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Ehsan Zarian, Abbas Bahram, Mehdi Sohrabi,
Volume 1, Issue 1 (9-2011)
Abstract
The
purpose of present research was to answer to this question that how attentional
instructions and increasing frequency of movement impress on relative phase
stability in coordination bimanual movements? Participants (N=14) practiced in
phase and anti phase under internal and external attention and increasing
frequency. In acquisition phase apply external v. internal attention and after
each trial KP were given to subjects. On delayed retention test no render
specific instruction. The results revealed that no difference between internal
and external attention about affect on phase stability on in phase and anti
phase patterns. Also increase frequency of movement lead to higher variability
in anti phase and higher stability on in phase.
Ali Abbas Zadeh, Hamid Reza Taheri, Ali Heirani, Bahram Yousefi,
Volume 2, Issue 3 (8-2012)
Abstract
The aim of this study was examining the effect of knowledge of results presentation (after successful and unsuccessful trials), on learning and error detection capability in force-produce task. Sixty under graduated students (range age 21.6±4), participated in this study and in order to KR presentation, divided in three groups. One of the groups received KR after successful trials, the other groups after unsuccessful trials. The control groups did not receive any KR. All the participants throughout the trials in the acquisition and retention phases were error estimated. The task was to produce the 70℅ of maximum force of their right hands, by gripping a dynamometer. After data collection, the analysis conducted by using ANOVA repeated measurements for acquisition period, and one way ANOVA for retention test. In acquisition, results showed no significant differences between the first and second groups, on performance and error detection capability of force-produce task (P> 0.05). However in retention (no KR), there was significant differences between two groups (P&le0.05), means that the first group which received KR after successful trials was better than the second group as well as control. This pattern of results suggests that if people receive the KR after successful trials than unsuccessful, the better learning and error detection capability will occur.
Mohammad Ali Besharat, Mohammad Hossein Ghahramani, Nasoor Ahmadi,
Volume 3, Issue 5 (4-2013)
Abstract
The aim ofthisstudy was to investigatedifferentaspects ofimpulsivityin the athletes of contact and non-contactsports. volunteer participants were 60 athletes of contact (age: 25.9±4.6 years) and non-contact (age: 27.6±4.9 years) sports. Participants were asked to complete the Barratt’s Impulsivity Scale (BIS-11) and participate in continuous performance test(CPT). Multivariate analysis of variance results indicated that there was significant difference between athletes participating in contact and non-contact sports in the continuous performance test items(F2,117= 3.27, p=0.001, partial &eta2=0.89) and impulsivity scale factors(F3,116=47.66, p=0.001, partial &eta2=0.55).So that, in the attentional, motor, and non-planning impulsiveness and at the number of correct recognition in continuous performance test, the athletes of contact sports get more points than the athletes of non-contact sports. In contrast, the athletes of non-contact sports get more points in the average of incorrect time and the number of incorrect recognition than the athletes of contact sports. Therefore Thisfeature is effective in motor and non-motor behaviors of athletes in some special conditions that will appear as immediate and sustained function.
Ali Abaszadeh, Abdolah Ghasemi, Ali Heirani, Mehdi Nabavi Nik,
Volume 10, Issue 19 (8-2020)
Abstract
Augmented feedback is information that guidance performance to direction correct response and has critical role in motor skill learning. The purpose of this study was to examine the effect of knowledge of results, after good and poor trials on learning and error estimation capability in children.32 elementary students (Mean age 10/4, SD ± 0/9) that all novice and no experience in dart skill participated in this research and randomly divided in two groups (good and poor feedback groups). Participants’ in acquisition phase exercise dart skill at 10 blacks (6-trial) and received knowledge of resulting feedback on 3 attempts in each block, also in all their trials on the acquisition and retention had error estimation. Multiplex Analysis of variance test (2*2) with repeated measures, independent t test and Multiple Analysis of variance test used to data analysis (α=0.05). There were significant difference between two groups in performance and error estimation in practice phase (p=0/001). Also, the good feedback group showed learning and error detection capability advantages on a delayed retention test (p=0/001). These results demonstrated that learning and error detection capability are facilitated if feedback is presented after good rather than poor trials.
[M1]چکیده انگلیسی بر اساس چکیده فارسی دوباره نویسی شده است.
Zahra Karimi, Javad Gholamian, Vahid Saatchian,
Volume 10, Issue 19 (8-2020)
Abstract
The present study investigates the role of aesthetic dimensions of the place and the tendency of costumers to the sport in physical fitness and aerobics clubs in Mashhad. The research method was descriptive-correlational and the statistical population consisted of customers of Mashhad fitness and aerobics clubs. Considering correlational studies, 250 persons were selected (randomly) as the samples. Then two questionnaires of Soleimani's Aesthetic Dimensions (2012) and Gil's Sport Participation Motivation Questionnaire (1983) were used. The validity and reliability of the questionnaires were 0.71 and 0.82, respectively. The results showed that the most important aesthetic component of "color" is in the first priority and the "environment" component is in the last priority. In terms of forecasting the tendency of customers to sports, It can be said that 43% of the changes in tendency to sports is related to aesthetic variable (P<0.05). The dimensions of aesthetics can have a positive and significant effect equal to 0.77 on tendency to sports. Considering the changing of today's customer’s attitude regarding the use of equipped and modern sports spaces with exclusive spaces and modern style, applying aesthetic dimensions can be useful for customer satisfaction, assurance of their loyalty, as well as the tendency of people to sports and sports clubs.
