https://jmlm.ut.ac.ir/ Journal of Motor Learning and Movement en daily 1 Sat, 22 May 2021 00:00:00 +0430 Sat, 22 May 2021 00:00:00 +0430 https://jmlm.ut.ac.ir/article_82121.html Self-talk is one of the psychological factors influencing the improvement and success of motor performance. The present research aimed to investigate the effect of motivational self-talk on bimanual coordination of university students. 24 students of physical education (12 females and 12 males, mean age = 22.62 and SD = 2.081) were selected by convenience sampling method. After the pretest, subjects were divided into two homogeneous groups of motivational self-talk and no self-talk using bimanual coordination tester. For data analysis, descriptive and inferential statistics including independent t test and paired t test were used at 0.05 significance level. Results showed that self-talk improved the coordination performance significantly (p < 0.05). Also, the female group had a significantly better precision in bimanual coordination (p < 0.05) and the male group had a significantly better speed in bimanual coordination (p < 0.05). But, there was a significant difference between boys and girls in self-talk group in the posttest (p < 0.05). According to these findings, it is suggested that motivational self-talk should be used to improve and promote bimanual coordination performance. https://jmlm.ut.ac.ir/article_82122.html This study aimed to investigate the effects of peripheral and central fatigues on depth perception error in students. The statistical population consisted of students in Khodabande city. 42 subjects (mean age of 16.88 ± 0.49 years) were selected by convenience sampling method. All subjects took depth perception pretest. Then, they were divided into the intervention and control groups. To produce peripheral fatigue (physical), the first group received physical fitness activity and the second group received mental activity to produce central (mental) fatigue. The third group did not perform any activity during the intervention period. The depth perception posttest was performed after the fatigue intervention. The results of one-way analysis of variance showed no significant differences in the pretest among the groups, but there was a significant difference in the posttest among the groups. LSD post hoc test results showed that central fatigue increased depth perception error in comparison with peripheral fatigue and no intervention (control group). But no significant differences were observed in depth perception error between peripheral fatigue and control groups. Paired t test results showed an increase in depth perception errors resulted from both types of fatigue and the lack of change in the control group. Overall, it can be concluded that central fatigue had an effective role in increasing students' depth perception error when compared to peripheral error. Therefore, coaches are advised to adopt appropriate conditions that reduce central fatigue. https://jmlm.ut.ac.ir/article_82123.html The aim of this study was to investigate the relationship between coping strategies and metamotivation dominance in academic elite athletes based on reversal theory. 124 athletes who were the members of university sport teams participated in this study by convenience sampling method. In this study, Telic Dominance Scale was used to measure and determine metamotivation dominance and the Persian version of coping strategies questionnaire was utilized to assess athletes’ coping strategies. The results of K-S test showed that the data distribution was not normal; so data were analyzed by Spearman correlation coefficient and U Mann-Whitney test. The results of correlation test showed a negative and significant relationship between activity orientation coping strategies and Telic dominance and a positive and significant relationship between emotion orientation strategies and Telic dominance. Also, the results of U Mann-Whitney test showed that those with Telic used more emotion orientation strategies while those with Paratelic used more activity orientation strategies. Consequently, it is recommended that coaches should identify athletes’ metamotivation dominance to use appropriate coping strategies. https://jmlm.ut.ac.ir/article_82124.html One of the key factors for success in sport competitions is the ability to predict the movements of an opponent before performing them. The aim of the present study was to determine the effect of choking under pressure on predictive performance and to compare it between elite and novice fencers. In this quasi-experimental study, the subjects included 15 elite athletes of the youth fencing national team (16-20 years old) and 15 students from University of Tehran (18-22 years old) as novice athletes who were assigned to two groups by convenience sampling method. Prior to the test, 15 clips out of 100 video clips of different attacks on different parts of the fencers' body were performed and recorded by two professional members of the Iran National Fencing Team. After each video clip was stopped (before the sword hit the opponent's body), an answer sheet appeared on the screen and the subjects had to predict the location where the sword hit the opponent. The present study was conducted under high and normal pressure conditions. The high pressure condition was applied by the presence of a national team coach as the evaluator and in the non-pressure condition, the efforts were made without the presence of the evaluator. The results of mixed factor analysis of variance showed that the main effect of condition and group was significant but the interactive effect of condition and group was not significant. Bonferroni post hoc test results also showed that those players who were in normal condition had better predictive performance than those who were under the pressure condition; also, elite players had better predictive performance than novices in both conditions (P<0.05). But generally, choking under pressure decreases predictive performance in both elite