جستجوی مقالات مرتبط با کلیدواژه « عملکرد حرکتی » در نشریات گروه « تربیت بدنی »

The aim of this study was to investigate the effect of eight weeks' water exercise on error landing and motor performance in male athletes disposed to injury. For this purpose, 20 male athletes were at risk of injury in two groups of 10 experimental and control groups. Before and after the exercise protocol, all subjects were tested to evaluate the dependent variables. In order to study the functional indices, side to side test, figure eight hope test, triple hope test and LESS error test system were used to evaluate the landfall error. In order to analyze the data, paired t-test was used to study the difference between groups in order to investigate the difference between groups as well as independent t-test. The results of statistical analysis showed that selected exercises in water improve performance indicators and also improve the landfall error in male athletes who are prone to lower limb injury. Therefore, it is recommended to use the exercises used in this study to work with other training methods in order to improve the landing error rate and reduce the amount of damage in those who are prone to lower limb injury.

The purpose of this study was to compare the effect of different mental and physical training methods on the motor function of girls and boys.

This study was quasi-experimental research. The statistical sample consisted of 80 male and female students of Boshruyeh City in equal numbers and with a mean age of 14±0.9 years old who were randomly assigned into four groups of 20 participants (Physical Training, Traditional Imagery, PETTLEP, and Control groups). The participants took part in the pre-test and then practiced for six weeks. After training, they participated in the acquisition test To analyze the data, one-way analysis of variance, two-way repeated measures analysis of variance, and LSD post hoc tests were used. A significance level of 0.05 was considered.

The results showed that there is a significant difference in motor function between boys and girls based on the different training methods. The motor function of both genders has improved significantly in the Physical Training and PETTLEP groups. Also, the level of motor function of girls and boys was significantly better in the PETTLEP group than in other groups. In addition, Boys in PETTLEP have better motor function than girls.

The findings of the study highlight the importance and necessity of paying attention to the methods of physical training and PETTLEP in improving the motor function of students according to their gender. An increase in the motor function of students can be expected especially for boys, by adding the PETTLEP in their training plan.

The Purpose of the current study was to examine the effect of a progressive relaxation training period on muscle efficiency and performance of archery athletes. ‎

In this semi-experimental study, which was conducted with a pre-test-post-test design with a control group, 40 male archery athletes were randomly selected and placed in two groups of relaxation and control exercises. In the pre-test stage, the participants made 9 archery throws, during which the electrical activity was recorded using an electromyography device. According to the method proposed in the methodology of the research, the training phase of progressive relaxation was done in six weeks and three sessions each week and each session lasted 30 minutes. After the training phase, the post-test phase was conducted, where the participants performed 9 archery throws, as in the pre-test phase, during which the electrical activity was recorded using an electromyography device. The data was analyzed by univariate covariance analysis.‎

The results indicated that progressive relaxation intervention on performance (P<0.05), the electrical activity of biceps muscle (P<0.05) and triceps muscle electrical activity (P<0.05) has a significant effect.‎

In general, the results of the present study emphasize the importance of a progressive relaxation program on muscle efficiency and archery performance.

There is a relationship between myostatin gene expression and muscle strength as well as factors related to athletes' fitness. Therefore, the aim of the present study was to compare the effect of traditional resistance training and suspension-resistance training on serum levels of myostatin and the results of wrestlers' motor performance tests. The present study is a quasi-experimental study with pre-test-post-test design. Thirty wrestlers were selected and randomly divided into 3 groups: control, traditional resistance training and suspension-resistance training. Serum levels of myostatin, muscle strength, speed, power and agility were respectively assessed by Fasting blood sampling, Chest press maximal repetition test, 15 yards speed test, Sargent jump and T Agility tests. At the end of the pre-test stage, each training group performed their respective exercises for 8 weeks, 3 sessions per week and each training session for 30-45 minutes. At the end of 8 weeks of training, all the tests performed in the pre-test stage were repeated in the post-test stage. One-way analysis of variance and Bonferroni post hoc test were used for statistical analysis of research findings.The results of one-way analysis of variance and Bonferroni post hoc tests showed that in the post-test stage, there was no significant difference between the means of all the studied variables in the traditional resistance group with the suspension-resistance group (P> 0.05); However, there is a significant difference between the average of the studied variables in the control group and the two training groups in the post-test stage (P≤0.05). According to the results of the present study, both traditional resistance training and suspension-resistance training reduce serum levels of myostatin and by increasing muscle strength can be used as an approach to improve the motor performance of freestyle wrestlers.

