한국운동역학회지 (Korean Journal of Applied Biomechanics)

  • 제23권1호
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  • Pages.25-35
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  • 2013
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  • 1226-2226(pISSN)
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  • 2093-9752(eISSN)
한국운동역학회 (Korean Society of Applied Biomechanics)
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야구 타격시 숙련자와 미숙련자의 족저압력 분석

Plantar Pressure in Skilled and Unskilled Players during Baseball Batting

  • 문원호 (신라대학교 대학원 체육학부) ;
  • 이중숙 (신라대학교 의생명과학대학 체육학부) ;
  • 김창현 (신라대학교 대학원 체육학부) ;
  • 장영민 (신라대학교 대학원 체육학부) ;
  • 정진우 (동아대학교 의과대학 응급의학교실)
  • Moon, Won-Ho (Division of Physical Education, Graduate School of Silla University) ;
  • Lee, Joong-Sook (Division of Physical Education, College of Medical and Life Sciences, Silla University) ;
  • Kim, Chang-Hyun (Division of Physical Education, Graduate School of Silla University) ;
  • Jang, Young-Min (Division of Physical Education, Graduate School of Silla University) ;
  • Jeong, Jin-Woo (Department of Emergency Medicine, College of Medicine, Dong-A University)
  • 투고 : 2012.12.01
  • 심사 : 2013.03.25
  • 발행 : 2013.03.31
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초록

This study examined 24 right-handed amateur baseball players. Twelve who had played baseball for more than 6 years were grouped as skilled players, while 12 who had played for 1-3 years were the unskilled player group. The swing motion was divided into four event phases: stance, backswing, impact, and follow-through. The mean and maximum plantar pressure, center of pressure, and ground reaction force were measured during each event phase. The mean and standard deviations for each variables were calculated and differences were validated with the independent sample t-test. A p-value <0.05 was considered statistically significant. The results were as follows. 1)The ideal stance is a stable, balanced position with more than 65% of weight on the right foot. There was significant difference in mean left plantar pressure, while the maximal plantar pressure and mean right plantar pressure did not differ significant. 2)The effective backswing of a skilled player is comprised a rightward shift in weight to build maximum energy. More than 90% of the weight was on the right foot. There was a significant difference in the mean left plantar pressure, while the maximal plantar pressure and mean right plantar pressure did not differ significantly. 3) For an effective impact, a rapid shift in weight to the left foot is essential, so that a power hit is obtained. Significant difference in the mean and maximum plantar pressures of both feet were observed. 4)Follow-through requires wight balance, more on the right than the left, without leaning leftward. There was no significant difference in the mean or maximum plantar pressure. 5)The center of plantar pressure should move from the center of the foot to the toe. 6)The analyses of the ground reaction force suggest that a good swing involves a gradual shift in weight to the right side and a rapid leftward shift at impact. Good balance, with the center of gravity on the right side at follow-through, is also required.

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