درخت حوزه‌های تخصصی

Today, competition to improve the quality of services is recognized as a critical strategic issue for sports venues. The purpose of this study is to determine the impact of service quality on improving loyal behaviors. (A case study of customers of wrestling sports complexes in Kermanshah province). The research method was descriptive-correlational and was conducted in the field. The study's statistical population was the customers of wrestling halls in Kermanshah province. In this study, 450 people were considered as the statistical sample of the study by random cluster sampling. Bonajsui's (2012) Research Work Questionnaire was used to measure research variables. Univariate and multivariate regression and the Friedman test were used to analyze the data. The regression test results showed that the service quality variable has a predictive power of about 18% of the variance of communication quality. Furthermore, the results showed that the variables of personnel responsiveness, reliability, and trust in personnel could be significant predictors of the communication quality component. Also, the results showed that the variable of communication quality could be a significant predictor for the components of loyal behavior, word of mouth, purchasing desire, and dissatisfaction. The study's results showed that the quality of services affects the quality of communication. According to the results, the responsiveness of the complex staff, reliability, and trust in the personnel have a positive effect on the quality. At the same time, no relationship was found between the tangibles and empathy components with the relationship's quality. According to the results, improving the quality of services in sports complexes and the quality of customer relations are the main factors in the occurrence of loyal customer behaviors and their reappearance in the future.

This study aimed to identify and analyze the factors affecting the athletic commitment to train and compete in the armed forces. The research method was applied, and the study's statistical population consisted of athletes affiliated with the Armed Forces across the country, of whom 290 were selected as the sample. For data collection, in the beginning, the qualitative method and interview with elites were used, then the quantitative method containing a demographic questionnaire and sport commitment questionnaire (researcher-made) with 33 questions is used. The questionnaire comprises six dimensions: facilities, incentives, rules and regulations, financial and personal factors, and enjoyment and satisfaction. Collected data through equation modeling were analyzed using Amos 21 software and SPSS 22 software to identify the factors affecting the variables. The results showed that the research model had a good fit, and a positive and significant relationship existed between facilities and incentives, incentives, rules and regulations, finances, personal factors, and enjoyment and satisfaction with sport commitment. Finally, it is recommended that the physical education managers of the armed forces take advantage of all the national facilities to increase their athlete's athletic commitment.

The main purpose of the present study was to determine the factors affecting the establishment of sports knowledge-based companies based on electronic knowledge. To pursue this aim, Glaser's grounded theory was used as the qualitative research method. 16 in-depth and semi-structured interviews were conducted with academic and industry experts in the field of sports using purposeful and snowball sampling methods. Data analysis was performed in three stages: open coding, axial coding, and selective coding, and the preliminary list of factors was identified through initial library studies. The 105 values affecting the development of sports knowledge-based companies based on electronic knowledge were extracted through the open coding process. The final pattern was created using the results of axial coding, which revealed the identification of 12 subcategories, falling into two main categories: intra-organization (human resources, management, marketing, legal, and financial factors) and extra-organization (educational/creativity and innovation factors, economic, cultural-social, infrastructure, legal, policy-making, and support/protection). According to the findings of the study, the professional and comprehensive view of managers and scientific and executive officials on these mentioned factors can change the ecosystem of sports entrepreneurship in Iran, providing the necessary context and infrastructure, as well as the sports community's interest in entrepreneurship and the formation of knowledge-based companies. This is, of course, accompanied by long-term job opportunities for activists in this sector as well as the development of new and inventive ideas, goods, and services.

Purpose: Skin is the most important organ of the body and maintains its integrity is critical in good health. Severe skin damage is life-threatening and repairing restores its tissue integrity and delay in it endangers health. According to the importance of wound healing and the fact that not treated wounds may decrease quality of life, many studies have investigated the effect of some natural and chemical substance on the length and quality of wound healing to find out beneficial interventions that rapidly and economically treat it. This review aimed to describe the physiology of cutaneous wound healing and some negative and positive factor with a focus on exercise. Methods: An electronic search without any time limitation was performed on the PubMed, Google scholar and web of science databases to find published articles in English. The keywords were wound healing, exercise, and physiology. According to relation to subject, similarities, and differences 48 articles were selected and reviewed. Results: wound healing is a complicated physiology process that consists of four consecutive overlapping stages. Disruption in each stage disturbs wound healing. Many chemical and herbal compounds are used to speed up wound recovery due to their anti-inflammatory property. Exercise is one of the effective factors in wound healing and many studies evaluated effect of different protocol of exercise on it. The results of studies show that aerobic exercise due to its anti-inflammatory and antioxidative effect is a beneficial method in shortening the length of wound healing, especially in aged, fat, and diabetic individuals. Conclusion: Moderate intensity aerobic exercise as a complementary medicine is a good intervention in the treatment of impaired and chronic wounds.

