3차원분석법을 이용한 Standing-Jump-Heading의 Kinematics적 분석 = KINEMATICS ANALYSIS OF STANDING-JUMP-HEADING

다국어 초록 (Multilingual Abstract)

The purpose of the present study was to clarify the kinematics characteristics of standing-jump-hearding by means of three-dimensional analysis of cinematography. Twenty male students were participated in the experiment as subjects. They consisted of 10 soccer players as a skilled group, and 10 control students which did never belong the soccer club as an unskilled group. Each subject was instructed to jump by two legs for the ball which suspened with ball-pendulum. Then, the ball height was adjusted to 80% of maximum jump height for each subject. The movements of standing-jump-heading were filmed with two 16mm high speed cameras that set at perpendicular position.
From the obtained results, the characteristics of standing-jump-heading was summarized as follow
1) From comparison between skilled and unskilled groups, skilled subjects showed significantly higher practical displacements during the pre-impact and post-impact phases.
2) The velocities of head and shoulder part of the body were significantly higer in skilled subjects. But focused on the velocity of hip in skilled subjects, negative velocity appeared, change of velocity was lover than unskilled. The higher impact velocities in skilled subjects were seemed that the head and shoulder rotated about center of gravity.
3) It is considered that acceleration at impact is substituted for developed force. Than, the accelerations of head, shoulder and hip in skilled subjects were 14.6, 2.8 and 1.4 time in unskilled subjects, respectively.
It is concluded that to perfrom standing-jump-heading, skilled subjects made their upper bodies and heads rotate strongly about center of gravity.

목차 (Table of Contents)

• Abstract
• Ⅰ. 서론
• Ⅱ. 연구내용과 방법
• 1. 연구내용
• 1) 피험자
• 2) 분석대상의 동작
• 2. 연구방법
• 1) 3차원분석을 위한 자료수집
• 2) 3차원분석의 방법
• 3) 평활화(Smoothing)
• 4) 좌표입력의 test-retest
• 5) 통계학적인 검증
• Ⅲ. 결과
• 1. 폼(Form)의 관찰
• 2. 점프 동작중의 실이동속도
• 1) 컴퓨터해석을 한 변위의 형태
• 2) 전 피검자에 대한 수량적 분석
• Ⅳ. 고찰
• 1. 폼(Form)
• 2. 컴퓨터에 의한 3차원해석의 헤딩동작
• 3. 가속도의 비교
• Ⅴ. 결론
• 참고문헌