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Kinetic Analysis of the Dwigongjungdorachagi in Taekwondo

이정기|Hyotaek Lee|허보섭
동북아학술저널연합 (Northeast Asian Studies Journal Institute (J-INSTITUTE))|2022.03|International Journal of Martial Arts|제7권 제1호|pp. 68-78

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참고문헌

키워드

AngleTime RequiredVelocityDwigongjungdorachagiCenter of Mass

초록

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.

Abstract

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.

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관련 논문AI추천

Analysis of the Kinetic Difference of DOLGAECHAGI Between Taekwondo Kyorugi Players and DemonstratorsBoseob Heo, Dongmin Kim, Hyeongil Yeo동북아학술저널연합 · International Journal of Martial Arts2021 · 제6권 제2호Kinematic Analysis of Reverse Rotation DOLGAECHAGI in TAEKWONDOBoseob Heo, Hyotaek Lee, Jeongki Lee동북아학술저널연합 · International Journal of Martial Arts2020 · 제5권 제2호Kinematic Analysis of Jasebaqeo Pparunbal Dollyuchagi Motion in TAEKWONDOBoseob Heo, Seonghun Kim동북아학술저널연합 · International Journal of Martial Arts2021 · 제6권 제3호Biomechanical Analysis of TAEKWONDO ‘Geodeup Yeopchagi’ KickHeo Bo-seob, Lee Hyo-taek, Lee Jeong-ki동북아학술저널연합 · International Journal of Martial Arts2019 · 제4권 제2호Biomechanical Analysis of SPIN KICKS for Establishing the Technical Difficulty of Free style Poomsae in Taekwondo유시현동북아학술저널연합 · International Journal of Martial Arts2021 · 제6권 제1호태권도 돌려차기 시 중앙·전방형 겨룸새 형태에 따른 운동학적 변인 비교분석강성철, 이강문, 정태운대한무도학회 · 대한무도학회지2011 · 제13권 제1호

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