Zahra Naghizadeh; Ahmadreza Movahedi; Mahdi Namazizadeh; Motahareh Mirdamadi
Abstract
The Effect of transcranial direct current stimulation (tDCS) has been studied in descriptive and laboratory tasks in the field of motor and sport skills. It is necessary that tDCS effects on real sport skills are investigated. The aim of the current study was to examine the Effect of tDCS on performance ...
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The Effect of transcranial direct current stimulation (tDCS) has been studied in descriptive and laboratory tasks in the field of motor and sport skills. It is necessary that tDCS effects on real sport skills are investigated. The aim of the current study was to examine the Effect of tDCS on performance of basketball two point field throws (BFT) in skilled basketball players. In this quasi- experimental study, we used a repeated measure design including a pretest, intervention, posttest and follow. A total of 26 male basketball players were randomly divided into either an experimental or a sham group. Both groups watched the point light model of the performance of two elite basketball players. Then, the participants of the exercise group received tDCS over their pre-motor cortex for 20 minutes. The participants of the sham group underwent identical tasks performance except that tDCS was artificially applied for them. BFT was assessed at baseline (pre-intervention), one day post-intervention and 7 days post-intervention. For analyzing data, two factor Mixed model ANOVA, independent and paired t-tests were used. Results showed that anodal tDCS created no between group's differences in BFT in the intervention phase while tDCS lead to significant improvement of BFT in experimental group skills compared to sham group in test phase. Results showed that tDCS could be considered as a useful intervention for the improvement of BFT in skilled basketball players.
Abolfazl Esmaili; Shila Safavi; Ahmadreza Movahedi
Abstract
The purpose of this study was to determine the effect of skill level on the performance of dribbling skills in soccer choking under pressure conditions. For this purpose, 20 skilled players of the university football team and twenty beginner students in football (with age range 18-25) participated in ...
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The purpose of this study was to determine the effect of skill level on the performance of dribbling skills in soccer choking under pressure conditions. For this purpose, 20 skilled players of the university football team and twenty beginner students in football (with age range 18-25) participated in the study. The Egilly soccer dribble skill test was performed in two stages: without pressure condition and combined pressure condition. In the present study, the combination of two types of pressure, competition between participants and camcorders were used to create pressure condition. In order to ensure that the pressure conditions were applied, the level of competitive anxiety was measured using the second version of the competitive state anxiety and the heart rate of the participants. To analyze the data, repeated measures analysis of variance was used for comparing the mean scores and independent t-test was used to compare the mean scores of two groups without pressure condition. The results showed that the performance of the skilled group, decrease under pressure conditions and the performance of the beginner group improved under pressure conditions. It is possible that the pressure conditions in the beginner group would increase the effort to perform better and thus improve performance. It can also be said that the motivational role of pressure conditions has improved performance in beginners. In skilled persons, they are also likely to engage in skill-centered mechanisms that give less skill to the source of attention which is empirically evident in verifying the explicit review theory.
Mohadeseh Mohammadi; Ahmadreza Movahedi; Hamid Salehi; Shila Safavi Homami
Abstract
Goal setting is a motivational item that is usually used for enhancing sport skills learning. The aim of the present study was to investigate the effect of easy versus difficult goals on acquisition and retention of basketball free throws in educable children with mental retardation (AWMR). A total ...
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Goal setting is a motivational item that is usually used for enhancing sport skills learning. The aim of the present study was to investigate the effect of easy versus difficult goals on acquisition and retention of basketball free throws in educable children with mental retardation (AWMR). A total of twenty one AWMR educable students (aged between 8 and 13) were assigned to either a difficult or easy goals group. Participants exercised the task for nine sessions across acquisition phase. Both groups performed a pretest before the acquisition sessions. Acquisition tests were taken during acquisition phase, and immediate and delayed retention tests were also taken after 2 and 10 days of no practice respectively. We performed statistical analyses with a repeated measures analysis of variance (ANOVA), and an independent t test. Results showed that easy goal setting group significantly improved their performance in acquisition and retention phases (P<0.05) while difficult goal setting group showed no improvement in their performance. These findings suggest that setting easy goals instead of difficult goals improves the performance of basketball free throws in children with mental retardation
Zahra Mollakarimi; Ahmadreza Movahedi; Sayyed Mohammad Marandi; Fatemeh Bahrami
Abstract
The main aim of the present study was to investigate the effect of Swiss ball training on the improvement of sensorimotor function in three boys with autism. In the present study, a single-subject method was used. Three autistic participants were required to exercise with Swiss ball for 9 weeks. ...
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The main aim of the present study was to investigate the effect of Swiss ball training on the improvement of sensorimotor function in three boys with autism. In the present study, a single-subject method was used. Three autistic participants were required to exercise with Swiss ball for 9 weeks. Changes in the scores of the sensorimotor function subtest were measured by NEPSY neuropsychological test during the intervention and two weeks after the intervention in one-week intervals. The subjects took the test again after two months. The results showed that the intervention considerably improved sensorimotor function of the three participants (PND=100% for the first participant and 77.78% for the second and the third participants). This reduction was found to be maintained two weeks after the intervention. These findings showed that Swiss ball training considerably improved sensorimotor function in boys with autism.
Ahmadreza Movahedi; Abbas Bahram; Sahar Bordbar
Abstract
The aim of the present study was to investigate the effect of different methods of self-talk (motivational, instructional, and combined) on acquisition and learning of a motor perceptional task (dart) and physical efficacy in female students aged between 13 and 18. 48 female students (mean age 15.46 ...
