Esmaeil Nasiri; Ahmad Farokhi; Fazlollah Bagherzadeh
Abstract
The purpose of the present study was to examine the effects of self – control modeling , that is presenting moded to learner whenever they asked for it, on learning a timing task.Twenty four right handed subjects (12 males, 12 females, aged 19-20) voluntarily participated in the study and were ...
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The purpose of the present study was to examine the effects of self – control modeling , that is presenting moded to learner whenever they asked for it, on learning a timing task.Twenty four right handed subjects (12 males, 12 females, aged 19-20) voluntarily participated in the study and were assigned randomly to two groups of self – control and yoked.The task was pressing the keys number 1, 4, 5 and 8 on a sequential timing apparatus while keeping certain absolute timig. People in the self – control group received the model whenever they requested it, while subjects in the other group were yoked with self – control group. The experiment consisted of acquistion, retention and transfer phases and absolute timing error was used as dependent variable. Results of factorial ANOVA in acqistion phase showed that even through there were a significant decrement in two groups on absolute timing error (P<0.05), but there were no significant decrement in two groups on absolute timing error (P<0.05), but there were no significant difference between two groups in this changes (P>0.05).Results of retention test failed to show any significant difference between two groups (P>0.05). but in transfer test self – control group showed significantly less error than yoked (P<0.05). the results showed that benefitcial effects of self – control technique anc well generalized to modeling domain and make practice conditions more accordant with informational needs of learners.
Ali Akbar Jaberi Moghaddam; Ahmad Farokhi; Mostafa Khani
Abstract
Boxing is one of the organized high-contact sports that requires purposefulpunches to the head and body of the opponent in both amateur and professionallevels, so traumatic head injury in boxers isn’t impossible. In this type of injury,though intact cognitive functions, it is possible that total ...
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Boxing is one of the organized high-contact sports that requires purposefulpunches to the head and body of the opponent in both amateur and professionallevels, so traumatic head injury in boxers isn’t impossible. In this type of injury,though intact cognitive functions, it is possible that total cognitive beneficiarybecome impaired as a result of distractibility, imperfect concentration, andaftermath fatigue. Thus, purpose of this study was to investigate attentionaldisorders in amateur boxing. Subjects of the study were 30 male experiencedamateur boxers (more than 4 years background, age= 24±3.1) as experimentalgroup, and 30 male novice amateur boxers (less than 1 year background,age=25±4.2) and 30 male 400 and 800 meter runners (age= 24±2.7) as controlgroups. We used DAUF continuous attention test to assess attentional component.In order to data analyzing was used MANOVA in the significance level of 0.05.Findings showed that in none of variables there were significant differencebetween groups (P>0.05), meaning that amateur boxing periods even longer than4 years doesn't lead to attentional disorders. Based on our findings, it is concludedthat intensity of punches in amateur boxing doesn't reach to threshold that lead tobrain damage at least in regions which control visual attention.
Fatemeh Rezaee; Ahmad Farrokhi; fazlollah Bagherzadeh
Abstract
The aim of this study was to determine the effect of motivational self-talk as one
of the psychological strategies. Motivational self-talk is a type of self-talk that
appears to improve performance and control arousal level through increased drive
and effort and positive motivation in performance. ...
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The aim of this study was to determine the effect of motivational self-talk as one
of the psychological strategies. Motivational self-talk is a type of self-talk that
appears to improve performance and control arousal level through increased drive
and effort and positive motivation in performance. This study tried to investigate
the effect of motivational self-talk on performance of simple and complex skills.
