جستجوی مقالات مرتبط با کلیدواژه "judo" در نشریات گروه "تربیت بدنی"

This study aimed to investigate the effects of short-term supplementation with coenzyme Q10 (CoQ10) on markers of oxidative stress and inflammation, specifically superoxide dismutase (SOD), malondialdehyde (MDA), and interleukin-6 (IL-6), following exhaustive aerobic exercise in judo athletes.

Sixteen male judo athletes participated in a randomized, double-blind, crossover study in which they received CoQ10 or placebo. Participants received CoQ10 supplementation for 30 days after completing a first bout of exhaustive aerobic exercise, then completed a second bout of exhaustive exercise. Blood samples were collected before exercise, immediately, and 24 hours after exercise during the two bouts to measure levels of SOD, MDA, and IL-6. These markers were analyzed using enzyme-linked immunosorbent assay (ELISA) and spectrophotometric techniques.

CoQ10 supplementation significantly increased SOD levels after 30 days of supplementation compared to the placebo group (p<0.05). MDA and IL-6 levels were significantly reduced during the recovery period after CoQ10 supplementation (p<0.05). These findings suggest that CoQ10 effectively enhances antioxidant defences and reduces lipid peroxidation and inflammation induced by exhaustive aerobic exercise.

CoQ10 supplementation improves oxidative stress and inflammatory responses in judo athletes after exhaustive aerobic exercise. CoQ10 may be an effective nutritional strategy to enhance recovery and reduce exercise-induced cellular damage in high-intensity sports

The purpose of this study was to evaluate the environment and determine the position of the Judo Federation with a strategic approach. The research method is descriptive and applied in terms of purpose, and data collection was performed in a mixed field (quantitative and qualitative). The statistical population of the research in the quantitative part included 70 officials of the federation and provincial judo delegations and managers of national league clubs and in the qualitative part, 12 experts. Due to the limitations of the members of the statistical community, the statistical sample was equal to the community. The research information was collected from upstream documents, background literature, questionnaires and expert opinions, and was summarized and finalized in the Steering Council. The research instrument was a researcher-made questionnaire whose content validity was confirmed by 10 university professors and its reliability was confirmed by using Cronbach's alpha calculation (α = 0.86). The results showed that in the Judo Federation, there are 7 strengths, 9 weaknesses, 9 opportunities and 8 threats. According to the findings, the total final scores of the Judo Federation Internal Factors Evaluation Matrix were 2.63 and the total final scores of the External Factors Evaluation Matrix were 2.68 and the offensive strategic position was obtained. The authorities should take the necessary steps to increase the development measures of judo by exploiting the strengths and using the opportunities in a timely manner, while eliminating the weaknesses and reducing the effects of the threats.

Exercise intensity and duration of exercise are important parameters in the metabolism of purine nucleotides Therefore, the aim of this study was to compare the metabolism response of some purine nucleotide indices to two types of high intensity interval training (HIT) in Athletes Judo Men. In this semi-experimental study, of, 27 Athletes Judo Men randomly assigned to 30-s HIT groups (n = 9), 60-s HIIT (N = 9) and control (n = 9). The exercise program consisted of eight weeks and two types of intense 30-s and 60-s training sessions three times a week. Blood samples were collected for pre-test and post-test stages in order to study the variables studied in fasting conditions. Data analysis was performed using one way ANOVA and t-test with a significant level (p ≤ 0.05) and using SPSS software. Results of ANOVA for HGPR , Hypoxanthine showed a significant difference between the 30-s HIIT group and 60-s HIIT group compared to the control group (P≤0.05). Also, after eight weeks of intense intermittent exercise (HIT), no significant difference was observed in the values of HGPR, Hypoxanthine and Uric acid between the 30 and 60 seconds HIIT training groups (P> 0.05). According to the dependent t-test, HGPRT levels increased significantly in both HIIT training groups of 30 seconds (P = 0.02) and 60 seconds (P = 0.001) from pre-test to post-test.Overall, the results showed that these two methods of Intensive Intervention training similar effect on indicators of purine nucleotide cycle.

This study aims to design and prioritize a strategy for the development of Judo sport in Iran, suing SWOT and QSPM methods.

the research was a descriptive one performed through collecting filed information, using the mixed (qualitative and quantitative) method. The population consisted of 70 authorities in Judo federation committees, the board of directors' members, provincial boards chairman and managers of national league members in the quantitative section, and 12 elites in the qualitative section. Because of the small population, the sample was set equal to the population. The information for research was first gathered from high-level documents, literature, questionnaires and elite ideas, then concluded and finalized by the leadership committee. An author made questionnaire was utilized; its validity and reliability approved by 10 university professors, and by calculating Cronbach Alpha (α=0.86), respectively.

there are 7 strength points, 9 weak points, 9 opportunity, and 8 threats in the Judo federation. 10 strategies were developed using the SWOT analysis method and prioritized using the QSPM technique.

