سیدجعفر موسوی

Both low vitamin D status and systemic inflammation are associated with reduced sleep quality and can be affected by exercise. The aim of this study was to investigate the effect of high-intensity resistance training (HIIT) and vitamin D intake on sleep quality and high sensitive C reactive protein (hs-CRP) in inactive young women with vitamin D deficiency

This semi-experimental study was conducted on 52 overweight women with low vitamin D status. Subjects were first selected by available sampling method and then randomly selected and placed in four groups: control, exercise, vitamin D and combined. HIIT was performed in three sets and 6 repetitions with an intensity of 80% one maximum repetition with a 20-second rest, which was carried out by lifting the same weight and another 20-second rest, until reaching exhaustion. Vitamin D was taken weekly with a dose of 50,000 units. Pittsburgh questionnaire was used to measure sleep quality.

The results showed that hs-CRP levels and sleep quality scores decreased after 8 weeks of  HIIT and vitamin D consumption and combined intervention, and the combined intervention was associated with a greater effect in reducing these variables compared to the other two interventions (P<0.05).

It seems that HIIT and consuming vitamin D can help to improve the quality of sleep in the state of vitamin D deficiency with excess weight by adjusting the levels of hs-CRP, and the combined intervention is associated with more effects.

 Given the importance of deeply understanding the complex phenomenon of narcissism in sports managers for their success and effectiveness, the main issue of this qualitative research is identifying the dimensions, components, and characteristics of narcissism in senior, middle, and operational managers of professional sports clubs and organizations responsible for championship sports in Iran. The aim is to design a comprehensive model of narcissism in sports managers, providing a new theoretical and practical framework for understanding and managing this phenomenon.

 The research method is grounded theory. This study was conducted from March 2023 to August 2023. Participants were selected using the snowball sampling method among professors, researchers, psychologists, consultants, and experienced and successful managers in professional sports clubs and organizations responsible for championship sports across Iran to ensure diversity and richness of data. Data were collected using library studies and in-depth semi-structured interviews with 15 individuals. Lincoln and Guba's (1985) evaluation criteria were used to examine the quality and validate the qualitative results. ،The intra-subject agreement method between two coders was used to calculate the reliability of the interviews, resulting in a reliability coefficient of 91%.

 The findings revealed that the narcissism model of sports managers includes positive aspects (leadership and inspirational ability, high self-confidence, motivation and ambition, creativity and innovation) and negative aspects (grandiosity and excessive pride, self-centeredness and disregard for others, intolerance of criticism, dominance, and control, lack of empathy and understanding of others, refusal to accept failure and mistakes).

 To leverage the benefits of positive narcissism and prevent its negative consequences, it is essential to provide training in interpersonal skills, emotional management, balanced manager selection, and appropriate supervision. Establishing feedback systems and encouraging collaboration can reduce adverse effects and enhance positive aspects.

The primary objective of this study is to establish a comprehensive model for the personal branding of professional athletes on Instagram, encompassing its impact on sports migration. To this end, a mixed-method research approach was adopted, wherein the qualitative section incorporated insights gleaned from library experts and semi-structured interviews with 15 experts. Following this, a Delphi screening technique was utilized, resulting in the identification of 4 significant factors and a total of 52 indicators. Upon completion, a 52-item questionnaire was formulated. The statistical population of this study includes professional athletes who are active users of Instagram. In order to determine the sample size for each factor (ranging from 10 samples), 520 individuals were selected. SmartPLS2 software was employed to model the structural equations and further analyze the collected data. Through the process of confirmatory factor analysis, four key factors emerged: 1) performance, comprised of 7 indicators; 2) personal, consisting of 12 indicators; 3) social, encompassing 13 indicators; and 4) ethical, with 8 indicators. Altogether, 40 distinct indicators were identified. The computed internal reliability, item reliability, convergent and divergent validity, and significance coefficients of the paths, as well as the R2 of the model, all demonstrated a high degree of suitability for further analysis. Moreover, the Goodness of Fit (GOF) was determined to be 0.48, falling within the ideal range. The analysis revealed a significant influence of athletes' personal brand on sports migration, with social factors (impact: 0.185) and personal factors (impact: 0.384) exerting a notable effect at the p < 0.01 level, while functional and moral factors showed no significant influence. Moreover, the R2 value indicated that the 4 factors of athletes' personal brand accounted for approximately 48% of the causes of sports migration.

