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Hamid Salehi, Adnan Ghazanfari, Ahmad Reza Movahedi, Maryam Nezakat Alhosseini,
Volume 1, Issue 2 (12-2011)
Abstract
In the present investigation we determined the time course of attention demands during the jumping service in volleyball by the dual-task paradigm. Fourteen voluntary junior elite volleyball players performed 60 jumping serve. Jumping-serve performance (JSP) as primary task and verbal reaction time (RT) to an auditory stimulus that was administered in four probe positions (PP), as secondary task was measured. Repeated measures analyze of variance (ANOVA) showed no significant effect of the PP on JPS, indicates allocating the most attentional weight to the JSP. In second analyze, effect of PP on RT was significant, so that all probes RT were significantly higher than the base line RT, indicates attention demanding of the JSP. Results also showed that pre-shot in run-up (PP1) and after the ball strike (PP4) had the greatest attentional demands respectively while per-jump stepping ahead (PP2) and just pre-striking the ball (PP3) had respectively the lowest needs of attention. The results indicate that attention follows a non-linear pattern, in the JSP.
Maryam Nezakat Alhosseini, Abbas Bahram, Ahmad Farrokhi,
Volume 2, Issue 4 (12-2012)
Abstract
The purpose of this study was to examine the effect of self-control feedback on the learningof generalized motor program and parameters during physical and observational practice. Participants (n=90) were randomly assigned to physical and observational practice (self-control, yoked and instructor KR) groups. They practiced a sequential timing task. The task required participants to press four keys (2, 6, 8, and 4).They performed 72 trials during the acquisition phase and 12 in retention and transfer phase. The analyses demonstrated that during the acquisition phase, relative timing errors were lower for the self-control and instructor groups. During the retention and transfer phase, relative timing errors were lower for the self-control groups and instructor groups. This might explain self-control feedback and physical practice develop the generalized motor program but not parameter learning and support the theoretical separation of GMP and parameter processes.
Hajar Salehi, Amir Ghamarani, Hamid Reza Arab, Tahereh Golkari,
Volume 3, Issue 6 (12-2013)
Abstract
The primary aim of the present article is to analyze the efficiency of religious orientation in predicting flow experience of physical education students based on demographic variables. Also, the role of demographic variables was taken into account as the secondary aim of the study. 200 physical education students of the University of Isfahan were chosen randomly. They answered Religious Orientation Scale (Alport & Ross, 1987) as well as Flow Experience (Csikszentmihalyi, 1982). Multiple Regression Analysis was used to analyze the data and the structural analysis software was used to check the efficiency of the model. The results indicated that the intrinsic religious orientation model was positive predictor of the flow experience while the extrinsic religious orientation model was negative predictor of the flow experience. Also, the role of demographic variables indicated that the relationship between age and education with flow experience is positive and significant. In addition, it was revealed that the religious orientation model with the presence of demographic variables has the necessary efficiency in order to predict flow experience. All in all, the results of the present study confirmed that the intrinsic religious orientation is efficient in predicting flow experience.
Narges Rashidi, Hamid Salehi, Shila Safavi Homami,
Volume 9, Issue 18 (12-2019)
Abstract
The purpose of this inquiry was to examine the interrelations among handwriting legibility and speed, and underlying perceptual-motor skills in Persian language students. Seventy students (26 male, 44 female; 10.21 ± 1.02 yr; 30 poor and 40 good control hand writers) were assessed during a copying task. The children completed the visual-motor control (VMC), upper-limb speed and dexterity (ULSD), and upper-limb coordination (ULC) subtests of the Bruininks–Oseretsky test of motor proficiency (BOT). The poor group scored significantly lower on handwriting legibility and speed in comparison with classroom controls in the copying task. Correlation coefficients between perceptual-motor function scores with handwriting legibility, and with handwriting speed varied from -0.11 to 0.40, and 0.17 to 0.39 respectively. Results showed that both legibility and speed predicted differences between students classified as “poor” and “good” hand writers. Results also showed that in the poor hand writers group, age, gender, BOT-ULC, and BOT-VMC were found to be significant predictors of legibility of handwriting, whereas gender and BOT-ULC were shown to be significant predictors of handwriting speed. The findings suggest that distinct perceptual-motor components may underlie writing during copying. Poor quality of handwriting of children seems to be particularly related to some sort of deficiency and dysfunction in perceptual-motor skills. Future studies should determine the possible benefit of interventions including stimulant in perceptual-motor functioning and handwriting performance, to enhance performance in these areas.
