Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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The Effect of Gender Difference in Injury Experience on Biomechanical Variables of Lower Extremity during Two Leg Drop Landing

양발 착지 시 성별에 따른 상해 경험이 하지관절의 운동역학적 변인에 미치는 영향

  • Lee, Seong-Yeol (Department of Sports & Wellness Research Center, Yongin University) ;
  • Kwon, Moon-Seok (Sports Convergence Institute, Konkuk University)
  • 이성열 (용인대학교 스포츠.웰니스 연구센터) ;
  • 권문석 (건국대학교 스포츠융복합연구소)
  • Received : 2019.05.27
  • Accepted : 2019.06.12
  • Published : 2019.06.30
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Abstract

The purpose of this study was to investigate the effects of gender difference in injury experience on biomechanical variables of lower extremity during two leg drop landing. 20 male(injury experience=8, non-injury experience=12) and 20 female(injury experience=11, non-Injury Experience=9) in their 20's were selected as subjects. Two-way mixed ANOVA was performed on the biomechanical variables obtained from the two leg drop landing in a 45cm height box and post-test was performed with bonferroni adjustment(p <.05). The results of this study suggest that the group of female who injury experience could induce the reduction of the peak vertical ground reaction force by increasing the valgus and internal rotation of the knee joint and flexion and internal rotation of the hip joint. In the INE(injury non-experienced) female group, the peak knee flexion angle was the smallest, as well as the flexion of the hip joint and the external rotation angle, and the peak vertical ground reaction force was the highest. On the other hand, the INE female group showed high vertical ground reaction force because they did not utilize the knee and hip joints relatively than the IE(injury experienced) female group, this means that it is relatively exposed to the risk of injury. Therefore, it was found that gender difference in injury experience is a factor affecting factors of knee and hip joint movement and peak vertical GRF(ground reaction force).

본 연구는 양발 착지 시 성별에 따른 상해 경험이 무릎과 엉덩관절의 움직임 및 수직 지면반력에 미치는 영향을 분석하는데 목적이 있었다. 20대 남성 20명(상해 경험 8명, 비상해 경험 12명), 여성 20명(상해 경험 11명, 비상해 경험 9명)을 연구대상자로 선정하였다. 높이 45cm 박스에서 양발 착지를 통해 얻어진 운동역학적 변인을 Two-way mixed ANOVA를 실시하였으며, bonferroni adjustment를 이용하여 사후검증 하였다(p<.05). 본 연구결과 상해를 경험한 여성 그룹은 무릎 관절의 외반 및 내측회전 그리고 엉덩관절의 굴곡 및 외측회전 운동을 증가시켜 최대 수직 지면반발력의 감소를 유도할 수 있었던 것으로 판단된다. 상해를 경험하지 않은 여성 그룹의 경우 최대 무릎 굴곡각도가 가장 작게 나타났을 뿐만 아니라 엉덩관절의 굴곡과 외측회전 각도에서 가장 적은 수치를 나타내었고 최대 수직 지면반발력은 가장 높게 나타났다. 반면, 상해를 경험하지 않은 여성 INE 그룹의 경우 IE 그룹에 비해 상대적으로 무릎과 엉덩관절을 활용하지 못함으로서 높은 수직 지면반발력을 나타내었고, 이는 상대적으로 상해 위험성에 많이 노출되어 있음을 의미한다. 따라서 성별에 따른 상해 경험이 무릎과 엉덩관절의 운동과 최대 수직 지면반발력의 크기에 요인들에 영향을 주는 요인들임을 알 수 있었다.

Keywords

HGOHBI_2019_v36n2_424_f0001.png 이미지

Fig. 1. Analysis events & phases

Table 1. Characteristics of subjects

HGOHBI_2019_v36n2_424_t0001.png 이미지

Table 2. Knee joint range of motion(ROM)

HGOHBI_2019_v36n2_424_t0002.png 이미지

Table. 3. Hip joint range of motion(ROM)

HGOHBI_2019_v36n2_424_t0003.png 이미지

Table. 4. Peak Vertical GRF

HGOHBI_2019_v36n2_424_t0004.png 이미지

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