Morteza Pourazar; Fazollah Bagherzadeh; Davood Hoominian
Abstract
Introduction: Purpose of the present study was to investigate the effect of virtual reality training on proprioceptive function of elbow joint in hemiplegic children. methods: Twenty boys ranging from 7 to 12 years, from special schools in Tehran, were randomly divided into the experimental and ...
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Introduction: Purpose of the present study was to investigate the effect of virtual reality training on proprioceptive function of elbow joint in hemiplegic children. methods: Twenty boys ranging from 7 to 12 years, from special schools in Tehran, were randomly divided into the experimental and control groups. The devise used for virtual reality intervention was Xbox 360 Kinect (Microsoft, New York, and United State). Gyroscope device was used for measuring elbow’s joint position sense. Participants in the experimental group took part in the Virtual Reality (VR) program; participants in the control group continued their traditional therapy program. Paired sample t test and independent sample t test were used using SPSS software version 18 at p <0.05 level.Results: Results of independent sample t test showed that although a significant difference was no observed in joint position sense between the experimental and control groups during the pre-test phase (t=0.07, df=18, p=0.944); in the post-test phase, virtual training resulted in better scores for the experimental group (t=2.3, df = 18, p=0.03). Based on the results of paired sample t test, virtual training resulted in significant progress for joint position sense in the experimental group. Conclusion: Our results about using VR systems for patients with CP were in agreement with the findings by Denise Reid. VR intervention results in CP children could be justified by self-efficacy and motor learning theories. This type of therapy yields significant improvements for participants, since it lets them explore new experiences that would otherwise be difficult or dangerous.
Hamed Fahimi; Hassan Gharayagh zandi; Fazlallah Bagherzadeh; Ali Moghadamzadeh; Davood Homanian SharifAbadi
Abstract
Introduction: The purpose of the present study was to investigate the effect of strategic self-talk on the performance and visual attention of volleyball players.Methods: The current research was semi-experimental with a pre-test and post-test design with a control group. The participants of the present ...
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Introduction: The purpose of the present study was to investigate the effect of strategic self-talk on the performance and visual attention of volleyball players.Methods: The current research was semi-experimental with a pre-test and post-test design with a control group. The participants of the present study were 54 boy volleyball players, who selected as available. The participants randomly divided into five groups: Strategic self-tlk as instructional self-talk (N=10), motivational self-talk (N=11), instructional-motivational self-talk (N=10), motivational-instructional self-talk (N=11) and control (N=12). The self-talk intervention conducted for 12 weeks and three sessions per week. In pre-test and post-test, while performing the serve task, the serve score were recorded by the researcher and the gaze behavior of the participants was measured by the eye tracker. The collected data were analyzed using analysis of covariance and Bonferroni's post hoc test.Results: The results of the study showed that strategic self-talk has a significant effect on serve performance (P=0.0001) and the quiet eye duration (P=0.0001). The results of the Bonferroni test showed that instructional self-talk increased motor performance and increased the duration of the quiet eye. In addition, the combined groups that have used this instruction have increased motor performance and a longer duration of quiet eye. However, motivational self-talk has no effect on motor performance and the duration of quiet eye.Conclusion: The results obtained in the current research emphasize the importance of instructional self-talk on the performance and visual attention of novice volleyball players and supports the attention mechanism of self-talk.
samaneh nasr esfahani; davood hoomanian; samaneh Haji Hosseini
Abstract
Introduction: It is essential to become physically literate to develop movement skills, as the knowledge and motivation necessary to lead an active lifestyle. The aim of this study was to determine the validity and reliability of Canadian physical literacy knowledge and motivation questionnaires among ...
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Introduction: It is essential to become physically literate to develop movement skills, as the knowledge and motivation necessary to lead an active lifestyle. The aim of this study was to determine the validity and reliability of Canadian physical literacy knowledge and motivation questionnaires among 8-10-year-old children in Isfahan.Methods: These questionnaires were translated using the translation–back-translation methodology into Persian and adapted to the Iranian context. A Persian version of these questionnaires was evaluated for its psychometric properties by 384 students aged 8 to 10 in Isfahan city (Iran). The construct validity of the questionnaires was determined using exploratory and confirmatory factor analyses based on structural equation modeling, and the internal consistency was checked using Cronbach's alpha coefficient. The test-retest method determined the temporal reliability of the questionnaires.Results: Face validity was confirmed by five experts in the field of motor behavior. According to the obtained thresholds, the construct validity was acceptable based on the goodness of fit index. A Cronbach's alpha coefficient greater than 0.85 was obtained for the knowledge and motivation questionnaire as its dimensions. The test-retests within two weeks showed that the intragroup correlation coefficients for all five components were acceptable for both boys and girls.Conclusion: Based on the results, the Persian version of Canadian Physical Literacy Knowledge and Motivation Questionnaires for 8-10-year-old children had good validity and reliability. Therefore, it is appropriate to use these tools to measure the children's physical literacy in Isfahan city.
