درخت حوزه‌های تخصصی

Background: In addiction field, there is more attention on men than women, while women are more vulnerable to addiction. Because of the importance of women in the family foundation, we decided to investigate this subject. Purpose: This study aims at the effect of 8-weeks of combined training with methadone on cardiovascular inflammatory markers fibrinogen and CRP on addicted women. Method: This study accomplished as a semi-experimental research. 24 addicted women were randomly selected as samples from Zahedan Mohabbat addiction Camp that divided in two groups of methadone (N= 11) and methadone/ exercise (N= 13) by the same variables such as age, BMI, type and duration of drug withdrawal. The protocol of combined exercise was included of aerobic added to strength training; also methadone was taken according to the camp instructions, too. Blood sampling, pre and post 8 weeks exercise were directly collected from anterior veins of samples and the levels of plasma fibrinogen and CRP were measured in lab. To compares of the pre and post tests means for each group as well as both groups, paired and independent t-test via SPSS software version 24 were used, respectively. Statistical significant level was considered PResults: The results showed that CRP values in both groups decreased significantly (methadone: p <0.05, T=-2.21 and methadone/ exercise p <0.05, T=-2.63). Also, plasma fibrinogen values in both groups increased significantly (methadone: p <0.05, T=5.03 and methadone/ exercise: p <0.05, T=4.21). Also, there were no significant difference between post-test’s levels of CRP and fibrinogen between methods (P>0.05). Conclusions: It has suggested that the method of methadone/ exercise might be used as such as methadone method by the same results on plasma fibrinogen levels and CRP for withdrawal addiction women.

The purpose of this study was to develop a scale for measuring the service quality in sport scientific journals. A mixed approach was conducted to fulfill the research objectives. In qualitative phase 15 sport paper writer were interviewed and in quantitative phase, 357 sport researchers were studied through systematic random sampling. The face and content validity of the scale was confirmed by 15 experts and the final questionnaire of the scientific journals service quality was provided to 29 subjects. 26 items were ranked in five factors (accountability speed, executive structure, trustworthiness, employees and updating) based on exploratory factor analysis with orthogonal rotation. Cronbach's alpha, KMO, Bartlett Test and confirmatory factor analysis were used by SPSS and LISREL for data analysis. It is worth noting that the results of confirmatory factor analysis and Cronbach's alpha coefficient (0.91) supported the five-factor structure of JourQual scale and confirmed its validity and reliability.

The purpose of this study was to develop a strategic plan for Pahlevani and Zourkanei federation in Iran. The statistical population of this study included members of the federation's board of directors, chairmen of the federation committees, heads of provincial councils as well as sports and management elites. 50 experts participated in this study through total sampling approach. According to the results of the research, a total of 18 strengths, 30 weaknesses, 12 opportunities, and 17 threats for Pahlevani and Zourkanei federation were identified and based on the internal and external factors, the strategic position of the Pahlevani and Zourkanei Federation in the WT region was determined. A total of 19 strategies, including five SO strategies, five ST strategies, six WO strategies, and three WT strategies for the Pahlevani and Zourkanei federation, were developed. Therefore, according to the results of SWOT analysis matrix, it is necessary to use more than a defensive or stabilization strategy to manage the development of Pahlevani and Zourkanei federation.

The aim of this study was to develop a model for examining the mediating role of job characteristics in the relationship between structural empowerment and professional commitment of referees in female's Futsal Premier League. To collect the required data, we distributed the research questionnaires among 75 Futsal Premier League referees invited to the pre-season qualifying class in 2020, and finally we received 63 valid questionnaires. We conducted structural equation modeling, confirmatory factor analysis and path analysis for data analysis by using PLS Smart software. The findings demonstrated that structural empowerment can predict professional commitment, but the relationship between the two variables was not significant. The relationship of structural empowerment with job characteristics and professional commitment was not significant. The mediating role of job characteristics in the relationship between the two variables was not significant. The components of information sharing in structural empowerment, attachment to professional commitment and diversity of skills in job characteristics had the highest averages. Given that the lack of significance of the relationship among structural empowerment, professional commitment and job characteristics, is questionable and it should be assessed in great details.

