درخت حوزه‌های تخصصی

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.

The purpose of this study was to investigate relationship between coaching leadership behaviors and burnout (physical and emotional exhaustion, feeling of progression and feeling of unworthy) in male athletes. This was an applied and descriptive study. The statistical population of this research was all male athletes in age range of 18-23 (young). A total of 196 athletes were selected by simple random sampling. The instrument of study included two questionnaires: Raedeke & Smith (2001) Athletes 'Burnout Questionnaire and Chelladurai (1998) Coaching Leadership Report. Their internal consistency with Cronbach's alpha for athletes' burnout questionnaire was 0.765 and leadership behaviors of coaches 0.784. Pearson correlation coefficient and regression analysis and SPSS-22 software were used to investigate the hypotheses. A linear model (structural equation) was used to present the model. According to findings of research, coaches are more likely to use behavioral training and less than arbitrary behavior. There was a significant relationship between behavioral training behavior and all scales (physical exhaustion, feelings of depreciation and reduction of progress), between the authoritarian behavior and physical-emotional exhaustion scales, and feeling of progression reduction in scorpion between democratic behavior and a significant positive correlation scale of progress reduction feeling and bu.

Purpose: Low back pain is one of the most common health problems of the world. Very different causes can cause back pain. Approximately 85% of people who are examined for low back pain the cause is not specific. The purpose of this study is to investigate the effects of the knee abnormalities on pain intensity and functional fitness in middle aged men with the chronic nonspecific low back pain. Method: The statistical community of this study includes 30 people of patient’s male with nonspecific chronic low back pain in the age range of 30-50 years with one of the abnormalities of genu varum or genu valgum. Results: The research findings were analyzed using descriptive and inferential statistical methods (dependent t and independent t tests). The research findings indicate that both the pain and disability of the experimental groups have significantly decreased after applying selected of corrective programs (Stretching muscles and short elements and strengthening weakened muscles). Sitting frog, walking with the inner edges of the legs, pressure to enter the wall with the outer edges of the legs to modify the genu varum. passing legs from one side to another in the form of scissors in liner mode, passing the medicine ball to the wall with the inside of the legs, walking with the outer edges of the legs to modify the genu valgum (p<0.05). While the two variables in the control group did not differ significantly (p>0.05). Conclusions: According to the results and considering the conditions prevailing on the research samples, it can be concluded that knee abnormalities (genu varum and genu valgum) affected by pain intensity and functional fitness efficacy in nonspecific chronic low back pain patients and Corrective exercises of these abnormalities has had a significant effect on reduce pain and disability index.