The Effect of Taekwondo Leaders’ Sympathy on Competitiveness Recognized as Exercise Immersive

Boseob Heo(Boseob Heo),Kyunghwan Choi(Kyunghwan Choi) J-INSTITUTE 2022 International Journal of Martial Arts Vol.7 No.2

Purpose: This study revealed the effect of taekwondo leaders' sympathy on athletic performance perceived as immersive. Corona 19 has increased anxiety due to abandonment of the university(exercise) due to the cancella-tion of the tournament. Attempts to provide materials. Method: Players(Kyoruki, Poomsae, demo) who participated in the tournament sponsored by the Korea Taekwondo Association(19th Korea Taekwondo Association President's Cup, 2022 National Taekwondo Champi-onship) for about one month from February to March 2022. A recruitment team was selected in, and a question-naire was distributed, and a total of 278 copies were used for the final analysis. After explaining the purpose and purpose of this study to the players, questionnaires were distributed. As a data processing method, frequency analysis, exploratory factor analysis, reliability analysis, correlation analysis, multiplex, and simple regression analysis were performed using SPSS 21.0, and the following conclusions were drawn based on the results. Results: First, it was found that the sympathy of taekwondo leaders had a significant effect on exercise im-mersion. Second, the sympathy of taekwondo leaders has been shown to have a significant effect on perceived competitiveness. Third, it was shown that exercise immersion has a significant effect on perceived competitive-ness. Conclusion: First, since this study was conducted with players participating in the tournament from February to March 2022, it is somewhat difficult to generalize. Second, since this study was conducted with athletes par-ticipating in the official competition hosted by the Korea Taekwondo Association, it is somewhat difficult to gen-eralize to the public confidence of all leaders. Therefore, in follow-up studies, it is judged that more diverse results will be obtained if a long period of time is selected and the study is conducted.

Kinematic Analysis of Reverse Rotation DOLGAECHAGI in TAEKWONDO

Boseob Heo,Jeongki Lee,Hyotaek Lee J-INSTITUTE 2020 International Journal of Martial Arts Vol.5 No.2

Purpose: The purpose of this study is to provide basic data for technical performance by analyzing and pre-senting differences in major kinematic factors in the take-off and flying phase and finally hitting phase with the national and non-national male demonstration team members as subjects. Method: The subjects of this study were six members of the national team and six members of the non-national team with more than three years of experience in the demonstration. Prior to the experiment, consent was obtained from each subject, and the Kinematic data was collected using 14 digital cameras. The statistical processing of this study used Excel 2018 to calculate the mean and standard deviation(M±SD) and statistical pro-grams to verify the differences in kinematic variables of the reverse rotation dolgaechagi. Shapiro-Wilk verifica-tion was performed to verify the normality of the collected data, and independent t-test and Mann-Whitney U test were performed to analyze the effect on kinematic parameters of the reverse rotation dolgaechagi of the national and non-national demonstration team members. The significance level of all statistics is set to α=.05. Results: Experiments have shown that in order to increase the completeness of reverse rotation dolgaechagi, the timing and momentum of the takeoff are required due to the nature of the motion in the takeoff and flying phases and that the maximum body center vertical direction, left and right direction, and forward-and-frontal COM must be balanced to contribute to the overall stability of the body after rapid rotation. Force ankle joint and knee joint and maximum bend on hip joint are needed to move upward and complete a perfect reverse rotation dolgaechagi. Conclusion: we found that, due to the nature of the reverse rotating dolgaechagi, the timing and momentum of the takeoff are needed to accurately secure the target position, and the role of balancing the body after a quick rotation and keeping the balance of the maximum body center vertical, left and right, and front and back are important factors to contribute to the stability of the entire body. We believe that further research is needed on the instantaneous speed of the body center, muscle activity needed, and analysis on the differences of the success and failure when reverse rotation is performed, which will greatly contribute to the improvement of the perfor-mance of the Taekwondo demonstration.