and novice fencers. https://jmlm.ut.ac.ir/article_79286.html The aim of this study was to compare motor skills and body mass index of male students (7 to 10 years old) with and without internet addiction. Participants included 150 students with internet addiction and 150 students without internet addiction. After their parents filled out the consent forms and the students' personal information was recorded, the groups firstly were identified by the Kimberly Young Internet Addiction Questionnaire. Body mass index of participants were recorded by stadiometer and scale, and then their motor skills were assessed by the Bruininks - Oseretsky test. To classify the data, measures of central tendency and dispersion in the descriptive statistics were used. To analyze the data, the Kolmogorov-Smirnov test and independent t test were used in the inferential statistics. All research analysis was investigated at the significance level (P<0.05). The results showed significant differences in gross and fine motor skills, motor proficiency as well as body mass index between students with and without internet addiction, that is to say children with internet addiction showed poorer performance in gross and fine motor skills and motor proficiency. Also, they had more body mass index. Internet addiction may be accompanied with obesity and poor performance in gross motor skills. Therefore, it is recommended that the necessary steps should be taken to prevent these problems. https://jmlm.ut.ac.ir/article_81095.html Given the importance of preparation to respond to two stimuli in different sport conditions, the aim of this study was to investigate the effect of foreperiod and time intervals between two stimuli on psychological refractory period (PRP) in athletes. This study was semi-experimental with a within-group design and fundamental-applied in terms of objectives. 50 male athlete students of Shahid Chamran University of Ahvaz (age range 22.47±1.45 years) were selected by convenience sampling method. A five-core processor ASUS notebook, Edinburgh Handedness Questionnaire, software and hardware to measure the psychological refractory period were used in this study. Participants responded to two visual (selective) stimuli that were presented with short time intervals as quickly as possible. Tests were conducted in dual tasks and single tasks in foreperiods of 1,2,4,8 s and time intervals of 100, 250, 500, 800 ms randomly. The data were analyzed using mean, standard deviation, within group analysis of variance at significance level (P<0.05). The results showed that the effects of foreperiod and the stimuli intervals were significant. The foreperiod of 1s and interval of 100 ms had the most psychological refractory period and foreperiod of 8s and interval of 800 ms had the lowest psychological refractory period. This study showed that the pattern of psychological refractory period was affected by experimental manipulation of the preparation processes when recognizing the stages of information processing. Contrary to the common belief that preparation time operates on premotor processes, in the present study preparation time operates on late motion processes and confirms the existence of processing bottlenecks in dual tasks https://jmlm.ut.ac.ir/article_80608.html Mental fatigue is a psychological state caused by prolonged periods of cognitive activity and decreases physical performance, but its impact on motor learning has been less studied. The aim of this study was to investigate the effect of self-controlled feedback on learning to produce low, medium and maximum forces in mental fatigue condition. Participants consisted of 28 eligible volunteers who were randomly divided into two groups of self-controlled feedback and yoked. Electrical dynamometer, Stroop test, multidimensional fatigue inventory and the VAS scale were used in this study. Both groups firstly performed the Stroop test for one hour under mental fatigue protocol and they entered the acquisition phase of force production task after making sure that mental fatigue was created. Immediate and delayed retention tests were performed 10 minutes and 48 hours after the end of the acquisition phase respectively. Findings showed that in mental fatigue condition, there was no significant difference between self-controlled feedback and yoked groups in acquisition and retention of different forces. Also, the error produced in learning the medium force was less than those in learning the low and maximum forces in the mental fatigue condition, that is to say the learning of the medium force was significantly better than the low force. The results showed that mental fatigue reduces the effectiveness of self-controlled feedback and destroys learning to produce low and maximum forces more than medium force. https://jmlm.ut.ac.ir/article_81094.html The aim of this study was to investigate the effect of two instructional approaches (game based and traditional) on physical activity, self-determined motivation and physical activity enjoyment in university students who participated in physical education classes. This study was semi-experimental. The participants included 30 male university students (mean age 20.67±1.72 years) who were selected by convenience sampling method and randomly divided into two groups: game based instruction and traditional instruction. They participated in 18 sessions (for 6 weeks and 3 sessions a week) of basketball. The data were collected by the System for Observing Fitness Instruction Time, Beurer pedometer, Intrinsic Motivation Inventory, and Self-Determination Questionnaire. Descriptive statistics, independent t test, ANCOVA, and RANCOVA were used for analysis of data. The results showed significant differences between game based and traditional groups in the duration of moderate to high intensity physical activity and the number of steps (P≤0.001). There were no significant differences in physical activity enjoyment and a sense of competence between game based and traditional groups; But there were significant differences between two groups in autonomy (P≤0.001) and belonging (P≤0.013).The results showed that game based instructional approach can enhance physical activity level and quality of motivation of university students in physical education classes.  