Purpose: It has been well proven that type 2 diabetes is one of the most common non-communicable diseases leading to many complications and mortality every year. The aim of this study was to investigate the effect of resistance training on FTO and PPAR-y gene expression in muscle tissue of obese diabetic rats. Study design: This experimental study was performed on 12 male Wistar rats (10 weeks old and 220±20 g bodyweight). Methods: Animals received 6 weeks high-fat diet and then in order to induce type 2 diabetes an intraperitoneal injection of a single dose of 30 mg/kg freshly prepared streptozotocin (STZ) (Sigma, USA) solved in citrate buffer (pH 4.5) was performed. Diabetic rats were divided into two (Resistance and control) groups randomly. The resistance program included 6 weeks, 5 sessions per week. The muscle expression of FTO and PPAR-γ was measured using the real-time PCR method. Independent t-test and Analysis of covariance (ANCOVA) were applied to compare the means. Results: The muscle mRNA expression of PPAR-γ and body weight significantly increased after 6 weeks of resistance training (p=0.031, p=0.037; respectively) but there was no significant change in the muscle mRNA expression of FTO (p=0.317). Also, blood glucose significantly decreased in the training group compared to the control group (p=0.01). Conclusion: According to the results of this study, it can be noted that 6-week resistance training by decreasing glucose levels and increases insulin sensitivity, and the muscle expression of PPAR-γ plays a prominent role in the control and treatment of type 2 diabetes in obese patients.

Background and objective: this study was conducted with the aim of investigating the relationship between cardiovascular risk factors and physical activity of retired male teachers of Samen city. Materials and methods: The statistical population of this study included the retired male teachers of Samen city. From the statistical population Using random sampling method, 55 retired teachers were selected as sample. The physical activity level of the subjects was done through the Beck questionnaire. The research measurements included determining body weight, height, body mass index, and determining some risk factors for coronary heart disease, total cholesterol, triglyceride (TG), low-density lipoprotein (LDL), high-density lipoprotein (HDL), and fasting blood glucose (FBG). For data analysis, appropriate descriptive and inferential statistics methods including Kolmogorov Smirnov test and Pearson correlation were used at a significance level of 0.05. Result: After examination, the results of this study showed that there was a negative and significant correlation between the level of physical activity with FBG, TC, LDL and a positive and significant correlation with HDL. While, there was no significant relationship between physical activity level and triglyceride level. Conclusion: Considering the unfavorable situation of cardiovascular risk factors in elderly men, and considering the positive effect of physical activity and exercise in reducing these factors, it is necessary to take measures to emphasize regular exercise programs and improve their health.

Purpose: Osteoporosis usually starts at a young age and progresses slowly over time. Therefore timely diagnosis of this disease plays an effective role in raising the level of health and public health in the society. The aim of this study was to investigate the relationship between some indicators of osteoporosis and bone mineral density of the pelvis in active elderly men. Methods: This study was semi-experimental. 25 active elderly men with the age range of 60 to 85 years were selected as available and with medical records. Anthropometric characteristics and serum indices of subjects were used as effective indices of osteoporosis. Pearson's correlation coefficient was used to find the relationship between bone mineral density of the pelvis and effector indices, data analysis was done using SPSS version 26 software. Results: The results of this research showed that in the active elderly men, there is a significant relationship between age (P=0.044), body mass index (BMI) (P=0.021), serum calcium (P=0.037) and phosphorus levels (P=0.046) and alkaline phosphatase (P=0.016), with bone mineral density (BMD) of the pelvis. No significant relationship was found between vitamin D with BMD of the pelvis (P=0.055). Conclusion: In general, the results show that there is a significant relationship between bone density and body mass index, calcium and serum alkaline phosphatase indices in active elderly men. Therefore, it is possible to use the serum levels of these indicators in predicting this disease, and exercise may also be one of the influencing factors, so the effect of exercise on other bone density indicators can be investigated.