The purpose of this study is to identify and analyze the privatization of sports venues and spaces of Tehran Municipality Sports Organization using futures research. The type of research is applied and analytical-exploratory in nature. The statistical population consisted of two parts: executive and theoretical. In the executive part, the managers of Tehran Municipality sports complexes as well as the managers of Tehran Municipality Sports Organization are included. In the theoretical section, sports management professors specializing in sports, privatization and sports economics, in which at least two studies in the form of writing and translating books, published research papers, lectures presented at domestic conferences and Foreign, have done a research project. Using standard purposeful sampling and reaching theoretical saturation, interviews were conducted with 22 people. Then, 14 people from the statistical community of the previous section announced their readiness to perform cross-sectional analysis. To analyze the data, a combination of panel experts and Mikomak cross-effects were used. Findings showed that the most important drivers of privatization of sports facilities in Tehran Municipality Sports Organization, in order of effectiveness, are: more facilities for the contractor, reviewing and creating a framework of rules and regulations for privatization, creating incentives and outsourcing. Sports managers of Tehran Municipality are recommended to use the drivers identified in this study in order to attract contractors, private and public organizations.

The issue of granting privileges to respected martyrs is one of the issues whose origins are less investigated and neglected from the point of view of jurisprudence and law; Therefore, following the central question of this issue, what are the principles of granting material and spiritual privilege to martyrs, its principles were investigated and analyzed with a descriptive-analytical method and by examining jurisprudential and legal findings. Therefore, in the fields of Quranic reasons, jurisprudence rules and legal rules, its basics were introduced. The results of these investigations include the need to pay attention to the Mujahideen, the rule of al-Kharaj Balzaman, Al-Ghanam Balgarham, the connection between the understanding of property and objects, along with the issue of the government's responsibility based on the benefit caused by the risk, and citing the necessity of non-cruelty, as well as the transnational and common theory of using veterans and honoring them can be considered as the most important theoretical foundations of granting Privileges should be introduced to the honorable martyrs. In terms of the innovation of this research, it can be stated with others that no research has been reviewed that has introduced the theoretical basis of giving privileges to martyrs in a general and comprehensive manner. And therefore, the current research in the investigations has resulted in crediting the rights of precious martyrs.

The purpose of this study was to present a model of privatization of sports facilities of Tehran Municipality.

The research method was qualitative using a systematic design of data-based theory and semi-structured interviews were used to collect information. Then, data analysis was performed by Strauss and Corbin method and a paradigm model. The statistical population of the study included managers, executives, professors and experts of sports venues and sports spaces of Tehran Municipality Sports Organization who had the necessary expertise in the field of research, including privatization of sports venues, investment and marketing, 15 people were interviewed. And obtaining the necessary information in relation to the subject under study was selected in a completely non-probabilistic manner using theoretical and targeted snowball techniques. Open, axial and selective coding were used to analyze the data.

158 basic conceptual propositions with 11 categories in the form of 6 dimensions of a paradigm model, including causal conditions (2 categories of place conditions and managerial conditions), main phenomenon (privatization of sports venues and spaces), strategy(2 categories of corrections and review and performance improvement), Underlying characteristics(2 categories of community conditions and individual conditions), intervening conditions(2 categories of deterrents and stimulus factors) and consequences(3 categories of change in the promotion of municipal affairs, change in the quantitative and qualitative level of places and change in service) were identified.

 The aim of this study was to investigate the relationship between organizational health with creativity and personnel productivity among staff workers of the General Administration of Sports and Youth of Sistan and Baluchestan Province.This descriptive- correlation, study is an applied one in terms of objective. The statistical population of the research included the staff workers of the General Administration of sports and Youth of Sistan and Baluchestan Province. Measuring organizational health of Hui et al, questionnaire,the creativity of Torrance employees Questionnaire and “Hersey and Goldsmiths’ Productivity Questionnaire” were used to collect data. The content validity of the questionnaires was approved by sport management experts panel and the reliability was determined by Cronbach's alpha . For analysis of the data after testing the normality of the data through the use of Kolmogorov-Smirnov test,the researcher applied single-groupt-test and Pearson’s correlation test.The results showed that there was a direct and significant relationship between the dimensions of organizational health with creativity and productivity of the staff workers.The results of the regression analysis showed that organizational health variable could predict 68% changes in creativity and 35% changes in productivity.The results also revealed that whole creativity and productivity among staff workers of the General Administration of Sports and Youth of Sistan and Baluchestan Province is in an undesirable level. It is concluded that managers strengthen organizational health by creating relationships and social interactions that result in a healthy work environment that leads to creativity and increased productivity