Impact of Taekwondo Athlete Leader’s Leadership Type (Transformative, Servant) on Sport Attitude and Perceived Competitiveness

Boseob Heo,Hyeongil Yeo,Kyunghwan Choi J-INSTITUTE 2022 International Journal of Martial Arts Vol.7 No.1

Purpose: In this study, we analyze the influence of leadership of a leader on sports attitude and perceived competitiveness in taekwondo athletes, and provide a practical basis for changing the physical and emotional attitudes of athletes and improving their competitiveness. Attempts to provide materials. Method: In 2021, the Korean Taekwondo Association was registered as a player registration, and while partic-ipating in the 51st Korean Taekwondo Association Long-term Group Opposition Taekwondo Tournament, players enrolled in high school were selected as recruitment teams and an online questionnaire was distributed. Finally, a total of 232 copies of materials were used. As for the data processing method, frequency analysis, exploratory factor analysis, reliability analysis, correlation analysis, and multiple regression analysis were performed using Excel 2016 and SPSS 21.0, and the following conclusions were drawn based on the results. Results: First, among the leadership types of taekwondo competition leaders, servant leadership had a positive impact on sports attitude (physical) factors. Second, of the types of leadership of taekwondo athletes, transforma-tive leadership has had a positive impact on sporting attitude (emotional) factors. Third, the leadership of taekwondo athletic leaders (transformative, servant) had a positive impact on the perceived competitiveness fac-tors. Fourth, the sports attitude (physical and emotional) factors of taekwondo athletes had a positive effect on the perceived competitiveness factors. Conclusion: Based on the restrictions of this research, I would like to present the direction to the next research as follows. First, since this study was conducted on athletes in the details of taekwondo, it is somewhat difficult to generalize to all taekwondo people. Therefore, in subsequent studies, it will be judged to be more diverse if the results are derived not only from the competition but also from the birds, demonstrations, and the leadership of the defeat leader. Secondly, while this study is registered as an athlete of the Korea Taekwondo Association, it is somewhat difficult to represent all athletes because the population is composed of high school athletes. Therefore, in the subsequent research, it is judged that various results will be obtained if the athletes in the field of physical education who are not registered as athletes and the athletes who retired and belong to the university or elementary school are included in the research.

An Analysis of Perceived Value, Happiness, and Revisit Intention of eSports Competition Watch: A Study on the Disabled and Non-Disabled Persons

Kyunghwan Choi(Kyunghwan Choi),Boseob Heo(Boseob Heo) J-INSTITUTE 2022 Kinesiology Vol.7 No.2

Purpose: This study analyzed and identified differences in perceived value, happiness, and revisit intention according to eSports game viewing for the disabled and non-disabled. Accordingly, it is meaningful to provide basic data for effectiveness and expansion of the base of eSports for the disabled as an eSports viewing market. Method: For about six months from January to June 2022, visitors to the competition organized by the Korea eSports Federation for the Disabled and the Korea eSports Association(Presidential Boat Amateur, D-war, Heungtaryeong eSports Competition) were selected, and a total of 384 copies were distributed for the final anal-ysis. As for the data processing method, frequency analysis, factor analysis, reliability analysis, and t-test were performed. And the following conclusions were drawn. Results: First, the differences in perceived value, happiness, and revisit intention of eSports visitors according to gender were not statistically significant. Second, there was a statistically significant difference in perceived value and happiness factors according to the presence or absence of disabilities of eSports visitors, but there was no significant difference in revisit inten-tion. Conclusion: Through the results of this study, the effectiveness of e-sports viewing was confirmed. In addition, it was confirmed that there was no difference in perceived beliefs and attitudes between the disabled and the non-disabled. Accordingly, e-sports research for the disabled should be continuously conducted.