One of the complications resulting from it is the most serious and common problems related to the aging process, which is a prelude to the health, performance and independence of the elderly. The purpose of this research was to compare two methods of exercise at home and trainer-oriented exercise on motor performance related to falls in inactive elderly women.

45 inactive elderly women were randomly divided into three groups of 15 people to exercise at home (67.2±15.93 years), coach-oriented training (67.5 ± 80.89 years), and control group (65.6±63.54 years) were divided. The variables of lower limb muscle strength, flexibility, Static and dynamic balance, agility, maximum walking speed, 10-meter hurdle walk and fear of falling were evaluated in the pre-test and post-test. Two experimental groups performed sports exercises with the aim of increasing the subjects' balance for 10 weeks. Data analysis was performed using paired t-tests and ANOVA at a significance level of P≥0.05.

The results of the pre-test showed that there was no significant difference between the research variables between the three groups. The results of the post-test showed that both training at home and trainer-oriented training had a significant effect on all movement performance variables. Also, there was a significant difference in the post-test of flexibility, agility and static balance indicators between the home training group and the trainer-oriented group, so that these factors were better in the trainer-oriented group than the home training group.

According to the results, elderly women can use both home and coach-based exercise programs to improve movement performance related to falls. But in certain circumstances, you can use the method of training at home as an alternative method.

The present study aimed to evaluate the effect of teaching games for understanding approach (TGfU) on aerobic endurance, enhancing motor performance and promoting physical activity. To this end, the ten-year-old (mean age=10.2 years, SD 0.7) students in two fourth-grade classes at a school in Sirjan were randomly divided into control and experimental group (N= 22 for each group). First, all participants were given Canadian Agility and Movement Skills Assessment (CAMSA) and Pacer test were taken and their level of physical activity was measured and recorded with a pedometer. The students in the experimental group participated in an intervention program for 36 sessions each for 45 minutes. The participants in the control group followed the usual program. Finally in the end of the intervention, the-second-time- performed tests were given to both groups. Mann-Whitney U test and “Poisson regression analysis” by using GEE method" was used to data analyze. Finally, the same tests were performed after intervention program for both groups. Results indicated that, this approach can play a significant role on agility and movement skills and level of physical activity, while no significant difference was observed on aerobic endurance. The results support the hypothesis that the use of TGfU approach can be effective in facilitating the development of motor performance and improving the level of physical activity among children.

The aim of this study was to investigate the effect of contextual interference in implicit and explicit condition on the coordination and motor function in slow- learning children.For this purpose,60 slow- learning children with a mean age of12.28±0.80years where selected in available.After obtaining the terms of entry and consent, based on the pretest scores were divided into four groups(explicit practice without interference, explicit practice with interference,implicit practice without interference,implicit practice with interference).IQ was measured using Wechsler's Intelligence Test, fourth edition, bimanual coordination by the Vienna test and performance with a rotatory follow-up device. Then, the Four-session training (four blocks - nine attempts per session) was performed with a Pursuit rotatory in their special training sessions. After four sessions of training, the participants of the group were again measured in the above variables and the results were recorded as a post-test. For analysis of data, outcomes of the groups were analyzed by mixed analysis of variance 2(learning type)× 2(practice conditions) at post-test and retention stages at a significant level (p≤0.05).The results show that there is no difference between implicit and explicit learning in the acquisition and retention test (p<0.05).There is no difference between implicit and explicit learning in acquiring motor function (p<0.05).But in retention of motor performance, the difference between implicit and explicit learning was significant (p<0.05) and implicit learning showed better performance. In general, it can be said that in slow- learning children, the situation with the interaction of the implicit learning background leads to better memorization.

