지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.12
- 수록면
- 1,231 - 1,240 (10page)
- DOI
- 10.35159/kjss.2018.12.27.6.1231
이용수
초록· 키워드
오류제보하기
Taekwondo takeoff break will require high duration of flight to smash many targets with a jump. Transforming horizontal energy into vertical energy will be very important factors for jumping such as two steps before takeoff (penultimate) while jumping, one step before takeoff (stride), takeoff grounding, hip joints inside angle when takeoff, back obliquity, driving distance, and time of staying in the air.
Thus, in this study, we look at what factors are used to ensure time of staying in the air from each of the two groups to reveal the difference between the width of the penultimate stride that must be preceded by the takeoff break and the inside angle of hip joints when takeoff. The purpose of this study is to present an effective method of takeoff when performing the takeoff break.
The test participants were selected for seven athletes who are performing in the national team and in the university demonstration team under the judgment sample. The difference analysis between the two groups used independent t-test, to investigate specific factors for each section, by finding a correlation matrix for seven variables, principal component analysis was implemented, and it was based on Kaiser`s proposed unique value of 1.0 or higher. Also, to get the correct loading amount for each variable, the axial rotation was investigated by using the vari-max method and the following conclusions were reached.
The elite demonstration team and university`s demonstration team showed statistically significant differences in two steps before takeoff(p<.005) and duration of flight(p<.002), the inside angle of hip joints when takeoff(p<.000) and driving distance(p<.000). A comparison result of the average values measured by presenting a common jumping front kick task to the two groups, the elite demonstration team"s duration of flight showed about 0.112(sec) higher record.
In takeoff factors that played important roles when performing Taekwondo takeoff break, the first factor was the inside angle of hip joints when takeoff, the second factor was one s tep before takeoff, and the third factor was takeoff grounding moment.
These results can increase the vertical jump force of takeoff foot on the ground when the horizontal velocity at the moment of ground is faster, and it is thought that it will give an important impact on improving duration of flight to increase the horizontal energy up to two steps before takeoff, then control horizontal energy and transform it into vertical energy when carrying out takeoff break.
Thus, in this study, we look at what factors are used to ensure time of staying in the air from each of the two groups to reveal the difference between the width of the penultimate stride that must be preceded by the takeoff break and the inside angle of hip joints when takeoff. The purpose of this study is to present an effective method of takeoff when performing the takeoff break.
The test participants were selected for seven athletes who are performing in the national team and in the university demonstration team under the judgment sample. The difference analysis between the two groups used independent t-test, to investigate specific factors for each section, by finding a correlation matrix for seven variables, principal component analysis was implemented, and it was based on Kaiser`s proposed unique value of 1.0 or higher. Also, to get the correct loading amount for each variable, the axial rotation was investigated by using the vari-max method and the following conclusions were reached.
The elite demonstration team and university`s demonstration team showed statistically significant differences in two steps before takeoff(p<.005) and duration of flight(p<.002), the inside angle of hip joints when takeoff(p<.000) and driving distance(p<.000). A comparison result of the average values measured by presenting a common jumping front kick task to the two groups, the elite demonstration team"s duration of flight showed about 0.112(sec) higher record.
In takeoff factors that played important roles when performing Taekwondo takeoff break, the first factor was the inside angle of hip joints when takeoff, the second factor was one s tep before takeoff, and the third factor was takeoff grounding moment.
These results can increase the vertical jump force of takeoff foot on the ground when the horizontal velocity at the moment of ground is faster, and it is thought that it will give an important impact on improving duration of flight to increase the horizontal energy up to two steps before takeoff, then control horizontal energy and transform it into vertical energy when carrying out takeoff break.
목차
Abstract
Ⅰ. 서론
Ⅱ. 연구방법
Ⅲ. 결과 및 논의
Ⅳ. 결론
참고문헌
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UCI(KEPA) : I410-ECN-0101-2019-692-000303138