Mohammad Hossein Zamani; Hamidreza Taheri Torbati; Aireza Saberi Kakhki; Majid Ghoshoni
Abstract
The purpose of this study was to investigate the effect of visual illusion on the learning of throwing skills in autism children. The research method was semi-experimental with repeated design and retention test. The statistical sample of this study was 33 children of 10 years old who were selected available ...
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The purpose of this study was to investigate the effect of visual illusion on the learning of throwing skills in autism children. The research method was semi-experimental with repeated design and retention test. The statistical sample of this study was 33 children of 10 years old who were selected available and were divided into three groups randomly: larger circle perceptions, smaller circle perceptions and control group. The tool used in this study was the Ebbinghaus illusion displayed on the ground and the beanbags for throwing from down to shoulder to goal. At first, the participants performed ten trials at the pre-test phase. Then, in the acquisition phase, 20 blocks completed 10 trials. 48 hours after the last session of the acquisition, a retention test was performed in 10 trials of the participant. To analyze the data, mixed analysis of variance analysis with repeated measures, one way analysis of variance and Tukey's follow-up were used. The results of this study showed that there was a significant difference between the groups both in the acquisition phase and in the retention phase between the groups, which this difference was in favor of the larger circle's perception group. Overall, the results of this study showed that a simple perceptual manipulation can increase motor learning in children with autism. Therefore, it is suggested to educators and sports practitioners to use this variable to improve their performance and improve their training sessions.
Mohammad Hossein Zamani; Hamidreza Taheri Torbati; Alireza Saberi Kakhki
Abstract
The aim of this study was to investigate the effect of visual illusion on the learning of a targeting motor skill in children. The research method was semi-experimental with repeated measurement design and retention test. The statistical sample consisted of 36 children (10 years old) who were selected ...
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The aim of this study was to investigate the effect of visual illusion on the learning of a targeting motor skill in children. The research method was semi-experimental with repeated measurement design and retention test. The statistical sample consisted of 36 children (10 years old) who were selected by convenience sampling method. They were divided into 3 groups: larger circle perception, smaller circle perception and control after the goal size had been estimated. The Ebbinghaus illusion displayed on the ground and the tennis ball to throw from top of the shoulder towards goal were used in this study. Firstly, the participants performed 10 trials at the pretest stage. Then, they performed six 10-trial blocks in the acquisition phase. 48 hours after the last acquisition session, a retention test was performed in 10 trials. To analyze the data, mixed analysis of variance with repeated measures, one-way analysis of variance and Tukey post hoc test were used. The results showed a significant difference among the groups both in the acquisition and retention phases and this difference was in favor of the smaller circle perception group. In general, the results of this study indicated the beneficial effect of visual illusion on learning a sport skill. Therefore, coaches and sport authorities are suggested to use this variable to improve performances and training sessions
Mohammad Hossein Zamani; Ayoub Hashemi; Rasool Abedanzadeh
Abstract
The aim of this study was to investigate the effect of feed forward augmented information in model observation on learning mini basketball free throw skill in children. For this purpose, 45 children (10 years old) were selected as the sample by convenience sampling method and were divided into three ...
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The aim of this study was to investigate the effect of feed forward augmented information in model observation on learning mini basketball free throw skill in children. For this purpose, 45 children (10 years old) were selected as the sample by convenience sampling method and were divided into three groups: feed forward augmented information + observation, observation + KR feedback, and control (C). The research method was semi-experimental and research design was pretest-posttest and retention test. The task used in this study was mini basketball free throw skill. Firstly, the participants performed 15 trials in the pretest. The acquisition phase consisted of 6 blocks of 15 trials of observation followed by physical training. The retention test was performed 48 hours after the last training block in 15 trials. The data were analyzed by mixed analysis of variance, between-group analysis of variance and Tukey post hoc test. The results showed that both at the acquisition and retention phases, feed forward augmented information + observation group who were knowledgeable about the quality of the model prior to the observation showed better performance than the other two groups (P<0.05). Generally, these results showed that knowledge of the model performance before observation can make learning of a throwing task more significant than the time when they were knowledgeable after the observation. Therefore, it is suggested that feed forward augmented information on the quality of the model before observation should be used to improve the performance of the subjects.
Mohamad Hossein Zamani; Mahdi Zarghami; Sedigheh Heidarinezhad
Abstract
Feedback is one of the most important variables that affects the performance of motor learning and the way of implementing skills and has an important role in motor control and motor skill acquisition. This study aimed at evaluating the acquisition and retention of new skills in children with autism ...
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Feedback is one of the most important variables that affects the performance of motor learning and the way of implementing skills and has an important role in motor control and motor skill acquisition. This study aimed at evaluating the acquisition and retention of new skills in children with autism in augmented feedbacks with various frequencies. Study method was semi-experimental and study design was pretest–posttest. The retention test was carried out with three feedback groups (0%, 50% and 100%). The study population consisted of 6-8-year-old male children with autism in Ahvaz city. 21 subjects were selected through available and purposive sampling method as the sample of the study and were randomly divided into three groups. The subjects' task was to throw a tennis ball over their shoulders towards a target drawn on the ground. In the acquisition phase, subjects threw 60 tennis balls. Group 0% did not receive any feedback, group 50% received feedback in half of their efforts and group 100% received feedback in all their efforts. 24 hours after the acquisition phase, retention test was performed in 10 trials. After checking the data normality and variance equality, data were analyzed by analysis of variance with repeated measures, ANOVA and Tukey post hoc test. The results showed a significant difference in the acquisition and retention stages among the three groups (P=0.001). Group 100% outperformed both in the acquisition and retention phases. It is generally suggested that in the skill learning process, children with autism benefit from augmented feedback with high frequency.