Authorities should develop an integrated system of skill management, facilitate the path for improvement of Judokas, and try to maintain and continue the honors of Judo in the region, Asia, and the world, as well as considered establishment and development of this sport. Focusing on aggressive position strategies, the Judo federation can reach its high goals

The aim of this study was desiginig performance evaluation managers model based on the Balanced Scorecard in the Islamic Republic of Iran Kurash and Judo Federation.Research method has been descriptive-survey one,which is conducted through field study.Statistical universe were members and experts of Judo and Kurash Federation.The research statistical sample has been selected purposive.A researcher made questionnaire has been applied to data collection,which its formal validity was confirmed by experts(n=12).As well as, its reliability was calculated by using Cronbach’s Alpha(0.96).In this study,structural equation modeling and PLS software have been used to data analyze and model fitness.Performance appraisal model of the Kurash and Judo Federation,in4factors contain10dimensions and39indices,so that the factor of growth and learning has3dimensions and17indices,customer and sport consequences has3dimensions and7indices, its internal processes includes3dimensions and11indices, and fiscal factor contain a dimension and4indices;which the Factor loadings of internal processes,customer and sport consequences, growth and learning and fiscal factors respectively were0.93,0.92,0.88 and0.84. Moreover, according to the correlation between latent variables,the highest correlation is between fiscal factor and internal processes that is0.89, and then, is between the internal process and customer and sport consequences that is0.88.According to the research results,paying special attention to4studied context and their confirmed dimensions and indices is recommended to performance appraisal of organization.Also,however it paid attention to finnacial matters of organization, it is caused to increse internal processes in performance indices of iran Kurash and Judo Fedration and indices of dimasion internal procssesis caused to make progress in performance indices in dimensions of customer and sport results

Individuals ability are different for achieving to success in sports disciplines and most of this differences are related to genetic factors. Finding genetic structures that effect on athletic performance is an important step in developing methods related to talent identification. Judo athletes for being successes in this discipline need to high levels of strength and power. The previous investigations revealed the insulin-like growth factor (IGF2) is associated with body mass index, fat-free mass, hand grip strength and leg strength.

The aim of the present study was to evaluate the possible association between ApaI IGF2 and judo status. The athlete group includes 40 elite judo athletes who had medals in Asian and World championship and control group comprised of 120 health non-athletes men.

DNA was extracted from the peripheral blood using a non-enzymatic method and Genotyping was conducted by PCR method for identifying the IGF2 ApaI polymorphism. The distribution frequency of this polymorphism was determined by chi-square analysis.

There were no significant differences in genotype and allele frequency of the judo athletes compared with control.

The result of the present study revealed IGF2 ApaI polymorphism due to the influence of judo discipline from different factors and no relying completely on a single factor (such as strength or endurance) may have no effect in judo status in elite Iranian judo athletes.

Focus of attention instructions and verbal feedbacks that coaches provide to athletes during practice, and how these instructions and feedbacks affect athletes’ focus of attention during competition has rarely been investigated. The aim of this study was to investigate the abovementioned issue in the combat sport of judo using adolescents who were invited to national judo team camp. Twenty-five adolescents participated in this study. Participants were asked to complete a questionnaire about their coaches’ attentional instructions and verbal feedback during practice, and the judo players reported their focus of attention during competition. The questionnaire was adopted from the previous studies, and included multi-choice and open-ended questions. The majority of participants reported that during practice, their coaches provided equal internal and external focus of attention instructions, and equal knowledge of performance (KP) and knowledge of results (KR) feedback. Further, our results indicated that during most phases of competition the most prevalent theme that participants focused on was “winning and strategy.” However, in the execution phase of skill performance, the most prevalent theme was what was categorized as “clear mind” It seems that during the execution phase, adolescent national-level judo players do not adopt any focus or at least are unaware of their thoughts explicitly.

The purpose of present study was studying the Talent Development Environment status of adolescent boy judokas in premier league.

The research method has been descriptive - survey one, which has been carried out through a field study. Admin To our young judokas son of the Premier League were selected as examples. Talent development environment for data collection questionnaire was written by professors of physical education content validity and its reliability by Cronbach's alpha (0.94), respectively. The descriptive statistics and inferential statistics mean frequency of Kolmogorov - Smirnov test for normality of data distribution was used. Binomial test to determine the dimensions and the prioritization of Friedman test in SPSS 22 software was used. The analysis and application of Amos 22 was used.

Results showed significant differences in priorities from the perspective of the development of talented young judokas there. Factor analysis has shown that the development of long-term, Focus on long-term development, environmental protection network, communication and understanding of the athlete as a factor loadings (0.94), (0.73), (0/67), (0.64) and (0/63) the importance of talent development has identified aspects of the environment.

Generally, fostering and maintaining talent occurs in a specific environment and context in which attention to these factors can play an important role in the development of talent. Therefore, attention to these factors in the planning and management of talent Attention and emphasis. Actually, the dimensions of talent development environment, communication has been good condition and other aspects of their modest status in the network between the environmental protections has been the poor than the other dimensions.

Post-activation potentiation (PAP) is the phenomenon by which muscular performance is enhanced in response to a conditioning stimulus. The purpose of this study was to compare the effects of PAP induced by resisted, accelerated and traditional plyometric with and without caffeine ingestion on competitive judokas performance.

In a randomized, crossover design, 9 male judokas participated in this study and performed two special judo fitness test (SJFT) with 90 second between trials in four conditions: PAP with traditional plyometric+ SJFT, PAP with accelerated plyometric+ SJFT, PAP with resisted plyometric+ SJFT and warm up+ SJFT. To evaluate the effect of caffeine, 10 days after the last PAP session, the subjects participated in four conditions randomly: caffeine + PAP + SJFT, PAP + SJFT, caffeine + SJFT and placebo+SJFT. Caffeine (6 mg/kg) was administered 60 minutes and PAP (3 sets x 6 repetitions of jumping alternating lunges) was performed 5 min before the SJFT. Blood sample was taken after SJFT2. To analyze the data One-way repeated measures ANOVA and Bonferroni post-hoc test and significant level at P≤0.05 was used.

Results showed no significant difference in total throws and index of SJFT between PAP conditions. Caffeine and caffeine + PAP resulted in significant increase in total throws of SJFT and blood lactate than PAP and placebo (P≤0.05).

It seems that PAP with different plyometric methods can’t improve SJFT, but caffeine combined with accelerated PAP can be more effective to improve judo performance.