Korean Journal of Sport Biomechanics (한국운동역학회지)

Korean Society of Sport Biomechanics (한국운동역학회)
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Comparisons of Foot Pressure Patterns between Experienced Skiers and Intermediate Skiers during Alpine Skiing

알파인 스킹 시 상급 스키어와 중급 스키어 간의 족저압력 패턴 비교

  • Kim, Joo-Nyeon (Department of Physical Education, Graduate School of Korea National Sport University) ;
  • Yoo, Si-Hyun (Department of Physical Education, Graduate School of Korea National Sport University) ;
  • Ha, Sung-He (Department of Physical Education, Graduate School of Korea National Sport University) ;
  • Kim, Jin-Hae (Department of Physical Education, College of Sport Science of Korea National Sport University) ;
  • Ryu, Ji-Seon (Department of Health and Exercise Science, College of Lifetime Sport of Korea National Sport University) ;
  • Park, Sang-Kyoon (Department of Physical Education, College of Sport Science of Korea National Sport University) ;
  • Yoon, Suk-Hoon (Department of Community Sport, College of Lifetime Sport of Korea National Sport University)
  • 김주년 (한국체육대학교 대학원 체육학과) ;
  • 류시현 (한국체육대학교 대학원 체육학과) ;
  • 하성희 (한국체육대학교 대학원 체육학과) ;
  • 김진해 (한국체육대학교 스포츠과학대학 체육학과) ;
  • 류지선 (한국체육대학교 생활체육대학 운동건강관리학과) ;
  • 박상균 (한국체육대학교 스포츠과학대학 체육학과) ;
  • 윤석훈 (한국체육대학교 생활체육대학 사회체육학과)
  • Received : 2014.02.26
  • Accepted : 2014.03.24
  • Published : 2014.03.31

Abstract

This study investigated foot pressure patterns between experienced skiers and intermediate skiers during alpine skiing. Five experienced skiers and five intermediate skiers participated in this study. Foot pressure measurement system was used to measure vertical ground reaction force (vGRF) and contact area under the six plantar regions. Each participant was asked to perform basic parallel turns and carved turns on a $18^{\circ}$ groomed slope. Each right turn was divided into the initiation phase, the steering phase 1 and 2. For the initiation phase of the basic parallel turns, significantly greater contact area was found on the LRF and RRF of the intermediate skiers (p<.05) and significantly greater vGRF was found on the LRF of the intermediate skiers (p<.05). Also significantly greater vGRF and contact area were found on the LRF and RRF of the intermediate skiers at the steering phase 1 (p<.05) and on the LRF of the intermediate skiers at the steering phase 2 (p<.05). For the carved turns, significantly greater vGRF and contact area were found on the LRF and RRF of the intermediate skiers at all three phase (p<.05). On the other hand, significantly greater vGRF was found on the RFF of the experienced skiers at the steering phase 1 (p<.05). Also significantly greater vGRF and contact area were found on the RMF of the experienced skiers at the steering phase 2 (p<.05). In order to increase performance, we suggest that the intermediate skiers should be unweighted at the initiation phase and shift the body weight to the forefoot of the outer foot at the steering phase 1. Also, the outer ski should be loaded more than the both skis at the steering phase 1 and 2.

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Acknowledgement

Supported by : 국민체육진흥공단

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