Using a quasi-experimental method, 42 physical education students (20-25 years
old who had passed basketball 1 and 2 units) were selected to participate in this
study. Then, they were randomly divided into two equal groups (experimental and
control) and completed a 15-minute warm-up and task practice. Firstly, the
subjects performed a pre-test (without self-talk) including basketball passing test
(AAHPERD, 1996) as simple skill and basketball passing test (AAHPERD, 1984)
as complex skill. Then, the participants performed a post-test using self-talk with
the above tests. Statistical analysis was performed using independent t test and
paired sample t test by SPSS 11.5 at ??0.05. The results showed no significant
difference between experimental and control groups in pre-test in the performance
of simple (P=0.703) and complex (P=0.512) skills so both group were at the same
level of performance. Motivational self-talk improved the simple skill in the
experimental group (P=0.001). A significant difference (in favour of experimental
group) was observed in the improvement of the simple skill in the post-test of both
groups (P=0.004). Also, motivational self-talk improved the performance of
complex skill in the experimental group (P=0.001). A significant difference (in
favour of experimental group) was observed in the improvement of the complex
skill in the post-test of both groups (P=0.048). The mean difference in the simple
task (? x =0.94) and in the complex task (? x =0.48) between the two groups showed that
the mean difference of simple skill was higher than the complex skill. Generally,
the results showed that motivational self-talk improve the performance of both
skills while it influenced simple skill more than complex skill.
Alireza Farrar; Mostafa Khani; Aliakbar Jaberi Moghaddam; Ahmad Farokhi; Kimiya Sadri
Abstract
It is necessary to understand the effective factors in participation in physical activity in order to increase this activity in school students. The aim of the present study was to compare the level of physical activity between field dependent/ independent students in guidance schools of Kharame city ...
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It is necessary to understand the effective factors in participation in physical activity in order to increase this activity in school students. The aim of the present study was to compare the level of physical activity between field dependent/ independent students in guidance schools of Kharame city of Fars province. At first 150 male students were randomly selected and after Frame and Rod test, 100 subjects were divided into two groups: field dependent group (mean age of 12.82±0.96 years, height 155.9±6.65 cm, weight 47.5±12.27 Kg) and field independent group (mean age of 13.32±0.89 years, height 158.1±8.61 cm, weight 51±15.74 Kg). Frame and Rod test was used to measure dependence and independence and Self-assessed Physical Activity Checklist was used to evaluate physical activity. Kolmogorov-Smirnov test was used to check the normality of the data. Independent t test was used for statistical analysis in SPSS Version 17 (?=0.05). There was a significant difference in duration of physical activity between students with field dependent/independent cognitive styles (p=0.000). There was a significant difference in duration of moderate to burst physical activity between students with field dependent/independent cognitive styles (p=0.018). There was a significant difference in MET scores between students with field dependent/independent cognitive styles (p=0.000). There was a significant difference in MET of moderate to burst physical activity between students with field dependent/independent cognitive styles (p=0.012). The results of this study showed that students with field independent cognitive styles had more physical activity and energy expenditure than field independent students. It was concluded that the field dependent students may have more motor impairments and this claim needs more studies to be approved. Moreover, since cognitive style, as one of the variables which are the result of the interaction between the environment and individual and can be changed and developed, can be interfered, it is suggested that cognitive styles of the students change and encourage them in physical activity and healthier life through educational strategies.
Mahvash Nourbakhsh; Ahmad Farokhi; Saiede Khakpour; Homayon Farahani
Volume 2, Issue 2 , July 2010
Abstract
The purpose of this study was to investigate and compare the participation motives of male and female older adults for sport activities. The subjects were 241 persons (121 men and 120 women ranged from 60 to 89 years old, M = 66.16, SD = 6.66) who were selected from 5 districts of Tehran by relative ...
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The purpose of this study was to investigate and compare the participation motives of male and female older adults for sport activities. The subjects were 241 persons (121 men and 120 women ranged from 60 to 89 years old, M = 66.16, SD = 6.66) who were selected from 5 districts of Tehran by relative portion method. Data were collected using demographic questionnaire and participation motivation questionnaire for older adults (PMQOA). The descriptive statistics, Friedman test and one-way analysis of variance (ANOVA) were used to describe variables and to test the research hypotheses. Results indicated significant differences in the priority of different factors of participation motives (X2 = 556.4, P=0.00); and fitness motive was the most important reason for sport participation in older adults. There were significant differences between men and women in “medical” and “reputation” factors (P
Shahzad Tahmasbi; Ahmad Farokhi; Naser Naghdi; Fazlolah Bagherzade; Anoushirvan Kazemnejad; Mehdi Shahbazi
Volume 1, Issue 2 , October 2009, , Pages 21-46
Abstract
The purpose of this study was to evaluate the effect of two regimes during rats' gestation and lactation on learning, memory and motor function of their offspring. For this purpose, female rats (Albino-Wistar) were obtained from Pasteur Institute, Iran. After mating, 12 pregnant rats were divided into ...
