한국운동역학회지 (Korean Journal of Applied Biomechanics)

  • 제25권1호
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  • Pages.29-37
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  • 2015
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  • 1226-2226(pISSN)
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  • 2093-9752(eISSN)
한국운동역학회 (Korean Society of Applied Biomechanics)
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드롭랜딩 시 착지형태에 따른 충격흡수구간의 운동역학적 특성

The Biomechanical Properties of the Shock Absorption Phase during Drop Landing According to Landing Types

  • 박규태 (인천대학교 예술체육대학 체육학부) ;
  • 유경석 (초당대학교 예체능계열 사회체육학부)
  • Park, Gu-Tae (Devision of Sport Science, College of Arts and Physical Education, Incheon National University) ;
  • Yoo, Kyoung-Seok (Division of Sports and Leisure Studies, School of Arts and Physical Education, Chodang University)
  • 투고 : 2015.01.30
  • 심사 : 2015.03.27
  • 발행 : 2015.03.31
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초록

Objective : The purpose of this study was to investigate the biomechanical properties of shock absorption strategy and postural stability during the drop landing for each types. Methods : The motions were captured with Vicon Motion Capture System, with the fourteen infra-red cameras (100Hz) and synchronized with GRF(ground reaction force) data(1000Hz). Ten male soccer players performed a drop landing with single-leg and bi-legs on the 30cm height box. Dependent variables were the CoM trajectory and the Joint Moment. Statistical computations were performed using the paired t-test and ANOVA with Turkey HSD as post-hoc. Results : The dominant leg was confirmed to show a significant difference between the left leg and right leg as the inverted pendulum model during Drop Landing(Phase 1 & Phase 2). One-leg drop landing type had the higher CoM displacement, the peak of joint moment with the shock absorption than Bi-leg landing type. As a lower extremity joint kinetics analysis, the knee joint showed a function of shock absorption in the anterior-posterior, and the hip joint showed a function of the stability and shock absorption in the medial-lateral directions. Conclusion : These findings indicate that the instant equilibrium of posture balance(phase 1) was assessed by the passive phase as Class 1 leverage on the effect of the stability of shock absorption(phase 2) assessed by the active phase on the effect of Class 2 leverage. Application : This study shows that the cause of musculo-skeletal injuries estimated to be focused on the passive phase of landing and this findings could help the prevention of lower damage from loads involving landing related to the game of sports.

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