Kinematic Analysis of Jasebaqeo Pparunbal Dollyuchagi Motion in TAEKWONDO

Seonghun Kim,Boseob Heo J-INSTITUTE 2021 International Journal of Martial Arts Vol.6 No.3

Purpose: The purpose of this study is to compare and analyze pparun bal dollyuchagi(fast spin kick) motion of Taekwondo players, divided as outstanding ones and unskilled ones, to provide kinematic information on Taekwondo kicks and pparun bal dollyuchagi motion, and analyze differences in kicks between comparative groups. Method: The subjects of this study are Taekwondo players in their 20s who are attending the Taekwondo de-partment at K University, five outstanding ones who have won prizes at domestic competitions and five unskilled ones who have not won competitions. Prior to the experiment, the subjects were asked for consent and explained how to proceed with the experiment. Kinematic data were collected using eight digital cameras. Statistical pro-cessing in this study was conducted using SPSS 22.0 software, and statistical analysis values were calculated as mean(M) and standard deviation(SD). An independent sample t-test was conducted to analyze the differences between groups, and the statistical significance probability was set to p<0.05. Results: There was no significant difference in the total execution time during the comparative analysis be-tween the skilled and unskilled players of Jasebaqeo Pparunbal Dollyuchagi, and significant differences were found in the left and right variables of body center. Also, significant differences were found for each event in the hip, knee, and ankle joints of the lower extremities. Conclusion: According to the experiment, it is necessary to select an efficient hitting distance to improve the com- pleteness of the pparun bal dollyuchagi motion, and to hit the target, the width of the center of mass dis-place- ment on the left and right sides must be small and balanced without shaking. The knee joint and ankle joint should be quickly extended when striking a target, then vertically moved quickly to perform a perfect motion. This study is considered significant in that it provided fundamental data necessary for the efficient performance of kicks.

A Study on the Actual Condition and Improvement of PRIVATE QUALIFICATION CERTIFICATE : Sports-Oriented

Hyeongil Yeo,Boseob Heo J-INSTITUTE 2021 Regulations Vol.6 No.2

Purpose: The purpose of this study is to check the status and the actual condition of sports private certificates registration of sports members of the Korea Sports Association after the implementation of the Framework Act on Qualifications and to provide data on how to improve the registration system by deriving non-compliance factors. Method: This study was conducted using qualitative case study methodology based on the literature research methodology, and to derive the results of the study, related literature data on sports private certificates was collected to understand the activity content and status. It collected materials through academic papers, reports, books, cases, media articles, and Internet searches, and conducted in-depth interviews with analysis of literature materials to find current status of issuance, operational status, and how to improve. Research participants were selected and data were collected to explore specific research methods for the study. Results: First, it was found that after the special announcement of the Korea Sports Association, the qualifi-cation registration of from 6 Korea Sports Association affiliated organizations in 2018 to 19 in 2019 were sur-veyed, and it has been steadily increasing so far, affecting the awareness of the registration system, but detailed management measures are needed. Second, non-affiliated organizations have as many as 40 sports registration courses in the order of gymnastics, golf, and swimming, and gymnastics are issued by 114 organizations with the popularisation of health gymnastics and job prospects expected, suggesting an increase in the number of issuers, and it aims at promoting it to a private official recognition qualification by securing public confidence and man-aging transparency. Third, the priorities for improving the sports private qualification system were false, exag-gerated, and false advertising on the issue of private sports licences, considered the biggest problem. It was found that improvements were needed in the order of a certificate of qualifications and qualification system of unregistered publishing organizations, lack of linked education after obtaining qualifications, and poor operation of educational training institutions. As a way to raise awareness of sports private certificates, legal action by unregistered institutions is most urgent, followed by various strategic measures for publicity boost, inducement of registration through intervention of relevant ministries(Ministry of Culture, Sports and Tourism), and estab-lishment of a system for nurturing professional qualification personnel.. Fourth, establishment of an exclusive management department of the Ministry of Culture, Sports and Tourism and the Korea Sports Council are the most urgent tasks to create a sports private qualification system, and measures need to be taken in the order of improvement of law for qualification system and the system, continuous research, and government intervention. Conclusion: According to this study, a sports private qualification system can be improved, first, through de-tailed management measures, secondly, through public confidence and transparency management, thirdly, by improving poor operation of private certificates and creating strategic measures through relevant ministries intervention, fourthly, by establishing a dedicated management department to create a sports private qualifica-tion system and by improving the qualification system law and system and regulation of the qualification market through government intervention.

