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Introduction: Children and adolescents with Developmental Coordination Disorder (DCD) usually fail to understand spatial awareness and motor timing. The present study assessed Rhythmic Auditory Stimulations (RAS) and Simple Auditory Stimulations (SAS) to facilitate the learning of timing in sequential motor task and recorded the results of their relative and absolute timing errors.  Materials and Methods: 56 male students aged 9-12 years with DCD in Neyshabur city were selected by diagnosing with the following tools: Teacher Motor Inventory, Parental Developmental Coordination Disorder Questionnaire, Movement Assessment Battery for Children-Second (MABC-2 movement test), spatial-visual memory assessment, intelligence assessment, RT test, and biopsychological health status evaluation. Then, they were divided into RAS, SAS, control group 1 (visual), and control group 2. Moreover, a pretest score was performed. Next, the training protocol was presented in 10 blocks of 5 attempts and the acquisition test was performed. Finally, the retention and transfer tests were performed after 48 hours and 10 minutes, respectively.  Results : Based on the obtained results, a significant difference was observed between the visual stimulation group and the RAS and SAS groups in relative and absolute timing components (P≤0.05). However, no significant difference was reported between the rhythmic, SAS, and visual-auditory stimulation groups in relative and absolute timing variables (P˃0.05). Conclusion: Finally, no significant difference was observed between the RAS and simple stimulations although the graphs displayed the effect of the first stimulation more than that of the second one.

Introduction: Iliotibial Band Syndrome (ITBS) is among the most common injuries in distance runners. Thus, the present study investigated the effect of a special strengthening exercise program for abductor’s muscles according to NSCA protocol, on pain reduction and lower extremity function improvement among elite distance runners with ITBS. Materials and Methods: The subjects of the present study were 32 elite distance runners who were randomly divided into two groups of control and experimental (n=16/group). The experimental group performed the exercise program for 8 weeks; however, the control group followed their routine program. The pain was assessed by the Visual Analogue Scale of pain (VAS) and the lower extremity function was assessed by the Lower Extremity Functional Scale (LEFS). In the statistical procedure, the repeated-measures Analysis of Variance (ANOVA) and Bonferroni test was applied to determine the within-group and between-groups differences of the study variables, and for assessing the stability level of protocols’ effect on the experimental group and comparing the stages, respectively. The significance level was considered 0.05, test power as 95%, and effect size as 0.7; SPSS was used for all data analyses. Results: The present study data indicated that the strengthening exercise program on hip abductor muscles caused a significant decrease in pain (P=0.0001). The lower extremity function manifested a significant improvement in the experimental group after 8 weeks of strengthening exercise protocol (P=0.0001); it was durable even 3 months after the end of the exercise program. Conclusion: Hip abductor muscle strengthening, based on NSCA protocol, can be an effective approach in reducing pain and improving lower extremity function in elite distance runners with ITBS.

Purpose: Nowadays, the use of sports and famous athletes in advertising has become one of the most common advertising practices. Therefore, the purpose of this research was to investigate the ability of predicting the indices of attractiveness, expertise, and trustworthiness of the renowned sport endorser on the consumers' willingness to buy sporting and non-sporting goods. Method: This study was a quasi-experimental study on a sample of 150 students of sport science at Ferdowsi University of Iran. The statistical sample was divided into two homogeneous groups; for one month, one group watched the advertisements of an artificial sport product and the other group watched the advertisements of an artificial non-sport product endorsed by the famous sport personality on the telegram. Finally, the results were analyzed by completing standard questionnaires of purchase willingness (Zichkowski, 1985) and advertising celebrities (Ohanian, 1990) and simultaneous regression statistical methods. Results: The results showed that all three indices of attractiveness, expertise, and trustworthiness of the renowned sports endorser have high predictive power for the tendency to purchase sporting and non-sporting goods. Also in the sporting goods group, the expertise, and in the non-sporting goods group, the attractiveness had the highest predictive power of tendency to buy. On the other hand, there is a significant difference between the perception of the popular sport endorsing indices in advertising sporting and non-sporting goods. Conclusions: Through a promotional period for two endorsed sporting and non-sporting products, this study provides useful findings for product and service institutions to select and employ renowned athletes to endorse their products and influence consumers' purchase intention. In the text, the detailed descriptions of the expected results and discussions have been reported.

The aim of this study was to investigate the relationship between perfectionism and competitive anxiety of group and individual athletes.For this purpose,400 group and individual athletes who according to the coaches were or are able to participate in competitions were selected by stratified random sampling and the demographic characteristics questionnaire,perfectionism scale in the athlete Dan et al correlation results showed that in group athletes there was a positive and significant correlation between excessive worry about mistakes with competitive anxiety (r = 0.19),a positive and significant correlation between perceived coach pressure and competitive anxiety (= 0.24). r)and there is a positive and significant correlation between perfectionism and competitive anxiety (r = 0.26).But there was nosignificant correlation between personal standards and perceived parental pressure with competitive anxiety. Also,the correlation results showed that in individual athletes, there was a positive correlation between personal standards and competitive anxiety (r = 0.22),between excessive concern about Mistakes with competitive anxiety positive and significant correlation (r = 0.17),positive and significant correlation between perceived coach pressure with competitive anxiety (r=0.205) and positive and significant correlation between perfectionism with competitive anxiety (21 /0 = r) exists. But there was no significant correlation between perceived parental pressure and competitive anxiety.