درخت حوزه‌های تخصصی

Background : Duchenne muscular dystrophy (DMD) is one of the most rampant x-linked recessive lethal genetic disease with prevalence of approximately 1 out of 3500-5000 newborn boys worldwide. DMD is mutations-induced in gene encoding dystrophin that prevent the production of the muscle isoform of dystrophin (Dp427m). Aim: This study aims to evaluate the impact of hydrotherapy on health-related quality of life and body composition changes, as well as how it affects on skeletal muscle strength in boys with DMD. Materials and Methods:  Eight boys, ranging from 6 to 12 years old with DMD were enrolled in this study. The patients were randomly assigned to either a hydrotherapy group as the intervention group (Group 1; n=4) or a non-exercise group as the control group (Group 2; n=4), to receive 12 sessions of a hydrotherapy program. The patients were assessed for changes in muscle strength in the lower limbs and back, left and right quadriceps, left and right-hand grip, LBM, SMM, and general mobility and balance, before and after hydrotherapy. Results : Significant improvements in general mobility and balance were observed, along with a significant increase in muscle strength and lean body mass ( P <0.05). Conclusion : This study suggests that hydrotherapy with a precise protocol of low to moderate intensity can improve general mobility and balance, increase muscle strength in the lower limbs and back, left and right quadriceps, left and right-hand grip, and LBM in patients with DMD. The increase in strength is accompanied by increase in LBM, which not only has implications for function but also has much broader impacts on the health-related quality of life in patients.

The objective of this narrative review was to relate the pathophysiological knowledge of Osteoarthritis to the specific context of professional soccer, addressing the risks and consequences for athletes of the modality. The search bases used were PubMed, LILACS, Scielo, Embase and Google Scholar and the narrative review model was applied to synthesize the relevant information. Professional soccer participation exposes players to the highest frequencies and intensities of loads and joint injuries in the lower limbs. These factors are associated with greater risks of osteoarthritis development. Retired soccer athletes have a high prevalence of the disease. This scenario provides an impairment network that connects symptoms and joint limitations to the reduction in the quality of life of this population. Understanding microprocesses through the study of specific pathophysiological pathways, contribute to the evolution of monitoring, prevention and early intervention strategies for this population.

One of the most important models of motivational approach and avoidance, in recent decades, is the model of behavioral activation system (BAS) and behavioral inhibition system (BIS) presented by Gray. The present study aimed at comparing the group metacognitive therapy (MCT) and group mindfulness acceptance and commitment therapy (MAC) on BAS and BIS of anxious professional football players in the U-19 league in Tehran. Participants in this study were 60 football players in professional football leagues in Tehran. These participants were entered into the assessment stage, and after obtaining informed consent, they were randomly assigned to one of the three experiment groups of MCT, MAC, and WL. The participants completed Jackson’s revised 5-scale of rewarded sensitivity theory in pretest, posttest, and three months follow-up stages. The results of the present study demonstrate that MCT and MAC can make some changes in BAS and BIS among anxious football players. MCT has been more affecting on BIS than both other groups. According to these findings, it would ensure that football players affected by anxiety can take the opportunity to gain advantages from such third-wave interventions.

Shooters typically make great efforts to strengthen their physical and motor abilities, but are often less aware of the cognitive and psychological factors that affect their performance and skill performance. Therefore, it seems that shooters, especially novice shooters, are not very familiar with the mental skills related to shooting and pay less attention to mental training. However, cognitive training has recently been recognized as one of the basic skills required in perceptual-motor activities. The present study was conducted to determine the effect of training cognitive imaging strategies versus training of motor representation strategies on the acquisition and retention of shooting skills. This randomized controlled clinical trial study was performed on 45 undergraduate military science students with an age limit of 18 to 25 years, studying in the second semester of 1997-98. Subjects were randomly selected from a university of military sciences in Tehran and randomly divided into three groups of mental imagery, motor representation and control using a table of random numbers. The intervention groups received a three-week mental imagery training program, motor representation along with shooting training (five sessions per week). The control group only participated in shooting training. In order to evaluate the performance of shooters in the pre-test, post-test and memorization stages, a SCAT machine was used. Statistical analysis was performed using SPSS20 software and p value less than 0.05 was considered significant. The results of combined analysis of variance showed that both cognitive imaging and motor representation interventions had a significant effect on improving the record of novice military shooters (P≤0.05). The results showed that although there was no significant difference between motor representation and cognitive imaging groups in the post-test stage, however, a significant difference was observed between the motor representation and cognitive imaging groups (P = 0.006) in the retention stage. The results show that cognitive imagery and motor representation interventions can improve the performance of novice military shooters, although motor representation is more likely to be effective than cognitive imagery

Present research is considered applied-developmental in its objective and qualitative concerning the research nature of data, and the research design was the interpretative structural model (ISM). In order to gather data, semi-structured in-depth interviews with experts in the consumer behavior domain, selected by theoretical sampling, have been utilized. The statistical population includes all sports managers, sports specialists, and fans, and sampling continued until theoretical sufficiency was achieved. After research completion, results were sent to two participants, and their opinions were approved by identifying indices related to football fans' superstitious behavior to draw the interpretative- structural model of factors influencing football fans' superstitious behavior. The result indicated the level of dependence and influence power of each index according to which individual characteristics and environmental conditions in the region under the influence include inculcation index in the autonomous region (independent) and indices of relief, the transmission of evil, coercion, and deterrence in the dependent region.

The purpose of this study was to research the subjective experiences of an athlete during practice match competitions and to examine the potential usefulness of an adapted MAC intervention in addressing the emotional difficulties of the athlete. We investigated the usefulness of a 12-session MAC program altered for educational purposes and presented data as a case study. The case study suggested that the athlete experienced a multitude of anxiety while practicing match competitions; the athlete typically avoided these emotional difficulties and engaged in avoidant behaviors; an adapted MAC approach for educational purposes could be helpful to help the athletes accept private events, commit to performance-related behaviors, and engage more frequently to performance under pressure. More could be done to address the needs of athletes experiencing performance anxiety beyond the structure of our 12-session educational intervention. We concluded that the MAC-based intervention, to a certain extent, educated the athlete about how to meet the challenges of performance difficulties, commit to values-driven behavior, and exhibit behaviors that would potentially permit optimal performance.