https://jmlm.ut.ac.ir/article_78674.html The aim of this study was to evaluate the effect of a selected training program and neurofeedback and combined method on attention and impulsivity in children with ADHD. total of 48 children 7-11 years with ADHD were selected from Psychology Clinic in Tehran and randomly divided into four groups control . Symptoms of attention deficit / hyperactivity disorder had been diagnosed by a psychiatrist over the past month based on DSM-IV criteria. The three experimental groups performed neurofeedback training, selected exercises and combined exercises (neurofeedback training and selected exercises) for 24 sessions and 60 minutes each session, respectively; But the control group did not receive any intervention. Connors’ parent questionnaire was used to assess hyperactivity / attention deficit in children and analysis of covariance was used to analyze the data. The results showed that between the adjusted mean of attention and impulsivity of children in neurofeedback and control training groups (p = 0.001) (in favor of neurofeedback), combination and control groups (p = 0.001) (in favor of combination), neurofeedback training groups And training program (p = 0.001) (in favor of neurofeedback), neurofeedback and combination training groups (p = 0.001), (in favor of combination), and training and combination program groups (p = 0.001) (to Combined benefit), there is a significant difference in improving attention and impulsivity. But there was no significant difference between the exercise and control program groups in reducing inattention with (p = 0.224) and between the exercise and control program groups in reducing impulsivity (p = 0.232). https://jmlm.ut.ac.ir/article_79451.html The purpose of this study is to examine the effects of sensory integration therapy approach on fine motor skills in children of age 5 through 10 with spastic cerebral palsy. In this semi experimental study, 18 children through available sampling method were chosen and randomly divided into two groups of 9 members experimental and control. First, they were pretested with test of bruininks-oseretsky test of motor proficiency. Then experimental group of sensory integration practices for 5 weeks three times a week. During the execution of the program, the control group did their usual activities. After the end of the program, both groups were post tested and analyzed. Data analysis was performed using multivariate and ANOVA. Results showed sensory integration approach had a positive effect on fine motor skills (p<0/01). So according to the results of this research can be deduced sensory integration practices programs can fine motor skills in children with spastic cerebral palsy improve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . https://jmlm.ut.ac.ir/article_83151.html AbstractConsidering the effect that aerobic exercise can have on cognitive function and memory, the challenge that remains in research is how to schedule timing of these exercises in relation to the acquisition sessions. This study is looking at the question of how aerobic exercise before, during and after acquisition affects the process of consolidating verbal memory. In a semi-experimental design, 48 non-athlete girls aged 20 to 30 years in four groups with different timing (Pre-training, during-training and post-training and control) performed a combination of Ray auditory verbal learning task and 15 minutes of moderate-intensity physical activity. Then, all groups participated in the retention test of memory task one and 24 hours later. The results showed that there was no significant difference between the groups in the trend of changes in the acquisition stage. In addition, the groups performed the same in retention tests. The only difference was observed in the rate of performance decline in the first retention test relative to the end-of-acquisition session, according to which, the control and pre-training groups had a significant decline in performance. Accordingly, it seems that physical exercise during and after acquisition session can have short-term positive effects on verbal memory, although more research is needed to conclude about the effects of timing.Key Words: Aerobic Exercise, Memory Consolidation, Training Timing, Auditory verbal learning, Acquisition https://jmlm.ut.ac.ir/article_83220.html The mathematical learning disorder is one of the most common learning disorders in schools that occurs due to inadequate concentration and poor memory or lack of coordination of motor proficiency in students. Mathematical learning disorder may be due to difficulty concentrating, memory problems or a lack of complete coordination of body movements. In this study, the effect of motor games in comparison to computer games on the executive, academic functions, and motor proficiency in students with mathematical learning disorder was investigated. In this study, 20 female students with math learning disabilities ranging in age from 8 to 9 years were divided into two balanced groups (n = 10) based on K Matt's mathematical score. Subjects in the first experimental group performed motor games for 8 weeks, 3 sessions of 45 minutes per week, and the second experimental group performed computer games during the same period. Mathematical tests of Key math (To diagnose and evaluate academic performance), Bruininksoseretsky, Stroop, and N-back in the pre-test and post-test stages were used to collect data. The results of this study have clearly shown that computer games compared to movement games had a greater effect on the executive functions and academic performance of students with a mathematical learning disorder. In contrast, it has been observed that the motor games were more effective on the motor proficiency of these students.