin and NO significantly increased when compared to both control group ( P = 0.0016) and the baseline ( P = 0.0003) measurements. Peak oxygen consumption was increased after exercise training compared to the control group ( P =0.005). Δ adropin in the HIIT group showed a positive correlation with increased Δ NO (r= 0.707, P = 0.002) and Δ VO 2 peak (r= 0.836, P = 0.001), and a negative correlation with Δ DBP (r= 0.643, P = 0.025) and Δ SBP (r= 0.691, P = 0.013). Conclusions: The study findings suggests that HIIT can enhance both blood pressure and cardiorespiratory fitness. The observed increase in plasma level of adropin may have contributed to reduction of blood pressure by promoting nitric oxide production.

This research paper presented a comprehensive analysis of the literature on winter sports tourism, tracing its development over a span of 56 years. It was reviewed with bibliometric techniques with VOSviewer software. The extensive bibliometric analysis revealed emerging trends, notable research contributions, and key participants in the field. Prominent countries in this niche are Australia and Canada, while the Universities of Innsbruck and Waterloo, journals such as Sustainability Journal (Switzerland), and authors such as Falk and Muller, Peters, Scottwere have shown significant focus in this area. Therefore, the study highlights the increasing importance of this niche tourism sector, reflecting a surge of interest in recent years as indicated by the rising number of relevant research papers. The review also underscored how vital bibliographic studies are to comprehending the landscape of winter sports tourism. The findings provided trends, patterns, and a roadmap for prospective researchers, flagging the necessity of keeping pace with the evolving realities of winter sports tourism and establishing a valuable foundation for understanding and examining current trends and future developments in winter sports tourism. That will undoubtedly prove useful for both researchers and decision-makers in the field of winter sports tourism.