Mr Ali Halajian, Dr Mina Mostahfizian, Dr Hamid Reza Mirsafian, Dr Hamid Zahedi,
Volume 10, Issue 20 (11-2020)
Abstract
The purpose of the present study was to evaluate the performance of Isfahan Municipality Cultural and Social Sports Organization based on the CIpp model with the approach of citizenship sports.The research method was descriptive in nature and applied in terms of purpose. In the qualitative stage of the research, first the preliminary questions of the interview were created by studying the sources related to the research, collecting information and reviewing the research.The interviewees at this stage were experts in the field of civic sports who were purposefully selected.Then, Delphi method was used in four stages to correct and improve the interview questions. In the quantitative stage of the research, the questions of the questionnaire were extracted after evaluating the themes, in the form of 94 questions, and were implemented among 113 citizen sports experts. The results showed that all four dimensions of context, input, output and process in the evaluation of the performance of this organization are higher than the average level, but need to be improved and increased. Also, evaluation and feedback on the developed programs is necessary both during and after the implementation of the program, because performance evaluation was relatively effective in achieving the goals of this program.
Mr Ghasem Babaei Zarch, Dr Hamid Salehi,
Volume 10, Issue 20 (11-2020)
Abstract
Identifying motivational barriers to sport participation in children and adolescents is important for engaging them in sport activities. The aim of this qualitative study was to explore perceptions of children and adolescents, parents, and sport coaches about barriers of youth sport participation. Semi-structured interviews were conducted with 12 children and adolescents, 8 parents, and 5 coaches. Content analysis was employed to analysis the transcripts. The results of the data analysis yielded some themes as the motivational barriers to participation in sport by children and adolescents that were grouped into two domains: the personal and the environment barriers. Constituent themes in the personal barrier’s domain included: the lack of having sport talent and lack of progression in sport, not pleasuring from participation in sport, and sport related injuries. Constituent themes related to the environmental barrier’s domain included: lake of sports culture, lake of facilities, economic problems, not being supported, and not having future. This qualitative study provided a deeper understanding about motivational barriers for habituation to sport in children and adolescents. The themes would lead youth sports organizers, parents, and coaches to motivate youth to participate and endure in sport activities by changing the personal and environmental factors.
Mrs Leyla Choopan Nezhad, Dr Rasoul Yaali, Dr Ahmad Reza Movahedi,
Volume 12, Issue 24 (12-2022)
Abstract
The purpose of this study was to determine the effect of dominant and non-dominant mental practice on Badminton's backhand short service. A total of 20 girls aged 12-14 years old from the city of Goldasht were selected and purposefully selected and randomly divided into two groups. Both training groups trained in 30 sessions, in which 50 performance were made to visualize the skill of the service mentally. In order to compare the two groups, the mixed ANOVA and Bonferron's post hoc test were used. Comparing the between-group, the results showed that mental practice with dominant hands was not significant in dynamic environment and interactive exercise, but subjective exercise was significantly (P <0.05). No significant results were obtained in the within group comparison, but given the low effectiveness, it seems that the difference between the two groups is very close to meaning. Research findings suggest that coaches and teachers of interactive practice can benefit from less-than-lateral mental practice to improve the performance of their athletes in training sessions.
Fatima Rabiei, Dr. Hamdi Salehi,
Volume 12, Issue 24 (12-2022)
Abstract
The purpose of this investigation was to examine the differences between novice and skilled baseball players to anticipate the type of ball being pitched and to specify the players’ dependence on distributed or local kinematic spatial cues. Male baseball players (N= 15; Mage: 27.73 ± 6.28 years; baseball experience: 7.90 ± 5.69 years) and novices (N= 15; Mage: 23.10 ± 5.68 years; no playing experience in baseball) were asked to anticipate the type of pitch (i.e., fastball vs. curveball) using a spatial occlusion paradigm. Both groups viewed recorded video simulations of spatially manipulated pitches in which nine specific parts of the pitcher’s body or the ball were either omitted or showed separately. The data was analyzed by a 2 (Skill level) × 9 (Display Condition) mixed-design analysis of variance. The results revealed that skilled baseball players outperformed novices in the occlusion conditions. Furthermore, the results revealed that skilled baseball players used throwing arm and ball as well as upper body kinematic cues for their correct anticipations. The results are in line with previous findings on perceptual-cognitive expertise and decision-making in interactive sports and indicate skilled baseball players are able to obtain information distributed globally within the pitcher's body, rather than reliance on specific isolated or local kinematic cues.
