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[[alternative]]Biomechanical Analysis of Primary School Children With Flatfoot in Selected Landing movement

By [[author]]陳裕元, Jacky [[author]]Chen, 陳裕元 and Jacky Chen


[[abstract]]The purposes of this study were to analyze and compare the kinematic and kinetic variables including the vertical jumping ability and the strategies absorbing mechanism in landing between elementary school flatfoot students and normal foot students. We were interesting in the performances when they were executed three types of landing which were vertical jump, landing standing and rebound jump. Fifteen elementary school students(eight flatfoot students and seven normal foot students)were recorded simultaneously by using a Redlake camera(125Hz)and a Kistler force platform(model 9287,1200Hz). The two groups of three different landing movements were tested by a t-test(α=.05). The kinematical data indicated that there were no significant differences between two groups when they were performing vertical jump. The kinetics results showed the force of the PK2 during landing in the landings that flatfoot students’ were greater than normal foot students. The 50 microsecond impulses of the flatfoot students were greater than the normal students. So we can make a conclusion that the flatfoot students’ jumping ability is the same with normal foot students. But the landing strategies of flatfoot students are different with the normal students. The flatfoot students have greater possibility to get injury in landing than normal foot students. So, when the flatfoot students take exercise or training, they had better to choose the high-absorbing shoes to avoid injury.

Topics: 扁平足, 垂直跳, 著地, 生物力學, flatfoot, vertical jump, landing, biomechanics, [[classification]]59
Year: 2010
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