Mr Reza Heydari, Dr Ehsan Asadollahi,
Volume 11, Issue 22 (12-2021)
Abstract
The spread of coronavirus in the world has had various effects on industries, especially the sports industry. The purpose of this study was to explain and classify the effects of coronavirus outbreak on the dimensions of the sports industry. The present study was applied in nature, mixed in terms of data retrieval and descriptive-exploratory in terms of data analysis method that data collection was done in the field. The statistical population in the qualitative section included sports experts, 18 people were purposefully selected, and the statistical population in the quantitative section included all activists in the field of sports and sports industry, of which 600 samples were selected by simple random sampling. Data collection in the qualitative part was done by the systematic method of data theory and in the quantitative part, using a researcher-made questionnaire obtained from the qualitative part of the present study with 55 items in 5-point Likert scale. Research data were analyzed using descriptive and inferential statistical methods with the help of SPSS24 and Amos statistical software. The results showed that the outbreak of coronavirus had a role in the production and distribution sectors, private and public sectors, sports education and research, trade, events and competitions, technology, services and economics of the sports industry. This finding can help the country's sports managers and officials to improve the situation of the sports industry in the post-Corona era.
Dr Kianoosh Shajie, Dr Mahdi Talebpour, Dr Seyed Morteza Azimzadeh, Dr Mohammad Keshtidar, Dr Reza Heydari,
Volume 12, Issue 23 (9-2022)
Abstract
Football referees are one of the main and central components of football and face many problems that if not paid attention and identified injuries that reduce their performance and irreparable damage to the football body; Therefore, the purpose of this study was to qualitatively analyze the pathology of human capital of professional football in Iran, which was a case study on professional referees in the Iranian Football Premier League.This research is applied in terms of purpose, descriptive-analytical method and qualitative research in terms of implementation. Data collection tools were library resources, interviews and Delphi questionnaire. The statistical population in the interview section included all the elites in the field of football refereeing and familiar with human capital issues, which targeted 20 people, and in the Delphi section, all international and national referees of professional football in Iran, 25 of them targeted and snowball. Sample titles were considered. Open and axial coding, summarizing and filtering techniques were used to extract the raw data. Finally, all 57 injuries identified in the Iranian football refereeing department were confirmed by research experts. It can be concluded that structural, contextual and behavioral injuries are very important in the human group of judges. Undoubtedly, the results of the research can be used as a beacon in the future plans of the Iranian Football Federation, especially the referees' committee and department, and can be used in determining policies.
Dr Mahdi Nabavinik, Dr Hamidreza Taheri, Dr Alireza Saberi Kakhki, Dr Hamidreza Saberi Kakhki,
Volume 13, Issue 25 (9-2023)
Abstract
Massive amount of practice over many years raise the question that handling class of action by generalized motor program may modify over years. The purpose of the present study is to provide evidences to investigate this hypothesis by examining the pattern of co-activation and agonist to antagonist activity ratio. Seven experienced darts players were asked to execute from standard dart distance (fourth distance) and six other farther and nearer distances, making 252 throws. Relatively, the results showed that at least in five from the seven samples, there was a significant difference in muscle co-activation between fourth and six other distances. These findings do not support the existence of a generalized motor program at fourth distance so that performance of elite players met limited generalizability
Dr Amir Hossein Sepehrian, Dr Mahdi Talebpour, Ms Malihe Sadat Aghaei Shahri, Mr Majid Zahmati,
Volume 13, Issue 25 (9-2023)
Abstract
The purpose of this research is to investigate the relationship and factors affecting the shopping motivation and regret after shopping of the major customers of sports products. This research was applied in terms of purpose and descriptive and survey in terms of nature and method. The statistical population of this study was all customers of sports products in Khorasan Razavi province that According to the Cochran sample size, 384 people were selected as a statistical sample by random cluster sampling And completed the standard questionnaires of regret after the purchase of Delacroix et al. (2007) and the study of purchasing motivations of Iranian consumers Heidarzadeh and Bahrami (2015). Data analysis was performed by SPSS and AMOS software. The results showed that the variable of shopping motivation was affected by factors such as shopping at auction, utilitarian shopping, pleasure shopping, role playing, brand consciousness and awareness (brand loyalty), sensory motivation and inspiring shopping, quality awareness, social shopping, fun or entertainment shopping and value shopping respectively. Also, the two dimensions of feeling regret after shopping and feeling regret due to not shopping were the two factors that explained the variable of shopping regret. On the other hand, it was observed that there is a correlation between shopping motivation and shopping regret and the relationship model between shopping motivation and shopping regret has a good fit. Therefore, identifying shopping motivations can be effective for owners, marketers and sellers of sports equipment stores in creating long-term relationships between sellers and customers.