The purpose of this study is to explore the effective factors on the productivity of human capital via an interpretive structural modeling (ISM) in General office of Sports and Youth in Khorasan Razavi Province. The present study is a qualitative research with an analytical nature and it is also an applied one that was conducted via interpretive structural modeling. Literature review, interviews and ISM questionnaires were used for data collection. The research population included professors and experts in sports management, managers, deputies and staff of the General office of Sports and Youth in Khorasan Razavi, of which 35 people were totally selected through purposeful sampling in three stages of this study. According to the research findings, 59 effective indicators were identified under seven major dimensions playing role in improving the productivity of human capital, which were classified into five levels. Motivational factors, organizational culture and work environment, the relationship between managers and employees along with individual factors, the quality of labor force, and finally the technology factor were identified under five levels of the model. Finally, it can be concluded that managers in sports organizations should pay special attention to the technology factor and its indicators, which have been identified as the foundation of improving employees’ productivity, which then provides the ground for exploiting other dimensions at higher levels.

Justice as a basic necessity of social life, plays a critical role in administration of sport teams and sport organization. The aim of the present study was to investigate the relationship between Perceived Organizational Justice in Collegiate Sport Teams and Sport Achievement Motivation. In this descriptive –correlative study, 102 student athletes (56 males, 46 females) who were selected as statistical sample from Northern Khorasan and Razavi Khorasan provinces responded to Organizational Justice Questionnaire developed by Niehoff & Moorman (1993) and sport achievement motivation Questionnaire developed by Gill et al. (1983). Conducting correlation coefficient for data analysis revealed that perceived organization justice and its subscales significantly correlated to sport achievement motivation in collegiate sport teams. Moreover, the results of the stepwise regression revealed that, among perceived organization justice subscales, interactional justice was the strongest predictor of sport achievement motivation.

The purpose of this study was to explore why and how can donors be involved in the development of student sports?. The research method was based on grounded theory approach (Strauss & Corbin method). The statistical population in the qualitative stage included 15 experts and key experts including university professors and executives of university sports who were selected by purposive sampling, and at the quantitative stage, 315 people who were active in the field of charity and student sports were studied. The results were analyzed using confirmatory factor analysis in the form of structural equations with SPSS and PLS software. 73 primary concepts were identified, which were categorized into 58 sub-categories. Compiled to collect information. According to the developed model, the existence of security for donors in investing in student sports and providing the necessary support such as granting appropriate facilities, exemptions, and tax discounts provide incentives for the private sector to participate in various sub-categories of physical education and sports. In addition, considering other barriers as well as focusing on developing strategies, could potentially lead to donor investment and participation in student sports.

Background: Children's motor skills are inversely related to sedentary screen time. COVID-19-lockdown during the pandemic has caused a further increasing on screening time. Aim: The current research aims at investigating the impact of Stickygym games on motor development of children. Materials and Methods: Twenty-eight eligible subjects (4-6 years old) were chosen and randomly grouped into control group (n=13) and experimental group (n=15). Using TGMD-2 test, gross motor development was measured. The experimental group performed online Stickygym games for 8 weeks. Stickygym kit includes Hook & Loop strips, with two linear polyester strips being easily but firmly attached together. Trained instructors performed online training sessions. In the end, TGMD-2 test was conducted again in person. Data analysis was done using Shapiro-Wilk, Levene and the analysis of covariance tests were with the significance level of 0.05 in SPSS 24. Results : Some locomotion skills were significantly improved by Stickygym games: bound ( P =0.005), galloping ( P =0.012), and running ( P =0.003), as well as object control skills: overhand throw ( P =0.004), underhand roll ( P =0.01), and striking a stationary ball ( P =0.021). Conclusion : This play kit can be utilized by pre-school educators and parents for improving object control and locomotion skills in preschool children.

Background: Since the outbreak of COVID-19 virus and the rise in concerns, researchers have been investigating risk factors of this disease. One of the factors affecting the hospitalization of influenza patients is high BMI. Due to the relation between COVID-19 disease and influenza. Aim : the purpose of this study was to investigate the effect of BMI on the infection and severity of COVID-19 patients. Materials and Methods: BMI of 126 men was calculated and three groups of "appropriate weight", "overweight" and "obese" were identified. Then, the prevalence and severity of their disease were recorded. For data analysis, chi2 test was used in SPSS 26 software at a significance level of P = 0.05. Results: Prevalence of COVID-19 infection in the group with “appropriate weight”, ”overweight” and “fat” were 56%, 61% and 58%, respectively. Mild infection was reported in the three groups, 27%, 27% and 26%, respectively; Moderate infection was 22%, 26% and 26%, respectively; and severe infection was 7%, 8% and 5%, respectively. Therefore, there was no significant difference between their infection and the severity of infection in groups ( P ˃.05). Conclusion: Obesity has negative effect on the body's immune response and lung function. The hospitalization rate for influenza is higher in this group. But in infection of COVID-19 and severity of this disease, no significant difference was observed between men with different BMI. However, due to the relation between obesity, cardiovascular disease, diabetes, and the vulnerability of these patients to the COVID-19 virus, serious attention is necessary to prevent these individuals from COVID-19.