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The aim of the present study was to investigate the effect of different methods of self-talk (motivational, instructional, and combined) on acquisition and learning of a motor perceptional task (dart) and physical efficacy in female students aged between 13 and 18. 48 female students (mean age 15.46 yr) who were novice at dart throwing voluntarily participated in this study. Participants were divided into 4 groups including motivational self-talk, instructional self-talk, motivational-instructional self-talk and physical practice (12 students in each group) following an initial instructional session and pretest. The intervention included 10 sessions of acquisition, 2 sessions of retention test and one session of transfer test. One-way ANOVA and ANOVA with repeated measures were used to analyze data. Results showed that combined (motivational-instructional) and the instructional self-talk groups improved dart throwing performance in acquisition, immediate and delayed retention sessions in 13-18-year-old students compared with the motivational self-talk and physical exercise groups. Instructional self-talk group showed the best performance in transfer test while the other three groups showed almost similar performances. The results also showed that different interventions had no significant effects on physical self-efficacy of the participants.
Farideh Shafati; Ahmadreza Movahedi; Hamid Salehi
Abstract
Fundamental motor skills are key components of motor development and are divided into two main sub groups including fine and gross motor skills. The main purpose of the present study was to determine the effect of balance training with Swiss ball (BTWSB) on gross motor skill of Children with Attention ...
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Fundamental motor skills are key components of motor development and are divided into two main sub groups including fine and gross motor skills. The main purpose of the present study was to determine the effect of balance training with Swiss ball (BTWSB) on gross motor skill of Children with Attention Deficit – Hyperactivity Disorder. Participants of the present study were three 6 to 8 years old children with Combined type of Attention Deficit – Hyperactivity Disorder (ADHD-C). This study was a single-subject study with multiple baseline design. Participants were required to exercise BTWSB for 9 weeks. Change in the gross motor skill of participants was assessed at one-week intervals using multiple baseline method. We administered Conners Parent Rating Scale (2003) and Broininks – Oseretsky Test Of Motor Proficiency (1978) to assess each outcome variable. The results of the data chart analysis based on descriptive statistics and visual analysis showed that BTWSB improved gross motor skill of all three participants (PND = 100% for all three participants). The results of this study indicate a positive effect of BTWSB on improving gross motor skill of Children with Attention Deficit – Hyperactivity Disorder.
Maryam Nazari; Ahmadreza Movahedi; Shila Safavi Homami
Abstract
The main purpose of the present study was to investigate the effect of different combinations of music and rhythmic movements on behavioral problems of children with mild mental retardation. A total of 40 children with mild mental retardation were randomly divided into 4 variations of practice including: ...
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The main purpose of the present study was to investigate the effect of different combinations of music and rhythmic movements on behavioral problems of children with mild mental retardation. A total of 40 children with mild mental retardation were randomly divided into 4 variations of practice including: rhythmic movement with major scale music, rhythmic movement with minor scale music, rhythmic movement with no music, and no rhythmic movement-no music (control group). Rutter inventory (Parent version) was used to evaluate behavioral problems. Pretest was taken before the intervention and post-test was taken after 12 weeks of practice (36 sessions). For data analysis, one-way analysis of variance and Tuki follow up tests were used. Results showed that behavioral problems of rhythmic movement with major scale music group were significantly decreased. It was also shown that the rhythmic movement with minor scale music and rhythmic movement with no music showed no significant decrease on behavioral problems of mentally retarded children. No considerable change was found in behavioral problems of the participants of the control group.
Maryam Parvin; Ahmadreza Movahedi; Salar Faramarzi
Abstract
The present study examined the effect of juvenile physical plays on shyness of female primary school students. Participants were 33 female students aged between 9 and 11 who were randomly divided into experimental (n=18) and control (n=15) groups. The experimental group participated in selected juvenile ...
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The present study examined the effect of juvenile physical plays on shyness of female primary school students. Participants were 33 female students aged between 9 and 11 who were randomly divided into experimental (n=18) and control (n=15) groups. The experimental group participated in selected juvenile physical plays for 8 weeks, 2 sessions per week while the participants of the control group did not take part in any physical plays. Shyness of the participants was measured before and after the intervention. Children's Shyness Questionnaire (CSQ) (Crozier, 1995) was used to measure shyness. t test was applied for data analysis. Results showed that juvenile physical plays significantly improved shyness of the experimental group (P˂0.001) while no changes were observed in the shyness score of the control group. The findings suggested that officials of education should use juvenile physical plays as a proper intervention to improve shyness of elementary schools students
Fatima Bahrami; Ahmadreza Movahedi; Mohammad Marandi; Ahmad Abedi
Abstract
The aim of the present investigation was to determine the effect of two karate
techniques on the reduction in stereotypic behaviours in three 5-year-old boys with
autistic disorders. The study included three boys with autistic disorders. A singlesubject
method with A-B-A design was used. Participants ...
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The aim of the present investigation was to determine the effect of two karate
techniques on the reduction in stereotypic behaviours in three 5-year-old boys with
autistic disorders. The study included three boys with autistic disorders. A singlesubject
method with A-B-A design was used. Participants of the present study were
required to exercise two karate techniques (Zuki and Mae-Geri) for 12 weeks.
Changes in the severity of stereotypic behaviours were assessed by Gilliam Autism
Rating Scale (second edition) during intervention process and during one month
after intervention with one-week intervals. Results showed that with respect to
descriptive statistics and visual analytics, the karate techniques had an effect on all
three participants (PND=100% for first and third participants, PND=50% for the
second participant) and this reduction was maintained one month after the end of
the intervention. The findings of the present study indicated that teaching karate
techniques to autistic children dramatically decreased their stereotypic behaviours.