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.
Davoud Fazeli Kasrineh, Hamidreza Taheri, Alireza Saberi Kakhki,
Volume 14, Issue 27 (8-2024)
Abstract
The purpose of this study was to investigate the effect of practice variability in physical compared with observational practice on golf putting performance. To this end, 50 male right-handed students (25±3.7 years) participated in this study. Participants were randomly divided into 5 groups (physical constant, physical variable, observational constant, observational variable, and control). During acquisition, the physical variable group randomly performed 50 trials from 5 different starting points to 2 different targets, but the physical constant group performed 50 trials from one starting point to one predetermined target. The observational variable and constant groups observed the performance of the physical variable and constant groups, respectively. The control group just participated in pre-and post-tests. Participants performed a test just like the pre-test 10 minutes and also 24 hours after practice. Putting accuracy was measured as the dependent measure. Results showed that variability of practice had a positive effect on performance than constant practice in physical and observational conditions. Maybe the similar underlying mechanisms and also the similar feedback effects resulted in the higher performance of the variable group than the constant group in physical performance and action observation.
Hanieh Ghasemian Moghadam, Mahdi Sohrabi,
Volume 14, Issue 27 (8-2024)
Abstract
This study aimed to investigate the effectiveness of basic taekwondo exercises on the executive functions of children with a learning disorder. For this purpose, 20 boys aged 10 to 12 years with learning disorder in Mashhad were selected and randomly assigned to exercise and control groups. The exercise group practiced Taekwondo for 12 sessions, each session lasting 50 minutes, repeating three days a week. The control group also engaged in their normal daily activities during this period. Changes in subjects' executive functions were measured before and after the exercise period by the N-back and the Tower of London tests. Analysis of variance with repeated measures was used for statistical analysis. The results showed that basic taekwondo exercises improve executive functions in the exercise group; All these changes were significant compared to the control group (p<0/05). Therefore, based on the results of the present study, it can be concluded that basic taekwondo exercises help to improve the executive functions of children with learning disorder by affecting brain areas related to executive functions.
Dr Vahid Saatchian, Dr Farideh Hadavi, Dr Hossein Akbari Yazdi, Bahador Azizi,
Volume 100, Issue 100 (10-2020)
Abstract
The main objective of this study was to provide a model of the underlying causes of the management of the relationship between physical education faculties and sport science and the executive branch of the sports industry. In order to collect information, deep interviews with the elite were conducted on the topic of research. Sampling was conducted purposefully and snowball method. Finally, 18 qualitative interviews were conducted. The findings were analyzed through coding method in three stages: open, axial and selective. The findings revealed 59 effective signs in the relationship management of faculties and the executive branch of the sports industry. These labels were categorized in 14 concepts including knowledge, organizational culture, government look, industrial thinking, scientific thinking, human resources, ethical aspects, trust / mediation unit, parallel management, laws and regulations, Media, capacity building, competitive space and communication management. Finally, the research model emerged from five main categories including culture, marketing, environment, insight, and trans-organization powers. According to the findings of the research, there are some executive strategies that can be used by sports managers in relation to the scientific management of the relationship between sports organizations.
Ghodsieh Sangtarash, Vahid Saatchian, Javad Mohammadkhani, Mohammad Keshtidar,
Volume 100, Issue 100 (10-2020)
Abstract
The aim of this study was Identifying the mental pattern of experts regarding sustainable revenue generation for sports federations (Karate, Judo, Taekwondo Federations). The current research is applied in terms of its purpose and exploratory analytical in terms of method, and based on the type of operations used, this research is of a mixed type. The statistical population of the research includes professors of sports management, managers of selected federations, and opinionated managers of the National Olympic Committee, who were investigated based on previous experiences using a purposeful sampling method with a snowball approach until the saturation point, in the number of 25 people. In the Delphi phase, the components and sub-components of the research were determined. Then the extracted factors were stratified using Q modeling by using Q factor analysis and SPSS 25 software. The findings showed that the most important revenue generating factors of the selected federations include the provision of non-sports products used by athletes by the federation, sponsors of athletes, income from the World Federation for the development of basic sports, income from participating in world competitions, annual contributions from the World Federation, Incomes from coaching classes, tuition fees for membership in basic teams, annual contributions from the Ministry of Sports, incomes from participating in world competitions. Therefore, it can be concluded that economic activities under the supervision of the federation to provide the products and services needed by athletes and to develop sources of income outside the federation should be included in the agenda of the federations.