The theory of planned behavior includes important motivational variables that affect people's entrepreneurial intention, and these variables themselves are affected by other factors. Also, it seems that the effect of these two factors on these motivational variables is under the influence of the need for autonomy variable, and based on this, the present study was compiled. From the point of view of the objective, this research is applied and in terms of the method of data collection, it is considered to be a descriptive type of research that was implemented using the correlation-causal method. The data collection tool is a Likert-scale questionnaire that was distributed among the students of Khuzestan province using the Internet in a virtual and available method and in the form of a snowball, and 447 usable questionnaires were analyzed. The findings showed that entrepreneurial passion and perceived university support directly and indirectly through the motivational variables of the theory of planned behavior are effective on entrepreneurial intention. Also, the moderating role of the need for autonomy variable in the effect of entrepreneurial passion and perceived university support on entrepreneurial intention was confirmed. At the end, regarding to the research statements, some suggestions were presented. Among the most important ones, universities and the teachers were advised to have continuing support of training and incentive research programs like courses, fellowships, conferences etc. to create and develop an ecosystem for entrepreneurship and lunching business ventures by students.

Investments and progress of mining projects depend on the quantity and quality of mineral resources and reserves; therefore, it is significant to know the reliability of the ore deposit estimation based on various methods. This research has investigated the role of geostatistics and artificial neural networks in modeling, estimating the concentration of exploration blocks, and estimating mining reserves. Spatial distribution modeling of iron values has been performed using three methods of ordinary kriging, Gaussian simulation, and artificial neural networks. To construct the block model of ore deposit, 29 exploratory boreholes with an average depth of 142.75 meters and a total length of 4139.9 meters were used. After drawing the variograms, the search ellipse was calculated, and a 3D model was obtained to estimate the concentration by ordinary kriging and Gaussian sequential simulation methods. Also, modeling and estimating the concentration was done by the artificial neural network method. Results showed that the artificial neural network technique has high validity. Also, due to its ease of use and no need for extra variographic calculations can be an appropriate alternative to geostatistical and simulation approaches. Finally, based on different cut-offs, the concentration-volume curve was drawn. The results show that this ore body has 439 million tons of ore with an average concentration of 42 % per 20% cut-off concentration.

The purpose of this study was to provide a model for recruiting and retaining human resources of medical sciences universities in Mazandaran province under the conditions of the epidemic of the disease of covid-19.

The current research was a mixed type of research. The statistical population of the qualitative section included 25 human resources experts from Mazandaran University of Medical Sciences, who were selected by a purposeful random method using a snowball sampling method. The statistical community of the quantitative department included 600 senior expert managers in the field of human resources at Mazandaran University of Medical Sciences, 148 of whom were selected as the statistical sample of the quantitative department from a random sampling. To collect information, a semi-structured interview tool and a questionnaire obtained from the interview were used.

According to the research results, 2 general dimensions of attracting and maintaining human resources were identified. Also, 11 components were identified, out of a total of 62 identified indicators, 17 indicators were assigned to recruitment and 45 indicators were assigned to human resources maintenance, and the value of the GOF index equal to 0.669 was obtained, which is suitable.

In general, it can be stated that the senior management of medical sciences universities must pay attention to the categories that are effective in maintaining human resources so as not to face a shortage of human resources.