Asia FOOTBALL Centrality Analysis Using Pass Information: Centered on the 2018 Russia World Cup

Seonghun Kim,Jieung Kim,Boseob Heo,Beeoh Lim,Jungkyun Byeun J-INSTITUTE 2021 Kinesiology Vol.6 No.3

Purpose: The core purpose of this study was to objectively evaluate the performance of Asian countries partic-ipating in the 2018 FIFA World Cup using social network analysis. Method: The subject of study included 5 Asian countries participated in the 2018 FIFA World Cup in Russia, using pass data for each position based on official data provided by FIFA. The processed data are made into symmetric matrices and the research perform a centrality analysis using Ucinet6, a social network program. Results: The results of the study are as follows. First, when the pass success rate was more than 80%, the ball possession rate was more than 50%, and the actual ball possession time was also confirmed to have 30 minutes. Second, the centrality analysis confirmed that players with high degree centrality also have a high closeness cen-trality, which can be information that can objectively evaluate major attack directions and key players. Conclusion: The results of this study can be used as an objective indicator to identify key players and evaluate their performance through passes by players in team sports events. However, due to the nature of the World Cup games, it is difficult to secure a lot of match data by country, and it is a pity that players who have not participat-ed in the games due to injury cannot be evaluated. Based on the results shown in this research, we hope that it will be used as a new evaluation method to identify key players and objectively analyze each country s game pat-terns in order to advance to the 2022 Qatar World Cup finals, and it can be used as an analysis method that can objectively evaluate not only soccer games but also other team sports games through social network analysis.

A Biomechanical Analysis of the CLOSED CHANGE STEP Motion in Waltz by Pre-Taping and Post-Taping

Jungil Seo,Jeongki Lee,Boseob Heo J-INSTITUTE 2021 Kinesiology Vol.6 No.2

Purpose: The purpose of this study is to quantitatively identify the characteristics of lower extremity movements before and after taping during the closed change step motion in waltz for dance sports experts by using the functional taping, which is widely known for the prevention and treatment of the sports injuries, and also provide coaches and athletes with the appropriate posture and injury prevention by offering the basic data for the technical performance. Method: As for the subjects of this study, 8 female experts with 5 or more years of experience in dance sports in the metropolitan city of B were selected and experimented. Prior to entering the experiment, a consent was secured from each subject, and the method of the experiment was explained, while the kinematic data were collected by using 5 digital cameras. As for the statistical processing of this study, the joint angle data were calculated before and after taping during the closed change step motion by using the SPSS 24.0. First, the mean and standard deviation were obtained, and in order to analyze the difference before and after taping, and time and phase, a corresponding sample t-test was conducted. The level of significance was set to α=.05. Results: As a result of the experiment, it turned out that taping did stabilize the joint balance rather than causing problems for the mobility of the lower extremity joints via a biomechanical analysis of the lower extremities during the closed change step in motion waltz, and it is determined that it may have significance in that it provided the basic data required for the injury prevention as well as for the efficient performance of movements. Conclusion: Gathering the conclusions as such, it is determined that taping may have significance in that it stabilizes the joint balance during the closed change step motion in waltz and provides the basic data required for the efficient performance of movement and the injury prevention.

