Motor Development and Learning
Mahdi Rahzani; Jalil Moradi
Abstract
Introduction: Vision is one of the most important senses in learning motor skills and in this regard the role of visual illusion is very important, therefore this research was conducted with the aim of investigating the effect of visual illusion on learning dart throwing skills in beginners.
Methods:The ...
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Introduction: Vision is one of the most important senses in learning motor skills and in this regard the role of visual illusion is very important, therefore this research was conducted with the aim of investigating the effect of visual illusion on learning dart throwing skills in beginners.
Methods:The participants included 20 teenagers with an average age of 17 years, who were selected as convenience sampling from the community of secondary school students. After the pre-test, the participants were divided into two experimental groups (modified darts with visual illusion)and control (normal darts). Both groups did 10 training sessions. Immediately after the practice sessions, the post-test and two hours after the post-test, the immediate retention and transfer tests and a week later, the delayed retention and transfer tests were held. For data analysis, Mixed design analysis of variance and Bonferroni's post hoc test were used.
Results: The results showed that in both the experimental and control groups, a significant improvement was observed in the performance of darts skills from the pre-test to the post-test(p < 0.05). However, the comparison between the experimental and control groups showed that there is no significant difference between the two groups in all stages of acquisition, retention and transfer.
Conclusion: In general, the results showed that the bigger perception of the target does not affect the performance and learning of darts skills and probably does not affect the motor control system. It is suggested to investigate the effect of visual illusion in new conditions in future researches.
Ali Shafizadeh
Abstract
The present study investigated the prediction of the effect and contribution of developmental and skills factors related to talent identification before football education on 10-12-year-old adolescents’ skill performance after 8 educational sessions. The statistical population inclued all ...
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The present study investigated the prediction of the effect and contribution of developmental and skills factors related to talent identification before football education on 10-12-year-old adolescents’ skill performance after 8 educational sessions. The statistical population inclued all certified football schools in Isfshan city and finally 16 schools cooperated with the researcher. The sample included 171 male adolescents (mean±SD: age 11.01±0.79 year, height 141±7.8 cm, weight 34.03 ±7.5 kg) and 4 subjects were selected from each age group of each football school by simple random sampling method. The participants' skill performance including running with the ball, turning with the ball, dribbling and speed of running were assessed by football talent identification tests derived from the Football Association of England before and after 8 sessions of football education. Reliability of these tests were 90% and their validity was 85%. Descriptive statistics and multivariate stepwise regression analysis were used in this study. Data analysis revealed 4 models to predict adolescents’ skill performance after 8 sessions of football education according to the pretests. Finally, the perfect model predicted 59.4% of variability of the critria.