As every other business, there are a variety of risks in the banking industry, including operational risks. The Central Bank of the Islamic Republic of Iran, as the Basel Committee, has required computing and managing the operational risk for banks and financial institutions. Accordingly, the goal of this study is to evaluate the operational risk management in banks based on the Basel II accord methodology. This study is of case study type. That is to achieve the research purpose, the Bank Hekmat Iranian (merged with Bank Sepah) was chosen as a young bank in Iran. Due to access to the bank's financial statements, no sampling was used and all audited statements of this bank over 2011 to 2016 were selected as the statistical population of the study. Then, the operational risk of this bank was calculated using two "Basic Indicator" and "Standardized" approaches based on the Basel II accord methodology. Also, the Central Bank of the Islamic Republic of Iran directive were used to identify different groups of bank activity in Standardized method. Descriptive statistics were used for data analysis. The results represent an ascending slope in operational risk in this bank over the research period. Due to the impact of the volume and the extent of banks' operations on the operating risk, this result could be due to an increase in the scope and volume of the operations in the bank during these years, which has directly affected the operational risk. This paper, while providing a relatively comprehensive and coherent literature about the operational risk, also provides details for calculating of this risk in banks. These details are based on the bank’s audited financial statements and can be used as a pattern to calculate operational risk in other banks.

According to evidence, sports activities and vitamin D, in addition to their role in developing physical health, have a considerable impact on cognitive, behavioral and mood disorders. In the present study, the effectiveness of core stabilization exercises and vitamin D consumption on quality of life (QL) and mental health (MH) of women with chronic low back pain was investigated.

This clinical trial study was performed on women with chronic low back pain. First, 48 patients were selected by available sampling method, then randomly divided into 4 groups: control, exercise, vitamin D and combined (exercise+vitamin D). Core stabilization exercises were performed by training and combined groups for 8 weeks, and vitamin D and combined groups took vitamin D (50,000 IU) weekly. SF-36 QL and general health (GHQ) questionnaires were used to collect data. Data analysis was performed using paired t-test and  one-way analysis of variance at a significance level of P< 0.05.

Vitamin D levels were lower than normal in all subjects. The QL and MH of women with low back pain improved after exercise, vitamin D intake, and combined intervention. The combined intervention was associated with a greater increase in QL compared to the other two therapeutic interventions and the development of MH compared to vitamin D intake.

It seems that therapies using core stabilization exercises, vitamin D intake or combination intervention can help people with low back pain and low levels of vitamin D in improving QL and MH.

The purpose of this study was to investigate the success factors of the Martial Arts Federation of the Islamic Republic of Iran.

The research was mixed and qualitative and quantitative. In the qualitative part, the statistical population includes 15 faculty members in the fields of sports management and economics and all people with experience in the management of combat teams and senior managers of the Martial Arts Federation in a non-random (judgmental) manner and by bullet method. It was snowing. The statistical population to answer the questionnaire of the present study was 100 athletes, The questionnaire had 7 components and 27 indicators.

In the component of coaches, the rent index of the game in the selection of coaches with 71% correlation, in the administrative component of the index of unfavorable training courses with 81% correlation, in the component of women index of training restrictions in the women's hall with 81% correlation, financial component of the index Economic problems of athletes and their lack of salaries and benefits with 87% correlation, in the component of athletes Index of non-commitment of the Sports Medicine Federation to support athletes after injury with 86% correlation, in the futures component of non-implementation of plans with championship revenue generation strategy Athletes with 90% correlation, in the information technology component, the information registration index of championship databases and provincial delegations in the database for easy access to information with 71% correlation had the highest correlation with the mentioned components.

 Today in the context of Covid 19 disease, completely changing conditions and governing organizations, increasing competition, and the need for its effectiveness in such conditions, reveals their need for a valuable generation of employees. Today, completely changing conditions and governing organizations, increasing competition, and the need for its effectiveness in such conditions, reveal their need for a valuable generation of employees. A generation that is referred to as organizational soldiers. Undoubtedly, these employees are the distinguishing feature of effective organizations. Financial and technological resources are not the only advantage of organizations, having talented and capable people can not only be considered a competitive advantage of the organization but can also compensate for the lack or disadvantage of other resources. In the current competitive situation and in an environment where continuous change and continuous innovation is its main feature, only organizations that understand the strategic role of human resources and have skilled, knowledge-based, competent, competent, elite human resources will succeed. And be capable. Organizations that can not design appropriate mechanisms and measures for the retention of their talents must inevitably watch their departure. Organizations always spend a lot of money to attract the best staff; so if they can not maintain these forces, they have wasted those costs. Dismissal of key employees can be considered detrimental to organizations in terms of replacement costs and disruptions. The intention to leave an employee affects both the organization and other employees; therefore, thinking is important to minimize the negative effects of leaving the service on the performance of the organization. Leaving the service is very costly, and given the recent recession, the importance of retaining key employees for the success of the organization has been emphasized. Due to the conditions of Covid-19, in Mazandaran University of Medical Sciences, which is an important system in the field of medical education, the need for human capital, especially doctors and paramedics, has intensified. In addition, the heterogeneous population pyramid of the organization in this university, which was due to the inability to maintain and train specialized human resources in previous years, has created a deep gap in this area and therefore the university decided to attract and retain human capital. To be able to intelligently choose the right way of working and the best ideas. The general indicators presented in previous studies are not appropriate or effective for universities and especially medical universities and the result is not satisfactory; therefore, the results of the present study, which is specifically conducted at Mazandaran University of Medical Sciences, can provide more accurate and appropriate guidance. Therefore, the researcher pursues this research to determine the factors affecting the absorption and retention of human resources of Mazandaran University of Medical Sciences with an emphasis on crisis management.