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The purpose of this study was to evaluate the effect of two regimes during rats' gestation and lactation on learning, memory and motor function of their offspring. For this purpose, female rats (Albino-Wistar) were obtained from Pasteur Institute, Iran. After mating, 12 pregnant rats were divided into three groups and they had their special regimes during their last week of pregnancy as well as their lactation. Control group used a standard diet, the zinc deficient (ZnD) group a diet deficient in zinc and the zinc supplement (ZnS) group a standard diet and enhanced zinc (10ppm) in their drinking water. 12 male offspring in each group were selected as the statistical sample and they were tested for learning and memory in MWM on their 56th natal day (ND) and were tested for motor activity in open-field on their 66th natal day. One-way ANOVA, post hoc Tukey test and repeated measures ANOVA were used to analyze the data (P
Shida Ehsani; Elahe Arabameri; Ahmad Farokhi; Rasoul Zeydabadi
Volume 1, Issue 2 , October 2009, , Pages 87-102
Abstract
The purpose of the present study was to investigate the effect of self-controlled (SC) and instructor-controlled (IC) feedbacks on the acquisition of dart motor skill using videotape feedback. For this purpose, 200 female volunteer students of University of Tehran participated in this research. After ...
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The purpose of the present study was to investigate the effect of self-controlled (SC) and instructor-controlled (IC) feedbacks on the acquisition of dart motor skill using videotape feedback. For this purpose, 200 female volunteer students of University of Tehran participated in this research. After the questioners had been filled out, 36 individuals were randomly selected from 152 qualified participants. After a 10-trial pretest, they were divided into three groups: SC, IC, and Yoked group. The SC group received videotape feedback whenever they asked for it; the IC group after 5 trails, and the yoked group at the points that SF group received it. All the groups were videotaped. Practice phase consisted of 100 trials including 10 10-trail blocks. Retention and transfer tests were carried out 48 hours later. Foe data analysis, one-way ANOVA, repeated measures and Tukey test were used and EXCEL software was used to draw the plots. The results showed that the type of feedback had a significant effect on the form and accuracy of dart motor skill in acquisition, retention and transfer (P
Mehdi Shahbazi; Mahmud Sheikh; Naser Naghdi; A Farokhi; Anoushirvan Kazem nejad; Shazad Tahmasbi
Volume 1, Issue 1 , July 2009, , Pages 5-25
Abstract
The purpose of this research was to determine the effect of two kinds of diet (zinc deficiency and iron deficiency) on some anthropometrical indexes (body weight and crown-rump length), brain growth and motor function in young rats. Adult male and female albino wistar rats were obtained from the breeding ...
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The purpose of this research was to determine the effect of two kinds of diet (zinc deficiency and iron deficiency) on some anthropometrical indexes (body weight and crown-rump length), brain growth and motor function in young rats. Adult male and female albino wistar rats were obtained from the breeding colony of Pasteur Institute, Iran. The female albino rats were mated with normal male rats. After delivery, 40 male rats per group were selected. In order to measure physical and brain growth a special caliper (0.01 mm) and electronic balances (0.0001 g) were used. The instruments for motor function evaluation were Morris Water Maze and Open Field Arena. The data were analyzed by one-way ANOVA and post-hoc analyses were carried out by Tukey’s test (P?0.05). There were significant effects of iron and zinc deficiency on serum iron and zinc level. The results showed that serum iron and zinc concentration after the diet (contrary to the condition before diet) in ZnD and FeD groups were significant. There was a significant difference in some anthropometrical indexes (body weight, crown-rump length) and motor function between ZnD, FeD and control groups but there was no significant difference in brain weight between ZnD, FeD and control groups. The results of this study suggest that sufficient zinc and iron affect motor function as well as physical and brain growth.
