Study of M-learning system for middle school

Park, Y.C.

doi:10.1109/ieem.2008.4738075

Cited by 3 publications

(1 citation statement)

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“…창던지기는 선수의 체격적인 면이 중요하며 동시에 다른 투척 종목과는 운동 반경 이 넓어 순발력, 조정력, 근력과 같은 체력적인 면이 중요하게 작용된다. 또한, 창던지기 기록은 투사 속도, 투사 각도, 투사 높이와 같은 창을 투사 할 때 작용하는 역학적 요인의 기술적 요소가 중요한 요인으로 작용한다 (Hur, 2001, Park, 2008.…”

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Three-dimensional Comparison of Selected Kinematics between Female Medalists and Korean Female Javelin Thrower at IAAF World Championships, Daegu 2011

Kim¹,

Chae

Lim³

et al. 2011

Korean Journal of Sport Biomechanics

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The purpose of the study was to compare selected kinematic variables between the female medalists and a Korean female javelin thrower at the IAAF World Championships, Daegu 2011. Three medalists and one Korean javelin thrower that participated in the Championships were videotaped using three high-speed cameras (300 frames/s, EX-F1 Exilim, Casio, Japan). This study identified the performance differences between the two groups. The results showed that the Korean female javelin thrower (KFJT) clearly had a greater delivery phase time than the female medalists. In order to throw farther, a thrower must exert a greater force to accelerate their body in a short time. This study also found that the release velocity of the KFJT was lower than that of the female medalists.The KFJT showed evidence of using her extremities differently to achieve the maximum release velocity. When comparing the inclination angle of the trunk across javelin throwers, the lowest value was recorded in the KFJT. Because the trunk position at release plays a significant role in determining the release height and release velocity, the KFJT should not rely on her upper extremities to achieve as high a release velocity as possible.

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