The present research is based on the purpose of applied research and based on the method of data collection in qualitative research and the terms of implementation method are descriptive-survey research. The statistical population of the study included 25 human resources experts of Mazandaran University of Medical Sciences who were selected by purposive random sampling method using a snowball sampling method. In the content analysis section, first, by conducting interviews with experts under the title of open-ended questions, the information required for content analysis was collected. Conducting interviews with experts After 25 experts, the comments were saturated and at this stage, the interview was completed. In the next step, content analysis, coding, and indexing were performed. In the second stage of content analysis, the indicators were assigned to the components, based on which the identified indicators were divided between several components. In the next stage of content analysis, the determining components were assigned to different dimensions. In the second part, the Delphi technique was used to confirm the identified indicators. In the next step, using the Delphi technique and CVR index, validation and elimination of insignificant indicators were performed. The Delphi technique was also examined in two stages. In the first stage of this section, a closed questionnaire consisting of identified indicators was scored using a 5-point Likert scale and distributed among experts and was performed in two stages of the Delphi technique. The results of content analysis and the Delphi technique are stated below.

According to the results of the study, two general dimensions of human resource absorption and retention were identified. Also, 11 components were identified, out of a total of 62 identified indicators, 17 indicators were allocated to absorption and 45 indicators to human resources retention.

The result is that 11 components of recruitment or talent search operations, volunteer forces, selection operations, distribution operations, social resource socialization operations, service compensation system, organizational support, quality of work-life, safety and health, guidance and counseling and leadership, In crisis conditions (prevalence of Covid disease 19) is effective in attracting and retaining human resources of Mazandaran University of Medical Sciences. In general, the main features of the model of attracting and retaining human resources in Mazandaran University of Medical Sciences are: Specific innovations of this model in comparison with other existing models in the field of attracting and retaining human resources in Mazandaran University of Medical Sciences; In this research, two dimensions of human resources absorption and retention were identified, which are considered as innovations in this research; and The possibility of establishing the recruitment and retention of human resources in Mazandaran University of Medical Sciences in terms of components identified for the recruitment and retention of human resources in Mazandaran University of Medical Sciences in this study can show the ability of this university in attracting and retaining human resources to confirm. Therefore, it is suggested to prepare documents from the system of attracting and retaining human resources in times of crisis so that they can be used in the future and subsequent crises. Also, conferences and seminars on human resource management in times of crisis should be held at the University of Medical Sciences.

Entrepreneurships is one of the main drivers of the economy, which is affected both by individuals’ characteristics and the surrounding environment. Accumulating of the two factors results in a situation in which leads people to develop their creative ideas and entrepreneurship intention. On this basis, the purpose of the study is to identify and explain the impact of entrepreneurial ecosystem on entrepreneurial intention with the mediating role of entrepreneurial self-efficacy, alertness and passion. This research is an applied one from the audience dimension, descriptive from purpose dimension and cross sectional in terms of time. Its method from data collection dimension ,is correlational-causal research. The statistical population of the study was graduate students, job seekers, educated soldiers and better job seekers in Ahvaz city, in which a total of 413 people were considered as a sample. The data were collected based on a questionnaire by random sampling. Structural equation modeling using partial least squares method in Smart PLS software version 3.3.3 was used to analyze the data. Findings show that the entrepreneurial ecosystem has a significant positive effect on entrepreneurial self-efficacy, alertness and passion and the three contracts have significant positive effect on entrepreneurial intention. Moreover, the mediation role of entrepreneurial passion and alertness in the relationship between ecosystem and entrepreneurial self-efficacy was confirmed. Finally, entrepreneurial self-efficacy has a significant mediating role in the relationships among entrepreneurial passion and alertness with entrepreneurial intention.

