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Dr Shahram Nazari, Mr Mohammad Reza Soleymanzadeh, Mr Peyman Honarmand,
Volume 11, Issue 22 (12-2021)
Abstract
The purpose of the current study was to determine the effect of sport vision training on vision perception and decision making of handball referees. In this semi-experimental study, 30 handball referees were Participated among all the referees working in the Iranian Handball Premier League, then the selected referees divided into 2 sport vision training and control groups, randomly. The study included pre-test and post-test phases. Subsequently, participants completed Frastig vision perception test and made decisions after watching 30 prepared clips in pre-test phase. Afterwards, participants completed performing 8 weeks of determined sport vision training, each week included 3 sessions and each session lasted 45 minutes. Henceforth, the participants re-performed Frastig vision perception test and repeated decision making process after watching 30 determined clips. Finally, the collected data were analyzed by paired sample t-test and covariate statistical methods. The results indicated that sport vision training and decision making training significantly affected vision perception and decision making of handball referees. Therefore, the results suggest the utilization of vision perception and decision making training as an effective method in order to improve decision making and vision perception.
Saeed Nazari, Fatemeh Najafian, Shaheen Ramezani, Morteza Homayounnia Firouzjah, Farzaneh Barmaki,
Volume 13, Issue 26 (12-2023)
Abstract
The purpose of this study was the effect of visual illusions and focus of attention instructions on the performance and learning of the golf putt. A total of 48 students with an age range of 7-9 years were selected from the community in a targeted manner and randomly divided into four groups (large visual illusion with external focus of attention instruction, large visual illusion with internal focus of attention instruction, small visual illusion with external focus of attention instruction, small visual illusion internal focus of attention instruction) were allocated.The current research was conducted in five different phases of pre-test, acquisition, retention, transfer and dual task. results a mixed two-way analysis of variance (ANOVA) repeated measure, showed that in all phases, especially the dual task, the two groups of external focus of attention with large and small visual illusion performed better than other groups. These findings showed the importance of external attention and additive Effects of an External Focus and visual illusions in Learning a Motor Skill, which may be platform for encourages implicit learning mechanisms, it is recommended that physical education coaches use psychological variables (external focus of attention and visual illusions) in practicing golf putting skills.
Sara Bagheri, , ,
Volume 100, Issue 100 (10-2020)
Abstract
People need coordination to accomplish joint tasks and pursue the same goal. The aim of this study was to investigate the predictive mechanisms in interpersonal coordination among elite rope jumping players. The research strategy was descriptive and applied and the statistical community consisted of 24 elite rope jumping players (14 to 18 years old). Subjects practiced various rope jumping tasks (individual and joint rope jumping at the same or different distances with online landing) for eight weeks until they could do them properly and without online feedback. The researcher used a Vicon motion analysis device to record three-dimensional movements of players' feet and ropes whirling and examined spatial and temporal parameters. The results of independent t-test, repeated measures ANOVA and one-way ANOVA showed that people were similar each other in movement onset time, hand-foot deviation time, timing variation in rope whirling, and landing position (P> 0.05), while a significant difference was observed in their jump height and movement time. So, players simulate each other's movements to coordinate with each other in different tasks, and their efforts distribution doesn't related to task characteristics. In fact increasing difficulty as well demand of joint task, amount of interpersonal coordination and consequently prediction ability will increase.
Ms Soosan Taabodi, Dr Shahzad Tahmasebi Boroujeni, Dr Marjan Namjoo,
Volume 100, Issue 100 (10-2020)
Abstract
Previous research has indicated the effectiveness of parent-based and instructor-based interventions on children with developmental coordination disorder, but investigation of these two approaches in mentally retarded children has not been considered until. The purpose of this study was to compare the parent-based and instructor-based educational approach on motor proficiency and cognitive development of children aged 7 to 10 years with educable mentally retarded. 40 children with educable mental retardation in Jahrom city were selected by available sampling method and were divided into two experimental groups of parent-based (7.7±1.80) and instructor-based (8.10±0.91). In pre-test, participants performed a cognitive development test (my brain cognitive intervention software). After, all participants were tested motor proficiency (Bruininks Ozertsky) in school environment. The intervention for instructor-based group was done individually by the teacher in school and for the parent-based group, the intervention was done by parents at home. The intervention was performed for both experimental groups for 6 weeks and 3 sessions of 45 minutes each week. Analysis of variance was used to analyze the data. The results of data analysis showed that instructor-based exercises compared to parent-based exercises can improve motor proficiency, cognitive development (P≤0.05). Parent-based exercises can as well improve fine skills (P≤0.05).
