درخت حوزه‌های تخصصی

The purpose of this study was to investigate the effect of strategic thinking skills on the effectiveness of strategy creation process of team sport federations in Iran. 57 questionnaires distributed among the managers of team sport federations to collect the required data. Strategic thinking skills questionnaire and effectiveness of strategy creation process questionnaire adapted from Moghimi and Ramezan questionnaire (2015). Structural equation modeling with partial least squares (PLS) approach was employed for data analysis. The results indicated that strategic thinking skills of managers had a significant effect on the effectiveness of strategy creation process in team sport federations. According to the findings, improving the strategic thinking skills of managers in sport federations, is critical in the process of creating effective strategies.

Introduction: Prescribing the Adrenergic beta-Antagonists is very common in treating cardiovascular diseases. The aim of this study was to compare the effects of aerobic training in patients with coronary artery disease, prescribed two different types of beta-blockers (selective and non- selective) on the patient's lipid profile (Lipoproteins) and FBS (Blood Glucose). Materials and Methods : Sixty patients with coronary artery disease, aged 45-65 years, were compared in two groups of selective (n=36) and non-selective (n=24) users of beta-blockers. The training program consisted of 8 weeks of aerobic exercise on the treadmill (3 sessions per week, about 50 minutes per session, with an intensity of 40% to 60% of the heart rate reserve). Each study patient’s lipid profile and FBS level were obtained before the onset of the study and after the end of the intervention. The collected data were analyzed using repeated-measures Analysis of Variance (ANOVA). Results: In the selective group, lipid profile and FBS did not significantly change. In the non-selective group, FBS and triglyceride levels were significantly reduced after the intervention; however, HDL, LDL, and total cholesterol levels were not significantly changed (P>0.05). Conclusion: The results of this study showed that aerobic training in patients with CAD who used non-selective beta-blockers has more positive effects.

Introduction: To examine the effects of a 6-week hopping exercise program on time to stabilization and perceived stability among athletes with chronic ankle instability. This is a randomized controlled trial.Materials and Methods: A total of 28 basketball players with chronic ankle instability (Mean±SD age; 22.67±2.88 y, Mean±SD weight: 80.47±8.48 kg, Mean±SD height: 186.82±3.09 cm) participated in this study and were randomly divided into two equal groups of 14 people each: 1. Experimental; and 2. Control. The experimental group performed hop exercises 3 times per week for 6 weeks. The control group received no intervention. Time to stabilization for anterior-posterior and medial-lateral components of ground reaction force, as well as ankle joint function assessment tool were found before and immediately after the exercise program. Descriptive statistics, independent t-test, and paired sample t-test were used to analyze the data at the significance level of 95% (α≤0.05).Results: The 6-week hopping exercise program led to a significant decrease in the time to stabilization of medial-lateral and anterior-posterior of ground reaction force and also a significant increase in the score of ankle joint function assessment tool (p <0.05).Conclusion: Given the effectiveness of hopping exercises, postural control deficit, and time to stabilization in sport exercises, it is suggested that these selected exercises be used in training and rehabilitation protocols.

Introduction: muscle performance could be influenced by physical features of the body. The purpose of this study was to investigate the effect of the body type on the electrical activity of the abdominal muscles during gait. Materials and Methods: Heath Carter somatotype method was used to determine body type. The performance of rectus abdominis muscle (RA), internal oblique muscle (IO) and external oblique muscle (EO) was recorded. The mean and the standard deviation were used for description of the data and ANOVA and post-hoc Tukey were utilized for comparison between three body types at the significance level of P<0.05. Results: The results showed that there is a significant difference in the root mean square (RMS) of EO and IO and the average percentage of that is higher in ENDO in comparison with the other two types. Also, the duration of electrical activity (DEA) was only significant for the IO between the endomorphs (ENDO), the mesomorphs (MESO) and the ectomorphs (ECTO) and its mean was higher for the ENDO. Discussion: According to the findings of the study, we could claim that the difference in the performance pattern of the muscles in the abdominal area during gait is influenced by body type.

This article aims to discourse analysis the concept of corruption in the Ninety (90) TV program and understands how this program is used to criticize corruption and construct the corruption discourse in football. This research has attempted to analyze three programs on corruption using a CDA method and conflating Laclau, and Mouffe with Fairclough, and Van Dijk's approaches to understand the discursive order of the program and to highlights nodal points and moments. In this TV program, the nodal point of Ferdowsipours' discourse is anti-corruption: poor management, slogan-oriented, Lack of seriousness, institutionalism, Lack of government involvement, democracy, and attention to infrastructure are its moments. In the context of political corruption, the involvement of government and politicians in sports affairs is irrational, and attention to democracy and good governance can be helpful. In the context of competitive corruption and bribery, the most important way out of corruption is to pay attention to the cooperation of institutions and administrative and legal grounds. Regarding the dealings in football, the host criticized the people involved in this case and pointed out that corruption in Iranian football is common. In this program, the signifiers for law, governance, equality, and serious struggle are some of the essential signifiers highlighted. Each participant has considered the entry of politics into sports as a factor of Corruption. Furthermore, the focus of the program is more on the social practices in Iran (the current state of football), and its epistemes are based more on the local context.