Hamidreza Mirsafian, Mohammamdhosein Mirsoleimani,
Volume 13, Issue 26 (12-2023)
Abstract
This study aimed to measure the effect of educational intervention of the concepts sport law on coaches’ attitude, knowledge and behavior. The method of this study was quasi-experimental, including two groups, and pretest-posttest, as well as follow-up study. Hence, 50 coaches from Eghlid, Fars province were selected by availability sampling method, then accidentally divided in two experimental and control groups. A researcher made educational protocol employed in this reseach for educating the concepts of sport law. Also, for measuring the efficiency of the educational protocol, a questionnaire for measuring the coaches’ attitude (researcher made), a questionnaire for measuring the knowledge of coaches (Mirsafian, 2018), as well as a researcher made check list employed for measuring the behavior of coaches. The Covariance analyzing test as well as Repeated Measure ANOVA employed for analyzing the data provided by research’s instruments. The results indicated that educational intervention of sport law concepts significantly effect on changing the coaches’ attitude, improve their knowledge and consequently, changing their behavior after participating in 8 educational sessions. Furthermore, effect of mentioned educational intervention was stable after 3 months from finishing the educational sessions.
Hamdi Salehi, Samira Panahi,
Volume 13, Issue 26 (12-2023)
Abstract
This investigation aimed to determine the role of using specific gestures in simple arithmetic. Forty-seven university students (25 females; Mage = 23.45 ± 3.51 years) voluntarily participated in this study. The participants completed two tasks. In the item-counting task, the participants were shown sets of identical colored squares and asked to count a specific color by either finger-pointing, nodding, or without any gestures while counting. After completing the counting task and for measurement of the working memory performance, the participants were asked to recall lists of alphabets that were previously to them. The results revealed that when using finger-pointing or nodding while counting, the participants counted faster and more accurately than when gestures were not allowed. The results of the memory task showed that the participants retrieved significantly more alphabets and more quickly when using finger-pointing or nodding while counting than when not gesturing. Thus, the gestures helped to free up cognitive resources. The findings support the hypothesis that gestures may facilitate cognitive functions by reducing cognitive load. This present investigation, consistent with previous research, suggests that we can benefit from using our hand and head movements to facilitate some simple arithmetic tasks.
Alihossein Naseri, Abbas Bahram, Hamid Salehi, Afkham Daneshfar,
Volume 14, Issue 28 (12-2024)
Abstract
ABSTRACT
This study aimed to examine the role of working memory in the effectiveness of errorless protocols for facilitating implicit motor learning in adolescents with and without intellectual disabilities. A total of 20 adolescent boys with intellectual disabilities and 20 typically developing adolescent boys (mean age = 12.12 ± 0.80 years) voluntarily participated in the experiment. The participants with and without intellectual disabilities were separately assigned to either the errorless or errorful practice group based on their IQ scores. The task involved aiming at concentric targets using a mini-basketball. The errorless practice group practiced the task from near to far distances (3, 3.25, 3.5, and 3.75 meters), while the errorful practice group practiced from far to near distances. Implicit motor learning activation was assessed by comparing performances in dual-task conditions immediately after practice, as well as after 24 hours and one week. Additionally, working memory engagement during practice was evaluated. Results indicated that the errorless group, which required less working memory engagement during practice, showed significantly better performance in dual-task conditions compared to the errorful group (p < 0.05). The findings regarding the impact of practice errors on enhancing implicit motor learning in both adolescents with and without intellectual disabilities are crucial for developing motor skill acquisition strategies for adolescents, regardless of cognitive abilities. The results were consistent with the predictions of Adams' closed-loop theory and the reinvestment theory concerning the benefits of reducing errors in motor learning, but they were not aligned with Schmidt's schema theory.
Dr. Hamid Salehi, Ms. Neda Amirpour Najafabadi,
Volume 100, Issue 100 (10-2020)
Abstract
This study investigated the relationship between young athletes’ perceptions of their coaches’ achievement goal orientations and the coaches' fair play behaviors. The participants were 318 young athletes (Mage=16.60±4.10years) from basketball and volleyball who volunteered to participate. The participants completed the Perceived Motivational Climate in Sport Questionnaire (assessing task-involving and ego-involving climates) and the Coaching Fair Play Behaviors Inventory (CFBI). The results revealed a negative relationship between perceived task-involving and ego-involving climates. Additionally, a positive correlation was found between coaches’ task orientation and the six CFBI factors (i.e., teaching, modeling, expectations/pressure, reinforcement/reward, communication, and punishment). In contrast, coaches’ ego orientation showed a negative correlation with three CFBI factors (i.e., teaching, modeling, and expectations/pressure). The findings indicate that coaches who integrate teaching, modeling, expectations/pressure, reinforcement/reward, communication, and punishment in their fair play behaviors are more likely to create a task-involving climate within their teams. In contrast, coaches who apply less modeling, teaching, and expectations/pressure tend to cultivate an ego-involving environment. The primary takeaway for coaches is that emphasizing task-involving approaches and fostering a positive, supportive environment can promote sportsmanship, ethical values, and humanistic principles in sports.
