Purpose:
The main aim of the research was to analyse aggression dimensions among athletes practising martial arts and combat sports.
Material and Methods:
There were 219 respondents. The Buss and ...Perry Aggression Questionnaire (BPAQ) in the Polish adaptation by Siekierka was applied.
Results:
Martial arts apprentices turned out to present a statistically significantly lower level of hostility (
p
< 0.001) and of the general aggression index (
p
= 0.04) than combat sports athletes. It turned out that lower level of aggression was noted in female participants (physical aggression (
p
< 0.001), verbal aggression (
p
= 0.004), hostility (
p
< 0.001), and the general aggression index (
p
< 0.001). Analysis revealed that the training experience and the training rank did not differentiated the level of the respondents' particular aggression dimensions.
Conclusions:
It would be advisable to perform parallel analyses in other areas of Poland and take into account the respondents' education and place of residence.
This study aimed to test the effect of mental imagery training on the competitive anxiety of karate Kumite athletes. One of the benefits of mental imagery is that it can improve the athlete's ability ...to control psychological symptoms such as anxiety. So that athletes can show their best performance during the game. This research used quantitative methods with an experimental approach, the pretest-posttest control and an experimental group design. The population used West Java regional karate athletes, totalling 42 athletes. Using purposive sampling techniques, the samples consisted of 15 Bandung Karate Club Kumite athletes and 15 Kei Shin Kan Kumite athletes. Data were obtained using The Hogg Eco-Anxiety Scale. Based on the results of the data analysis obtained, the average experimental pretest of 25.20 and posttest of 20.00 showed a decrease in the anxiety of Kumite athletes after being given imagery training. In addition, the N-Gain scores in both groups show decreased pressure in Kumite athletes. However, the N-Gain score in the experimental group was lower than the control group (-23.60 < 3.56), and in the t-test on the N-Gain value, the score obtained the Sig. Value (2-tailed) was 0.005 < α = 0.05. So it can be concluded that imagery training affects the competitive anxiety of Kumite athletes, and there are significant differences in effectiveness in applying imagery training with conventional exercises
Objective The purpose of the present study was to evaluate the scientific framework of studies related to karate injuries and to provide a comprehensive review of the previous studies. Methods The ...search for articles was performed in specialized databases and articles were selected based on the inclusion and exclusion criteria. Results The study showed that most injuries in karate occur in the head and neck. Most of these injuries are contusions and bruises. It was also found that most of the reported injuries occurred during practice, but these injuries are generally mild. The study also showed that the full-contact of kicks and punches, opponent’s technical foul and long training are the most important causes of injuries in karate. Conclusion The study showed that most injuries in karate occur in the head and neck. Most of these injuries are contusions and bruises. It was also found that most of the reported injuries occurred during practice, but these injuries are generally mild. The study also showed that the full-contact of kicks and punchs, opponent’s technical foul and long training are the most important causes of injuries in karate.
This study investigated the effect of a 10-week karate training program on the motor skill development of 5-7-year-old children new to karate with two different test batteries. A total of 28 ...participants were included in the study: 18 in the Karate group and 10 in the control group. The karate group was subjected to a fundamental karate training (kihon) program consisting of 90-minute sessions four days a week for ten weeks in addition to physical education classes at their schools. In contrast, the control group did not participate in any sportive activities except physical education classes in their schools. Data were collected using the Eurofit test battery and the TGMD-2 test. In the pre-post test comparison of the anthropometric measurements of the karate group, no significant difference was found in the control group. In contrast, a significant difference was obtained in height, body mass index, and body fat percentage. In the post-test analysis of the two independent groups, there were statistically significant differences in favor of the karate group regarding height and body fat percentage (
< 0.005). In the pre-post analysis of the Eurofit test and the TGMD-2 for the karate group, all parameters showed statistically significant improvements (
< 0.001), while the control group showed no statistical difference. After comparing the karate and control groups, the Eurofit Test and TGMD-2 post-test results showed significantly higher scores (statistically significant differences) in all parameters for the karate group. In conclusion, the study shows that the 10-week karate training program positively affected the motor development of the participating children.