The purpose of this study is to present the model of fan development in the Iranian Football Premier League. The research method is qualitative-quantitative mixed with exploratory approach. The statistical population included experts in the qualitative section and spectators in the Premier League stadiums in the quantitative section in the (98-99) season. The statistical sample in the qualitative section included 15 experts, professors, faculty members of sports management, coaches, referees, federation officials and people familiar with football, and 400 people in the quantitative section formed the statistical sample by available methods. The data collection tool in the qualitative part was a semi-structured interview with experts which was continued by snowball method until theoretical saturation and the results of this interview were used in the form of a questionnaire with 13 main factors in the quantitative part. In this study, for content validity from the point of view of experts and structural validity, to determine the reliability of the model from the two indicators of hybrid reliability and Cronbach's alpha and from the indicators of divergent and convergent narrative (Ave) and modeling of structural equations SPSS software version 23 and PSL2 were used. The GOF = 0.65 fitness index was reported and the final model research resulted in 13 factors of public relations, location and facilities, distribution channels, product, quality and process, law enforcement, pricing, incentives, market power, planning. Recruitment, fan management, staff and fan interaction, and promotion were approved. It is necessary to invest and pay attention to these areas.

The purpose of this study was to design a model of positivity in the organizational behavior of employees of sports organizations. The method of this research was combined and its design was of harmonization and exploratory type. In the qualitative part of this research, the data theory method of the Strauss-Corbin approach was used and in the quantitative part, the structural equation model method was used. The statistical population in the qualitative section were experts and informants of sports organizations. In this section, sampling was performed by the method of maximum diversity and the total number of participants was 15. The statistical population of this study in the quantitative part of all employees of sports and youth departments in the south and southeast of the country was 638 people. The number of sample sizes in this study was estimated based on the number of parameters identified in the qualitative part of the research (5 samples were considered for each parameter identified). As a result, the sample size was 459 people who were selected by stratified random sampling method. Also, in the qualitative part, a semi-structured interview was used to collect data and in the quantitative part, a questionnaire was used. In order to evaluate the quality and validation of qualitative results in the present study, Lincoln and GABA (1985) evaluation criteria including validity, transferability, reliability and validity criteria were used. Divergent validity and Cronbach's alpha and combined reliability were used.

The present study aimed to identify Factors On talent management in the Ministry of Sports and Youth of the Islamic Republic of Iran Done. The research method was mixed (qualitative-quantitative), in the qualitative part the qualitative content analysis method was used with inductive approach and in the quantitative part the descriptive-survey method was used. Participants in the qualitative section were sports management experts and specialists, and the statistical population in the quantitative section included the staff of the Ministry of Sports and Youth. Sampling method in Qualitative Part Targeted in terms of theoretical type, it was used with 15 people and in the quantitative part, it was simple random that 287 people were selected as a statistical sample for the study. The data collection tool was semi-structured in the qualitative part of the interview and a researcher-made questionnaire in the quantitative part. The validity and reliability of research data collection tools were confirmed; data analysis was performed through heuristic factor analysis in SPSS20 software. The results showed that the factors affecting talent management include conceptual, strategic, cultural, discovery and absorption, evaluation, training and development, retention, structural, political, information and communication, functional factors.

With the epidemic of the Covid-19 virus and the increasing development of information and communication technology, an opportunity has emerged for medical and therapeutic service providers to develop telemedicine services. In the current research, the authors tried to explain people's turn to this technology by expanding the Unified Theory of Use and Acceptance of Technology 2 (UTAUT2) and adding the features of telemedicine services.

The current research is applied from the point of view of the objective, and in terms of data collection, it is considered to be descriptive research, which is carried out by the correlation-causal method. The data collection tool is a standard questionnaire with a Likert scale, distributed by random sampling among the population with a history of using telemedicine services in Ahvaz city. Finally, 407 usable questionnaires were analyzed using SPSS and Smart PLS.

