درخت حوزه‌های تخصصی

According to the new attitude in the management of gymnastics clubs, in the present research, an attempt has been made to design the implementation model of the blue ocean strategy in gymnastics clubs. This research was a qualitative study. The participants in the research were university experts who, according to the nature of the research, were conducted with 10 people in a snowball manner with semi-structured interviews until theoretical saturation was reached. In order to ensure the reliability and validity of the research, intra-subject agreement and expert opinions were used and their opinions were revised. To form the theory, Strauss and Corbin's method was used in the form of three stages of open, central and selective coding, and by using blue ocean strategy implementation tools such as the strategy canvas, the four action framework, etc., in order to present the ocean strategy implementation model. 179 The final concept was designed in the form of the foundation's data theory conceptual model consisting of the central category, causal conditions, contextual factors, intervening conditions, strategies and consequences. Also, a 5-step model for implementing the blue ocean strategy in gymnastics clubs was presented, and finally, this model was combined with the conceptual model of the foundation's data theory and the final model was obtained. In order to identify the right path to move towards the blue ocean, strategies of creation, increase, decrease and elimination were used, and finally, the implementation of the strategy resulted in the results of the research.

The purpose of this research was to identify strategic positioning of sports diplomacy capacities for sustainable development. The research population included professional athletes and coaches; who had experience working at international sports levels. The sample was selected via availability methods (146 individuals). Data collection was conducted through a researcher-made questionnaire. Data analysis was performed using SWOT matrix. Five professors confirmed the validity of the questionnaire, and its reliability was determined by Cronbach's alpha value of 0.89, indicating the high reliability. The results revealed that the strategic position of sports diplomacy capacities for sustainable development is in the WT quadrant, indicating that the most appropriate strategies that can be applied are defensive ones. Accordingly, respective planners and decision-makers in sports, especially policy-makers, should consider appropriate strategies to improve Iranian sports diplomacy capacities, leading to a more sustainable development.

Background: Researchers have always been interested in the focus of attention and the quiet eye. However, the effect of distance of attentional strategy in different anxiety conditions has remained unclear.Aim: The purpose of this study was to determine the effect of attentional strategies on gaze behavior and the performance of dart throwing in novices under anxiety conditions.Materials and Methods: The participants were 42 female, Alzahra University students, aged 18-35 years. Participants with high trait anxiety (score higher than 24) were excluded using the Sports Competition Anxiety Test through a state anxiety questionnaire. Participants were randomly divided into two groups of high and low-trait anxiety. They performed the dart-throwing task counterbalanced in four different attention strategies (distal external attention, proximal external attention, internal attention, and control). The participants in the high-anxiety group were told that if they performed each throw correctly, they would receive a cash prize, and the low-anxiety group performed the throwing without anxiety and any instruction. At the same time as dart throwing, gaze behavior data was recorded with an eye tracker device. After the anxiety manipulation, the individual's anxiety was measured with Competitive State Anxiety Inventory-2.Results: The results showed that the low-anxiety group performed better than the high-anxiety group (P=0.01). Also, external attention had a lower radial error in both high and low-anxiety groups. No significant difference was found in the average duration and number of fixations between different attentional strategies and groups. The comparison of the mean showed that in the low anxiety group, the fixation duration in the external attention strategy was longer, and in the high anxiety group, the fixation duration in the external attention and control strategies was longer than other strategies.Conclusion: The present study supported the preplanning hypothesis, attentional control theory, and inhibition hypothesis, but was inconsistent with the restricted action hypothesis. These results showed the importance of the effect of anxiety on gaze behavior and performance in directing future research.

Background: This study addresses the challenge of enhancing selective attention in skilled badminton players, a critical cognitive skill for optimal performance, by investigating the combined effects of transcranial direct current stimulation (tDCS) and mindfulness training.Aim: The present study was conducted to investigated the effects of a tDCS-mindfulness program on selective attention in skilled badminton players.Materials and Methods: Thirty-six male badminton players (mean age= 23.78±3.09 years) were selected based on exclude and include criteria and randomly divided into three groups of 12, A-tDCS-Mindfulness, sham-tDCS-Mindfulness (five sessions), and control. The Edinburgh Hand Test was used to determine the dominant hemisphere of the brain. The Computerized Stroop Test was used to measure selective attention capacity. Nonparametric Wilcoxon, Kruskal-Wallis and Mann-Whitney U tests were used.Results: The results showed that the within-group changes in both A-tDCS and sham-tDCS mindfulness groups, it was able to have a significant improvement on the Stroop test score and time of interference. In the comparison between groups effect, it was also found that there is a significant difference in time and score between the three groups, and respectively, the A-tDCS mindfulness, sham-tDCS mindfulness and the control group had the best performance. Based on the results of the present research, it was found that the presentation of A-tDCS mindfulness can be more effective on the time and score of selective attention of badminton players.Conclusion: Results suggest that the use of tDCS along with mindfulness can improve selective attention in badminton players.

Background: Players are under more pressure in soccer matches. In those conditions, they must use visual information to make better decisions. However, few studies have investigated such conditions of soccer players.Aim: The aim of the present study investigates the effect of under-pressure conditions on decision-making and visual search behavior of soccer players.Materials and Methods: Eighteen soccer players with a mean age of 14.5 (and SD ±1.5) from Tehran Youth Premier League took part in this study. Decision-making task included 60 images of 3 simulated soccer conditions on a monitor including neutral (no pressure), result pressure, and monitoring pressure. During all of these conditions, eye movements were assessed by an eye tracker device.Results: The results of repeated measures ANOVA test showed the speed and accuracy of decision making, the number of fixations and the mean duration of eye fixation were significantly affected in all three conditions. In addition, the results showed a significant reduction in decision-making speed in two conditions of result and monitoring pressures and a significant increase in decision accuracy and the mean number and duration of eye fixation in the two conditions of result and monitoring pressures compared to neutral pressure.Conclusion: Due to the changes in visual and speed-accuracy mechanism of decision making and the importance of these factors in the successful performance of soccer players, it is recommended that soccer coaches create psychological pressure conditions during training sessions, ask players to see with better concentration and attention, and to decide more quickly and accurately so that they can better overcome the challenges in competition environment.