درخت حوزه‌های تخصصی

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.

The purpose of this study was to assess the effect of brand association on the brand positioning of football clubs in the Iranian premier league with the mediating role of fan-team identification. The present study is a descriptive and correlational study that has been conducted in the field. The research population of the study included football fans of popular football clubs in the Iranian premier league. Based on the formula for the SEM approach , 208 fans were selected through purposive sampling. Brand association, brand positioning, as well as fan-team identification Questionnaire, were used to collect data. The validity of the tool was calculated and confirmed based on content and structural validity, and the reliability was assessed according to Cronbach's alpha and composite reliability. Structural equation modeling via PLS was used to test the research hypotheses. The results showed that brand association had a significant effect on both brand positioning (β= 0.23) and fan-team identification (β= 0.31). The results also confirmed the positive and significant effect of fan-team identification on the brand positioning of football clubs in the Iranian premier league (β= 0.29). Moreover, based on the Sobel test, brand association through fan-team identification was effective on the brand positioning. The value of the GOF also indicated the proper fitness of the research model. This study is one of the few types of research that combines and examines brand associations, fan-team identification, and brand positioning through a comprehensive model in the field of Iranian sports.