The results show that performance expectancy, effort expectancy, facilitating conditions, hedonic motivation, perceived product advantage, and perceived security have a significant and positive effect on the intention to use telemedicine. Also, the moderating role of innovativeness and gender was confirmed.

UTAUT2 and some characteristics of telemedicine services can well explain the intention to use this technology in the context of Covid-19. Also, considering the moderating role of personal innovation and gender in some relationships between the model and product features confirmed, it is necessary to pay attention to the individual characteristics of people using these technological services in the design of telemedicine services.

 

The purpose of this study was to compare the self-description of physical characteristics of athletic and non-athlete male students by self-concept and self-concept of physical fitness.

For this purpose, we selected 100 male high school students in the city of Chamestan from 12-15 years old using random sampling. After weighing the weight, height, body mass index, subjects were divided into four groups: athlete-obese (group 1), non-athlete obese (group 2), athlete non-obese (group 3) and non-athlete non-obese (group 4). All four groups completed PSDQ self-descriptive questionnaire they made the questionnaire was divided into two levels of physical self-concept and physical appearance self-concept, each separately measured. For analysis and comparison, one-way analysis of variance (ANOVA) was used to analyze and compare.

The results showed that non-athlete athlete students had better physical fitness and apparent ability than non-athletic athletes, non-athlete, non-athlete, and this difference was statistically significant. In addition, the results showed that self-concept of body fitness and body appearance of non-athletic and non-athletic subjects were not significantly different, and the difference between them was not statistically significant. In addition, non-athletic, non-obese, non-athlete with obesity, in terms of self-concept, had better physical fitness and self-concept, but also statistically significant.

Physical activity and exercise can have a significant positive effect on physical self-description (physical appearance, body fitness self-concept) of male students.

In a complex and dynamic organizational environment, talent management is the key to the success of organizations and leads to sustainable growth, but it has become one of the fundamental challenges of HRM.

This study aims to provide a general model of talent management in the Ministry of Sports and Youth.

The research method was mixed qualitatively and quantitatively. Qualitative information was identified using Delphi technique and semi-structured and in-depth interviews with 15 experts, 11 Dimensions and 85 indicators. Finally, a questionnaire of 85 talent management questions was set for the quantitative part and according to the size of the population, 280 questionnaires were analyzed using Cochran's formula using structural equation modeling with PLS2 and SPSS20 software.

The results of exploratory factor analysis identified and confirmed 11 dimensions and 83 indicators. In the ranking of dimensions, the dimensions of preservation, information and communication and performance were ranked first to third, respectively. Among the indicators, compensation, technology, job satisfaction, performance appraisal, succession planning, reverence, transfer of experiences, futurism, meritocracy, transparency of strategic goals and supportive laws were ranked highest in each dimension of talent management. The goodness of fit index was calculated to be 0.76, which indicates that the overall fit of the model is appropriate.

Talent management is very important for the staff of the Ministry of Sports and Youth and should also be important for the organization because it plays a key role in achieving the success of the organization and sustainable development.

VitaminD deficiency is a common problem, and it is related to increased risk of metabolic syndrome and cardiovascular disease. But vitaminD has a beneficial effect on insulin secretion. The aim of this study was to investigate the effectiveness of vitaminD supplementation with Pilates training on vitaminD status and insulin resistance in overweight men.

This quasi-experimental study was conducted in 50 men (45-55years) with overweight. Volunteers were selected through convenience sampling and were divided into Pilates training, VitaminD, combined, and control groups. The Pilates program was performed 3sessions/week, 60-75 minutes for session, with the intensity of 50-75% of reserve heart rate. The oral VitaminD received 50000 units of weekly. Data was analyzed by paired t, ANOVA and KruskalWallis tests with a p-value less than 0.05.

According findings, 60% and 40% of the subjects had deficienciy and insufficient levels of vitaminD, respectively. 8 weeks of Pilates training, VitaminD consumption and the combined intervention were associated with a significant increase in 25(OH)D and decreased glucose, insulin, and IR (P<0.05). But the effect of combination interventions and VitaminD consumption was greater on increasing levels of 25(OH)D than Pilates training. Combination intervention was also associated greater decrease in insulin and IR compared with VitaminD supplementation (P<0.05).

It seems that VitaminD, Pilates training and a combination of these interventions can improve the glycemic status and VitaminD in overweight people with low levels of vitaminD. Therefore, maintaining a normal status of vitamin D helps to develop the health of overweight people.

