Fife Gabriel P, O'sullivan David M, Lee Sae Yong
a Department of Health & Human Performance , Texas State University , San Marcos , TX , USA.
b Department of Sports Science , Pusan National University , Busan , Republic of Korea.
J Sports Sci. 2018 Jul;36(13):1461-1464. doi: 10.1080/02640414.2017.1398406. Epub 2017 Nov 3.
The purpose was to compare rotational and linear head accelerations as a result of taekwondo kicks and punches. Taekwondo athletes executed five repetitions of the turning kick, spinning hook kick, hook punch, straight punch, and jab punch to a Hybrid III Crash Test Dummy head-neck complex. A tri-axial accelerometer and an angular rate sensor were mounted inside the Hybrid III head to measure resultant linear (RLA) and rotational accelerations. The Hybrid III was fixed to a height-adjustable frame and fitted with protective taekwondo headgear. Dummy head height was positioned to each participant's standing height. Acceleration data were processed in accordance with SAE J211-1.There was no significant multivariate difference in RLA but the effect was not clear. Univariate follow-up analysis showed a significant difference in RLA but the effect was also not clear. There was no difference in rotational acceleration. The highest RLA and rotational acceleration were produced, in order, by the turning kick, hook kick, hook punch, straight punch, and jab. These data are clinically important as they provide a better understanding of the biomechanical injury measures and support for improved headgear testing methodology.
目的是比较跆拳道踢腿和拳击动作导致的头部旋转加速度和线性加速度。跆拳道运动员对混合III型碰撞试验假人的头颈部复合体进行了五次转身踢、旋风踢、勾拳、直拳和刺拳动作。在混合III型头部内部安装了一个三轴加速度计和一个角速率传感器，以测量合成线性加速度（RLA）和旋转加速度。混合III型假人固定在一个高度可调的框架上，并配备了跆拳道防护头盔。假人头的高度调整到每个参与者的站立高度。加速度数据按照SAE J211-1进行处理。RLA没有显著的多变量差异，但效果不明确。单变量后续分析显示RLA有显著差异，但效果也不明确。旋转加速度没有差异。转身踢、勾踢、勾拳、直拳和刺拳依次产生了最高的RLA和旋转加速度。这些数据在临床上很重要，因为它们能让人更好地理解生物力学损伤指标，并为改进头盔测试方法提供支持。
