O'Sullivan David, Fife Gabriel P, Pieter Willy, Lim Taehee, Shin Insik
Division of Sport Science, Pusan National University, Pusan 609-735, Republic of Korea.
Department of Health and Human Performance, Texas State University, San Marcos, TX 78666, USA.
J Sport Health Sci. 2016 Jun;5(2):226-230. doi: 10.1016/j.jshs.2015.01.004. Epub 2015 Apr 28.
The purpose of this study was to compare the effects of various taekwondo kicks and age (school level) in absolute terms and relative body mass on the resultant linear acceleration (RLA) of an instrumented head form.
Forty-eight male (middle school: 16; high school: 16; university: 16) taekwondo athletes were recruited for this study. Subjects performed 10 turning, 10 jump spinning hook, and 10 jump back kicks on a Hybrid II head mounted on a height-adjustable frame.
A 2-way (School × Kick) MANOVA was used to determine the differences in RLA between schools (age groups) by type of kick. There was no univariate School main effect for absolute RLA ( = 0.06) and RLA relative to body mass ( = 0.06). No univariate Kick main effects were found for absolute ( = 0.06) and relative RLA ( = 0.06).
It is of concern that RLA did not significantly differ between school levels, implying that young taekwondo athletes generate similar forces to their adult counterparts, possibly exposing young athletes to an increased risk for head injuries.
本研究旨在比较不同跆拳道踢腿动作、年龄（学校级别）以及相对体重对仪器化头部模型的合成线性加速度（RLA）的影响。
本研究招募了48名男性跆拳道运动员（初中：16名；高中：16名；大学：16名）。受试者在安装在高度可调节框架上的Hybrid II头部模型上进行10次转身踢、10次跳跃旋转钩踢和10次后踢。
采用双向（学校×踢腿动作）多变量方差分析来确定不同学校（年龄组）之间因踢腿动作类型导致的RLA差异。对于绝对RLA（=0.06）和相对于体重的RLA（=0.06），未发现单变量学校主效应。对于绝对RLA（=0.06）和相对RLA（=0.06），未发现单变量踢腿动作主效应。
令人担忧的是，不同学校级别之间的RLA没有显著差异，这意味着年轻的跆拳道运动员产生的力量与成年运动员相似，这可能会使年轻运动员面临头部受伤风险增加的问题。
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