Kinetic Analysis of the Dwigongjungdorachagi in Taekwondo

Jeongki Lee,Hyotaek Lee,Boseob Heo J-INSTITUTE 2022 International Journal of Martial Arts Vol.7 No.1

Purpose: The purpose of this study is to provide the basic data for technical performance by analyzing and presenting the differences in major kinematic factors in the jumping phase, flight phase, and finally striking phase for national team and non-national team male demonstration members. Method: As for the subjects of this study, 6 members of the national team and 6 members of the non-national team who had more than 3 years of demonstration experience were selected and tested. Before entering the ex-periment, a consent was secured from each subject, the experimental procedure was explained, and kinematic data were collected by using 14 high-speed digital cameras. For the statistical processing of this study, the mean and standard deviation (M±SD) were calculated by using Excel 2018, and the statistical program (SPSS 22.0, SPSS Inc., Chicago, IL, USA) was used to verify the difference in kinematic variables of dwigongjungdorachagi motion. The Shapiro-Wilk verification was conducted to confirm the normality of the collected data, and according to the results, an independent sample test (independent t-test), test (Mann-Whitney U-test), and the correlation analysis were performed. Results: There was a statistically significant difference in P3 (p<.05) of the required time phase. There was a statistically significant difference in E4 (p<.05) of the (Z) movement displacements. There was a statistically significant difference in the right E4 (p<.05) of the right ankle joint angle. The correlation coefficient between the body center’s displacement and flight time showed a high correlation and showed a statistically significant difference (r=.953, P=.001). The correlation coefficient between the angular velocity and the body center’s displacement showed a high correlation and showed a statistically significant difference (r=.809, p=.001). The correlation coefficient between the angular velocity and flight time showed a high correlation and a statistically significant differ-ence (r=.809, p=.001). Conclusion: As a result of the experiment, the swing speed of the arm and the angle of the knee joint before jumping during dwigongjungdorachagi provided a great force to project the human body into the air and also had the effect of increasing vertical ascent. Hence, it is apparent that the coordination of movements is a very important factor.

Analysis of the Kinetic Difference of DOLGAECHAGI Between Taekwondo Kyorugi Players and Demonstrators

Dongmin Kim,Hyeongil Yeo,Boseob Heo J-INSTITUTE 2021 International Journal of Martial Arts Vol.6 No.2

Purpose: The purpose of this study is to provide the basic data for the appropriate technique performance by analyzing and presenting the differences in and among the major kinematic factors of Taekwondo’s Dolgaechagi movements between Taekwondo Kyorugi planers and the members of the demonstration team. Method: As for the subjects of this study, from among the Taekwondo players attending the Taekwondo De-partment of K University, 5 Kyorugi players and 5 demonstrators, among the Kyorugi players, who have entered the national team selection process and the demonstration team of the selection process. Prior to entering the experiment, a consent was secured from each subject, while the experiment implementation procedures were explained, and the kinetic data were collected by using 8 high speed digital cameras. Results: As for the time required for the situation(P2), the time required for the demonstration team was greater than that of the Kyorugi players, and there was a statistically significant difference(p<.05). As for the center of mass up and down(Z) movement displacement, in E3, the demonstrators turned out to be higher than the Kyorugi players, and there was a statistically significant difference(p<.05). In E4, the demonstrators turned out to be higher than the Kyorugi players, and there was a statistically significant difference(p<.05). The differ-ence of the hip joint’s angle turned out to be higher in E4 for the Kyorugi players than the demonstrators(p<.05), and there was a statistically significant difference(p<.05). Conclusion: As a result of the experiment, to improve the level of completion of the Dolgaechagi kick, the demonstrator needs to jump high from and above the ground and also have the sports ability in the jumping state for the accurate movement, and at the time of executing the Dolgaechagi kick, in using the force for the ankle and knee joints, he or she turned out to execute the Dolgaechagi movement after bending the hip joint to the maximum. Kyorugi players need low and prompt sports ability since they strike the target by relying on fast rotations from the groun, and at the time of executing the Dolgaechagi kick, rather than using the force of the ankle and knee joints, they turned out to execute the Dolgaechagi movement without a maximum bend for the hip joint’s angle as they strike the target by relying on fast rotations.In order to efficiently perform kicks based on such results, the Kyorugi players need a training by using fast rotations on the ground, and the demonstrators need strength and flexibility trainings in making jumps high on the ground.