فهرست مطالب جواد عظیمی راد

The purpose of the present study was to determine the relationship between parenting styles and sport participation of teenager girl students of Kermanshah City. 184 teenager students committed Family Environment and Sports Participation questionnaires. Data were analyzed through Pearson correlation coefficients and multiple regressions. The results showed that there were significant correlation between physical activity levels and authoritarian and permissive parenting styles، but there were no significant correlation between physical activity levels and authoritative and neglectful parenting styles. According to the research findings more support in parenting styles leads to more physical activity among female students.

The aim of this study was to determine motivational priorities of participation in wrestling among wrestlers (Greco-Roman and freestyle) in Kermanshah city. The statistical population consisted of 4612 wrestlers of Kermanshah city. 242 wrestlers in different age groups (99 adolescents، 56 juniors and 87 seniors) were selected as a sample with random sampling method. Personal information questionnaire and Gale participation motivation questionnaire were used to collect data and at the end of the training session، the questionnaires were completed. Friedman test، one-way analysis of variance and SPSS software version 13 were used to analyze data at significance level of 0. 05. Gaining success (7. 44 ranking)، energy depletion (6. 15 ranking) and meeting friends (4. 57 ranking) were the first priorities to participate in wrestling. There was no significant difference in motivation of participation among different age groups (P>0. 05). Results indicated that gaining success was the main factor of participation in wrestling in Kermanshah and there was no significant difference in the priority of motivational factors among different age groups and those groups with various wrestling participation records.

The aim of this study was comparison the effects of request feedback after good trials and poor trials in self-controlled environment. 30 students of ShahidBeheshti University participated in this study. The task required them to depress four keys (2, 4, 8, and 6) sequentially on the numeric keypad portion of the keyboard. The goal MTs for the 3 segments were 200, 400, and 300 ms (total MT: 900 ms) for the acquisition and retention phases. In the transfer phase, the goal segment times were 300, 600, and 450 ms (total MT: 1,350 ms). Thus, the relative timing (in all phases of the experiment was 22.2-44.4-33.3). Aafter the acquisition phase participants in regard to the filled questionnaire and compare the trials they request feedback or not, were assigned to good and poor trials group. To assess overall timing performance, the differences between the goal of overall MT and actual MT for each movement segment computed. Findings showed that there is no difference between request feedback after good trials and poor trials in acquisition, retention and transfer phases. These findings suggest that both, request feedback after good, or after poor trials leads to some beneficial effects on participants performance.