Background: flatfoot is a common deformity characterized by the midfoot arch collapses during walking. As the midfoot is responsible for shock absorption, persons with flatfoot experience increased risk of injuries Aim: to the purpose of this study was to compare some motor-physical factors, lower extremity performance and stability index in male adolescents 10-12 having structural flat foot with and without insole. Materials and Methods: Subjects who utilized medical insoles for four to six months were selected in access from technical orthopedic in Karaj. After parents got aware of the purpose and conditions participating in research, their height and weight were measured. In the first day, they were assessed by motor-physical factors test (agility, speed, endurance), lower extremity performance (one-leg jump, cross jump, maximum distance access, walking six meters) and stability index wearing insole and on the next day without wearing insole. To analyze data, paired t-test was utilized. Wilcoxson was used respectively for parametric and non-parametric data. Results : According to the paired t-test a significant difference was observed in the 6-meter timed test. Mean difference was slower in wearing insole compared to not wearing insole. Moreover, stability index results showed more stability when not wearing insole which eyes were closed to significant. Conclusion: According to the results, wearing insole in individuals with flat foot, could slow down the walking speed. However, wearing insole may improve stability index when visual input is not in access.

Little research has been carried out on the common symptoms and mental disorders in Iranian elite athletes. The purpose of this study was to identify the mental health problems in Iranian elite athletes as a retrospective study at the National Olympic Academy (NOA) of Iran. The present study is a cross-sectional and retrospective descriptive study which was conducted by evaluating the athletes' psychological documents. A total of 143 athletes (male, n= 83, female, n= 60) were analyzed from the population of elite athletes (n=240) who referred to the mental training and consulting center in the NOA during the years 2007-2021. The results showed that most athletes referred to the center to improve their performance (37.8%). Anxiety (27.3%), depression (16.8%), interpersonal problems (11.2%), impulsiveness (2.8%) post-traumatic stress (PTSD) (2.8%), sleep disturbance (1.4%) were the most common mental disorders reported by athletes. In addition, surveying the relationship between demographic characteristics and mental health issues revealed a relationship between gender and mental health problems; there was no relationship between other demographic variables with mental health problems. The results of this study illuminate the spread of common mental health problems in Iranian elite athletes over the last fourteen years. Screening and diagnosing psychological problems provide a better understanding of the application of appropriate psychological interventions and improving the mental health of elite athletes. Accordingly, future research may focus on better understanding of mental health problems reported in this study and studies them in a larger population.

The current study aimed to investigate that whether young people with mild intellectual impairments (II) having various levels of IQ have different physical fitness and body composition. Moreover, this study aims to answer this question that is there any association among IQ level, Body Mass Index, and physical fitness factors? A number of 1200 students from all Tehran’s special high schools were screened, and finally, 355 of them with mean age 24.6 ± 3.0 years, height 173.5 ± 6.8 cm, weight 78.6 ± 8.5 kg, and body mass index (BMI) 23.3 ± 2.8 kg/m2 were chosen to be included in the study based on including criteria. All participants had a mild II with the IQ range of 50 to 75 based on the Wechsler Intelligence Test. Participants' physical fitness was assessed by Eurofit special battery test. Body composition evaluation measured by Body Composition Scale. The results showed that there were significant differences in most physical fitness factors between males and females, except in dynamic balance and flexibility (P ≤ 0.05). There was a significant association between IQ levels with all physical fitness factors (P ≤ 0.05) except for flexibility. Different IQ levels were associated with physical fitness factors, so that II students with low IQ had lower physical fitness than those who had higher IQ. Practitioners should consider these differences when working with II people of different gender and different level of IQ.