درخت حوزه‌های تخصصی

Background: The authors assessed the effect of bandwidth modeling in learning relative timing and absolute timing. Method: Participants were 10 male high school students who volunteered to participate in the experiment (M age = 16 years, SD = 0.942 years). None of the participants had prior experience with the task or was informed about the purpose of the experiment. They had to learn soccer chip shot under either a bandwidth (model delivered when participant’s performance was outside a predefined bandwidth or rang) or yoked (same number of model provided as bandwidth group) modeling procedure. Results: The results show that the bandwidth group was more effective in learning relative timing than the yoked group. Conclusions: It indicated that benefits of feedback frequency reduction is generalizable to observational learning context. The authors propose that this method may be an appropriate method for relative timing learning.

Objective : Football, as the most viewed event in stadiums overflowed with very many spectators, has turned into the most popular sport across the world. The purpose of this study was to compare the factors affecting the technical and ethical performance of professional football athletes off-field. Methodology : The research method of this research is descriptive survey implemented by completing a researcher-made questionnaire. The statistical population of the study included all athletes, referees, and coaches, members of the technical staffs and members of professional soccer clubs as well as members of the federation and football board of Tehran during the 18 th round of the country premier league. The research sample was 384 people who were selected by purposeful sampling method and according to Morgan table. The validity of the questionnaire was evaluated by the professors of physical education and football experts and the reliability level was calculated to be 0.89 based on the Cronbach's alpha that was done by Exploratory Factor Analysis and Friedman test by SPSS version 24 and Liserl 8.8 software. Results: The present study was surveyed on the basis of effective factors off-field, that is the most important factors off-field were federation and family and the status of the club were the least important factor in the technical and ethical performance of professional football athletes. Conclusions: Supervision and education can play an important role, and family as the first social unit can be also of importance in this respect. After family, the FFIRI should take basic measures for culture-building and detailed reflections on its activities.

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.