방향전환 동작에서 접근속도와 발 디딤형태가 하지분절에 미치는 영향 (Effects of Approach Speed and Foot Strike Patterns on Lower Extremities in the Side Cutting)

서지정보

· 발행기관 : 한국사회체육학회
· 수록지 정보 : 한국사회체육학회지 / 84호 / 477 ~ 486페이지
· 저자명 : 신제민

초록

Purpose: The purpose of this study is to analyze the effect of the chnage of approaching speed and foo t strike patterns on the lower extremities in a side cutting. Inad dition, it is to observe the relationship betwee n the foot strike pattern and the pelvic rotation.
Method: The subjects were 11 healthy male college students. Kinematic and kinetic variables were analyzed by 3D cinematography in the weight support phase during the 90°side cutting. The side cutting was performed under the conditions of speed change (preferred and maximum speed) and foot strike pattern change (forefoot and rearfoot strike).
Results: The pelvic rotation angle at the touch-down was increased in the preferred speed and rearfoot strike. The maximum ground reaction force significantly differed only in the vertical axis, and this value increased as the approaching speed increased. There were some significant differences in the flexion and medial rotation of the hip and knee joints under the two conditions, ubt there was no difference in the frontal plan e movement. The ratio of the coupling angle consisting of ankle flexion and pelvic rotation did not show any difference in the four phases.
Conclusion: This study shows that even if the foot strike patterns are tienntionally performed differently in the side cutting, it does not affect variables related to injuries, such as knee valgus angle and moment, and the relationship between the ankle and pelvic movement.

영어초록

Purpose: The purpose of this study is to analyze the effect of the chnage of approaching speed and foo t strike patterns on the lower extremities in a side cutting. Inad dition, it is to observe the relationship betwee n the foot strike pattern and the pelvic rotation.
Method: The subjects were 11 healthy male college students. Kinematic and kinetic variables were analyzed by 3D cinematography in the weight support phase during the 90°side cutting. The side cutting was performed under the conditions of speed change (preferred and maximum speed) and foot strike pattern change (forefoot and rearfoot strike).
Results: The pelvic rotation angle at the touch-down was increased in the preferred speed and rearfoot strike. The maximum ground reaction force significantly differed only in the vertical axis, and this value increased as the approaching speed increased. There were some significant differences in the flexion and medial rotation of the hip and knee joints under the two conditions, ubt there was no difference in the frontal plan e movement. The ratio of the coupling angle consisting of ankle flexion and pelvic rotation did not show any difference in the four phases.
Conclusion: This study shows that even if the foot strike patterns are tienntionally performed differently in the side cutting, it does not affect variables related to injuries, such as knee valgus angle and moment, and the relationship between the ankle and pelvic movement.

참고자료

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