The aim of this study was to investigate the effect of local indigenous games on cognitive function, physical literacy, and academic achievement of children 8 to 12 years old. The participants were 60 male elementary school students with an average age of 10.32. The research was conducted in four phases, include Pre-test,, Training phase in local indigenous games and dynamic courtyard,, Posttest, and Follow-up. The local indigenous games training consisted of twelve traditional-indigenous games that relied highly on physical activity and interpersonal interactions skills. In addition, the control group performed dynamic courtyard training that included some predetermined activity in school. The descriptive statistics and statistical procedures of Mixed ANOVA 2*3 and Bonferroni post-hoc were utilized to analyze data. Results were indicated that the amount of cognitive function for the local indigenous games group was higher than the control group. In addition, the physical literacy of the local indigenous games group was increased more than the control group. Moreover, academic achievement points for the local indigenous games group and the control group in the pre-test to post-test were enhanced, but this increase was higher in the local indigenous games group. The results of this study, were suggested that local indigenous games as a better model compared to the dynamic courtyard model for improving cognitive function, physical literacy, and academic achievement among children 8 to 12 years old.

 This study aims to assess the effect of 12 weeks of core stability exercises on functional movement and balance of women working in hospitals.

 Participants were 34 women aged 30-50 years working in Imam Khomeini Hospital in Tehran, Iran. They were randomly divided into two groups of exercise and control. The exercise group performed core stability exercises for 12 weeks. The functional movement was evaluated using the valid Function Movement Screen (FMS) method. The dynamic balance, power, agility, speed and flexibility of subjects were also measured using Y balance test, Sargent Jump Test, agility T-test, 20-meter running test, and seated bending forward test, respectively before and after exercise. Paired T-test was used to examine the difference between pre- and post-test scores of each group. Analysis of Covariance (ANCOVA) was used to determine the effect of intervention on the study variables.

 Results of ANCOVA showed that 12 weeks of core stability exercises significantly improved functional movement performance, dynamic balance, power, agility, speed and flexibility in women.

 Core stability exercises can improve the performance of neuromuscular system leading to proper movement of spinal, pelvic and hip joints, proper muscle balance, enhanced proximal stability, functional strength and resulting in decreased injury.

Background & Purpose:

Psychological pressure while performing motor skills can be result in focus of attention on various sources. Identification of these sources would be useful in applying appropriate instructions.The aim of this study was to examine the effects of psychological pressure on attention to related and unrelated attentional sources of vertical jump performance.

The research method was quasi-experimental design. 63 male physical education from Urmia Islamic Azad University students performed vertical jump task in two different psychological pressure situations. Social comparison, contextual and reward incentives were used to create the psychological pressure. Competitive state anxiety, attentional focus on task related (internal, external) and unrelated (performance worries and environmental factors), and vertical jump performance were assessed.

The paired-samples t test results showed that psychological pressure resulted in decrease of vertical jump performance (M1=43.52±02/6, M2=42.33±37/6), more orientation of attentional focus on task related sources rather than unrelated sources (MD1 =5.96, MD2= -2.48), and more orientation of attentional focus on internal sources rather than external sources (MD1 =3.41, MD2= -2.54), (P>0.05).

At whole, the findings are in line with skill-focused theory and suggest that the attention focus leads to attentional changes to task-related sources, especially internal task related sources.

The purpose of this study was to investigate the effects of physical activities on cognitive function and motor performance of children with attention deficit hyperactivity disorder (ADHD). Through the available sampling method, 45 boys with ADHD were selected as study sample that was equally divided into 3 groups, two experimental groups and one control group, based on pre-test scores. The following tests were administered on participants: Movement Assessment Battery for Children, Numerical Subscale of Wechsler Intelligent Scale for Children- Revised and Visual-Spatial Working Memory of Corsi block-tapping task. The results showed that the verbal working memory and visual-spatial memory of children with ADHD increased during physical activity. Additionally, physical activity led to improve motor performance and manipulation, balance and ball skills of children with ADHD. Our results point to the importance of physical exercise that is effective on the cognitive function and motor performance of children with ADHD.