Nowadays, the prevalence of chronic low back pain is increasing in the world and vitamin D deficiency is associated with impaired neuromuscular function and chronic musculoskeletal pain. In addition, exercise therapy and selection of core stabilization exercise interventions have main roles in rehabilitation of these patients. The aim of this study was to investigate the effect of 8 weeks of core stabilization exercises and vitamin D intake on the pain and functional disability levels in women with chronic non-specific low back pain.

This clinical trial study was performed by pre-test and post-test design. Initially, 48 women with chronic non-specific low back pain were selected by available sampling method and then randomly divided into control, exercise, vitamin D and exercise+vitamin D (combined) groups (12 subjects in each group). The exercise and combined groups performed 8 weeks of core stabilizing exercises. The vitamin D and combined groups received 50,000 IU vitamin D/week for 8 weeks. The severity of the pain and functional disability, before and after the interventions, were determined by visual analog scale of pain and Oswestry questionnaire, respectively. Data analysis was performed using Paired T-Test and ANOVA with the significance level of less than 0.05.

Eight weeks of core stabilizing exercises, vitamin D intake and the combined intervention were associated with a significant reduction (p<0.001) in pain (20.15%, 18.60% and 34.20%, respectively) and functional disability (48.35%, 44.26% and 51.81%, respectively) in women with chronic non-specific low back pain. In addition, combined intervention induced more reduction in the pain compared with two other interventions (p<0.001)

It seems that core stabilizing exercises, vitamin D intake, and the combination intervention can reduce the pain and improve the physical function in patients with chronic low back who have low levels of vitamin D. But combined intervention is associated with greater effectiveness in reducing the pain.

 Deficiency or insufficient level of vitamin D is very common in patients with liver disease, and is closely related to musculoskeletal pains, including low back pain.

 The current study aims to investigate of the activity of liver enzymes in women with chronic low back pain following core stability exercises and vitamin D intake.

 This clinical trial was conducted on 48 women (Mean±SD of age=36.59±5.50 years) in 2019 selected by using a convenience sampling method. They were randomly divided into four groups of control, vitamin D, exercise and combined (exercise +vitamin D). The last two exercise groups performed 8 weeks of core stability exercises with different intensities. The vitamin D  and combined groups received 50,000 IU/week of vitamin D for 8 weeks. Alanine aminotransferase (ALT), Aspartate aminotransferase (AST) and Alkaline phosphatase (ALP) activities were measured before and after the interventions. Data were analyzed by using paired t-test and one-way ANOVA.

 Eight weeks of core stability exercises, vitamin D intake, and the combined exercise and vitamin D supplementation caused a significant reduction in the activity of AST, ALT, and ALP enzymes. The combined intervention induced more reduction in the AST and ALP activities compared to other two groups received exercise and supplementation alone, and the decrease in ALT activity following the combined intervention was higher compared to the exercise group. 

 It seems that the core stability exercises, vitamin D intake, and combination of exercise and vitamin D supplementation can improve liver function in women with chronic low back pain who have vitamin D deficiency by reducing the activity of liver enzymes. The combined intervention has greater effectiveness in improving liver function.

The aim of this study was to identify and prioritize the effective factors of fan development in the Iranian Football Premier League and to present a model. The research method was a qualitative-quantitative mix with the exploratory approach and the statistical community included experts in the qualitative section and spectators in the Premier League stadiums in the 98-99 season. 15 people in the qualitative section and 400 people in the quantitative section formed the statistical sample by the accessible method. The data collection tool in the qualitative part of the interview was semi-structured and the results of this interview were used in the form of a questionnaire with 13 main factors in the quantitative part. In this study, SPS software version 23 and PLS version 2 were used for content validity from the point of view of experts and structural validity (exploratory and confirmatory factor analysis) and modeling of structural-equations. Model fit index was reported to be 0.65 GOF = and the research results confirmed the final model in 13 factors. These factors are the interaction of staff and fans, distribution channel, fan management, public relations, recruitment program, quality and process, promotion, product, market power, location and facilities, incentives, law enforcement and pricing vote the most to the least impact. They have the support of developing fans in the Iranian Football Premier League. It is necessary to invest and pay attention to these areas.