امین عظیم خانی

Background: Regular exercise has been shown to have a positive impact on both physical and mental health. There is growing evidence to suggest that exercise can improve mood, reduce symptoms of anxiety and depression, and increase overall well-being. Aim: This study aimed to investigate the role of ethical values and coaching styles in adherence to sports in group and individual athletes. Materials and Methods: The statistical population of the present study included 350 athletes in group and individual disciplines in Mashhad, 296 of them were randomly selected as a statistical sample. Descriptive and inferential statistics were used for statistical analysis in the present study, which was done using SPSS 23 (Chicago) and LISREL 8.80 software. Results: The results of the Kolmogorov-Smirnov test showed that the research data have a normal distribution. The analysis results showed a significant relationship between coaching style and its components with adherence to sport and between ethical values and its components with adherence to the sport. Also, the regression analysis results showed that ethical values and their components and coaching styles and their components have the ability to predict adherence to the sport. Conclusion: Finally, it was found that the structural equation model of the relationship between ethical values and adherence to sport and coaching styles and adherence to the sport has a significant fit. According to the results of the research, it can be said that coaches and those involved in sports can, by properly explaining and presenting ethical values, as well as the correct use and application of coaching styles, encourage people in the community at all levels and especially athletes to adhere to physical activity and exercise.

The aim of this study was to investigate the factors affecting social loafing in sports leisure time of university students in Mashhad (Firdausi Mashhad and Imam Reza). The research method was descriptive-survey in terms of propose and field based in terms of the data collection. The statistical population consisted of male student-athletes of Mashhad universities from which 118 were randomly selected as statistical samples. The research instrument included a researcher-made questionnaire based on research background, the validity of which was assessed by six professors in the field of sports science and its reliability was also assessed by Cronbach's alpha test (0.84). Based on the results, the items of socio-sports loafing for students constitute 50.20% of the total variance and the model for assessing the causes of socio-sports loafing of students, based on the results of factor analysis, has appropriate validity. Moreover, there is a significant correlation between the causes of socio-sports loafing (dodgery, felling of self-inferiority, group characteristics and egocentricity) in students (P <0.01). Furthermore, the results of all factors are higher than the average. Considering the relative importance for each of the studied factors among athlete student, it seems that one of the important reasons for such a fact is the change in lifestyle and the tendency of people to use modern technologies, which reduces the activity of people in society, especially young people, young athletes and young students. Many of these people, due to their strong presence in virtual activities, are less inclined to do group work and are more likely to perform individual actions and achieve their personal goals.

Background : Chronic low back pain (LBP) is one of the most frequent causes of disability in women. Aim: The main purpose of the current study was to compare the effects of yoga, TRX, and exercise-related combination programs on pain and lordosis in women with increased lordosis and LBP. Materials and Methods: In this study, 40 women based on the study's criteria were included in the pre-intervention assessments and randomly divided into three experimental groups (yoga, TRX, and exercise-related combination programs) and control group. At this stage, the lordosis angle of participants was measured using a flexible ruler, and their pain was also measured via the Oswestry Disability Index. Furthermore, the experimental groups performed selected exercises for 60 min/session for three sessions/week for six weeks. Results : Our results demonstrated that there was a statistically significant difference between the yoga, TRX, and exercise-related combination programs in lumbar lordosis ( P = 0.003) and pain levels in women with LBP ( P = 0.007). Also, lumbar lordotic angle showed a significant reduction only in the combined groups subsequent to the period ( P = 0.003). Conclusion : In conclusion, the current findings illustrated that exercise-related combination program than other modalities could be used as an exercise-related treatment method to ameliorate lordosis angle and pain in women with LBP.