Today, the participation of visually impaired individuals in sports activities is essential. Because the ability to move independently starts to develop with a delay in visually impaired individuals, ...physical activity is necessary to compensate for developmental delay, eliminate the problem of independent movement in social life by reducing obstacle perception problems, develop self-confidence, and provide regular muscle activation and motivation to move. The study investigated the effect of 6 weeks of karate (kihon) and basic movement training on balance performance in individuals with congenital visual impairment. Fifteen visually impaired individuals aged between 10 and 14 participated in the study, and three groups were formed: experiment 1, experiment 2, and the control group. After the pre-tests were taken, the experimental groups received karate and basic movement training in addition to physical education classes for 6 weeks, while the control group received only physical education classes. When the study results were examined, there were highly significant differences between the pre- and post-test values of the groups receiving karate and basic movement training. At the same time, no progress was observed in the control group. In the post-test comparison of the karate and control groups, positive significance was found in the values of the karate group. In the same way, in the post-test comparison of the basic movement training group and the control group, positive progress was made in the basic movement training group. The post-test comparison of the basic movement training and karate groups was the same. As a result, it was concluded that basic movement training and karate exercises applied for 6 weeks positively affected the balance development in visually impaired individuals aged 10-14 years. No difference was found between the exercise protocols regarding effectiveness, and no improvement was observed in individuals who did not participate in any exercise.
Prompted by the increasing interest in networks in many fields, we present an attempt at unifying points of view and analyses of these objects coming from the social sciences, statistics, probability ...and physics communities. We apply our approach to the Newman-Girvan modularity, widely used for "community" detection, among others. Our analysis is asymptotic but we show by simulation and application to real examples that the theory is a reasonable guide to practice.
CORE-PERIPHERY STRUCTURE IN NETWORKS ROMBACH, M. PUCK; PORTER, MASON A.; FOWLER, JAMES H. ...
SIAM journal on applied mathematics,
01/2014, Letnik:
74, Številka:
1
Journal Article
Recenzirano
Odprti dostop
Intermediate-scale (or "meso-scale") structures in networks have received considerable attention, as the algorithmic detection of such structures makes it possible to discover network features that ...are not apparent either at the local scale of nodes and edges or at the global scale of summary statistics. Numerous types of meso-scale structures can occur in networks, but investigations of such features have focused predominantly on the identification and study of community structure. In this paper, we develop a new method to investigate the meso-scale feature known as core-periphery structure, which entails identifying densely connected core nodes and sparsely connected peripheral nodes. In contrast to communities, the nodes in a core are also reasonably well connected to those in a network's periphery. Our new method of computing core-periphery structure can identify multiple cores in a network and takes into account different possible core structures. We illustrate the differences between our method and several existing methods for identifying which nodes belong to a core, and we use our technique to examine core-periphery structure in examples of friendship, collaboration, transportation, and voting networks.
Introduction: Muscular fatigue can interfere with the proper functioning of postural stability strategies, hence decreasing stability and increasing the risk of injuries in athletes. The aim of this ...study is to examine the effect of training on head and neck stability against Tsuki punch during the neck muscle fatigue in male athletes.Materials and Methods: 24 professional male karate athletes were selected and randomly divided into the experimental n = 12, age: 20.92 ± 2.62 (y), weight: 71.00 ± 11.68 (kg), height: 1.77 ± 0.05 (m) and control n = 12, age: 22.08 ± 2.21 (y), weight: 72.15 ± 13.24 (kg), height: 1.78 ± 0.06 (m) groups. The experimental group performed a training program for eight weeks, three times per week. Moreover, the angular displacement and acceleration of head and neck in Tsuki punch during muscular fatigue were measured by motion analysis system before and after the training protocol. Data were analyzed by paired t-test, independent t-test, and analysis of covariance (ANCOVA) at the significance level of 0.05.Results: There was a significant difference in angular displacement (Experimental: 2.95 ± 1.85, Control: 4.15 ± 2.15) and acceleration before (Experimental: 16.29 ± 9.62, Control: 70.17 ± 12.23) and after (Experimental: 24.69 ± 15.98, Control: 70.86 ± 14.92) hitting the punching bag.Conclusion: The outcome of this study showed that proprioception training can improve head and neck postural stability during muscular fatigue against external perturbation in Karate athletes. Therefore, these exercises can be used to reduce the effect of external perturbation on the head and neck of these athletes.
The main aim of the study was to describe the key factors involved in the preparation process of the Brazilian bronze medal kata team for the 2019 Pan American Games, focusing on the athletes' ...perceptions.
Three male athletes from the Brazilian team performed a semistructured interview to identify the following topics: specific time for preparation, training organization, supplementary support, and perception and suggestion about the efficiency of the preparation process.
Data from interviews were gathered and coded, and the major themes were summarized as follows after performing content analysis of the data: (a) technical and tactical training took the major part of the preparation; (b) the high level of the coaches helped the team to reach the technical quality of the kata; (c) better psychological support during the preparation could improve the athletes' performance during the training and competition; and (d) the lack of financial support compromised the commitment of the athletes during the training routine.
We concluded, based on the athletes' perception, that the most positive factor during preparation for a major competition was the high amount of time focused on technical-tactical training. Even with limitations to performing the physical training, the athletes recognized the importance of the physical component, to increase performance. Financial and psychological support could have helped the team to reach a better result (gold medal) attenuating the training distress.
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