A few second prior to an expected event, a systematic decrease in heart rate (HR), reflecting attentional processing is observed. Arousal variations however, restrain the interpretation of this decrement. The present study, aimed to investigate vigilance and arousal effects during a skilled performance separately, using separate measures for the two psychological states. HR and skin conductance level (SCL) were measured as an index of vigilance and arousal from 18 elite and 19 novices during 30 self-paced, self-initiated basketball free throws. Values of HR and SCL were calculated at half-second intervals from 10 s before to 10 s after each shot and were analyzed using repeated measures ANOVA. This helped to compare pre-shot and post-shot patterns of physiological changes separately in elites and novices. In elites, there was a slow reduction in SCL prior to, and a rebound increase immediately following the shot. These were smaller for novices. Similar findings were observed when good shots were compared to bad ones. The value for rebound after good shots reached 8 times more than the pre-shot value. A sharp increase in HR, up to 40 bpm was found 4 second before the shot, which returned to pre-shot value after 2s for elites; this did not return in novices. HR in bad shots was higher than good shots. Results indicate that the SCL reflect arousal level at the time of task and its pattern of variations reflects skill level. Although, HR was lower in good shots, the pattern of variation in HR reflected physical requirements of the task. Results were compared to previous findings and discussed in relation to the hypotheses explaining arousal and vigilance in human behavioral performance.

Background: Hyper kyphosis is a common postural issue that affects many women, often leading to negative body image. Aim: The purpose of this research was to investigate the impact of an 8-week corrective exercise program on the body image of women with hyper kyphosis. Materials and Methods: The research method used in this study was quasi-experimental. The study population consisted of female students aged 18 to 26 years with hyper kyphosis at Shahid Rajaee University. Participants were randomly assigned to either the experimental group (n=20) or the control group (n=20). Hyper kyphosis was measured using a flexible ruler, while body image was assessed using the Body-esteem Scale for Adolescents and Adults. The questionnaire had a reliability coefficient of 0.83 as measured by Cronbach's alpha. After 8 weeks of corrective exercise, both the experimental and control groups completed the questionnaire again. The control group did not receive any training during this time. The data were analyzed using the mixed ANOVA method with SPSS-26 software at a significance level of 95%. Results: The results of the mixed ANOVA analysis showed that the main effect of the training group and the interaction between the group and test stages were significant in the post-test stage for the dependent variable of total body image (F=6.82, P =0.013), appearance (F=6.72, P =0.014), attitude (F=8.81, P =0.005), and kyphosis angle (F=18.91, P =0.000). However, there was no significant effect of training on weight satisfaction. Conclusion: The results of this study indicate that eight weeks of corrective exercise significantly reduced the hyper kyphosis angle ( P =0.01), resulting in an improvement in the subjects' posture and a decrease in deformity. This improvement in appearance led to an increase in satisfaction with their appearance, as demonstrated by improvements in their body image.

Retirement is one of the difficult events. Athletes should adapt to the difficult experiences and heighten a sense of worth. Drug abuse as a negative coping behavior is a painful reaction to retirement. The aim is to identify the factors influencing the tendency of retired elite wrestlers to drug abuse. With a biomedical approach, this phenomenon was investigated. Using the method of contextual theory and semi-structured in-depth qualitative interview technique, factors influencing the tendency of retired elite wrestlers to drug abuse were studied. The data analysis method was coding, done in three stages of open, selective and axial coding. The data are in a paradigm model. Factors such as sexual needs, strenuous exercise and injury were taken as causal conditions; physical pain is taken as a mediating condition, and retirement age and first experience of drug abuse as an intervening condition and physiological need and doping as contextual conditions. These factors created a paradigm model. Athletes' strategies for drug abuse are: leisure purposes, wider variety of drugs, continuity of drug use and finally compulsive drug use. The consequences of drug abuse were initially pleasant and positive, but with continued drug use, it had harmful consequences physically, psychologically and socially.

Introduction: The purpose of this study was to evaluate the effectiveness of cognitive rehabilitation and physical exercise on locomotor movement skill of children with DCD. Materials and Methods: The present study is a quasi-experimental study with a pre-posttest design with a control group. 80 boys aged 6-10 years (mean age: 8.68±1.2) were selected from primary school students in Shiraz using multi-stage cluster sampling method and were randomly divided into three experimental and control groups. Developmental Coordination Disorder Questionnaire (DCDQ7), Raven Intelligence Test and Movement Assessment Buttery for Children (MABC-2) were used to screen children and the Ulrich Gross Motor Skills Development Test (TGMD-2) was used to assess locomotor movement skills. Experimental groups performed the interventions for 8 weeks, Paired t-test and analysis of covariance were used to analyze the data. Results: The results showed that the locomotor movement skill score in the groups of cognitive rehabilitation, physical exercise and combined intervention from the pre-test to post-test stages increased significantly (P<0.05). While in the control group no significant difference was observed (P>0.05). Conclusion: Concomitant use of cognitive rehabilitation-related interventions with physical exercise is more effective in improving locomotor movement skill in children with developmental coordination disorders.