Department of Physical Education, Chung-Ang University, Anseong, Republic of Korea.
Br J Sports Med. 2013 May;47(7):447-51. doi: 10.1136/bjsports-2012-091416. Epub 2013 Jan 24.
With over 20 years of taekwondo concussion research highlighting the high incidence of injury, previous studies recommend an investigation of headgear impact attenuation performance.
To examine impact attenuation differences between the anterior, posterior and sides of selected taekwondo headgear brands.
Between-groups.
Biomechanics laboratory.
Five different commercially available taekwondo headgear were selected for impact testing. A 50th percentile Hybrid II Dummy Crash Test head and neck was fitted with the selected helmet and was bolted to a 25 kg steel torso-like structure. Each headgear model was impacted eight times to the anterior, posterior and sides by a 6.75 kg bowling ball at three heights to produce 52.25, 85 and 144 J strikes.
Resultant head linear acceleration.
Two-way (Helmet×Location) mixed analysis of variance with repeated measures on the second factor was performed to determine the differences between headgear by location of impact. There was a two-way (Helmet×Location) interaction for acceleration (η(2)=0.368).
Taekwondo headgear manufacturers and sport governing bodies must consider improving the design of especially anterior helmet properties.
20 多年来，跆拳道脑震荡研究强调了高受伤率，因此先前的研究建议对头盔的冲击衰减性能进行调查。
研究所选跆拳道头盔品牌的前、后和侧面的冲击衰减差异。
组间设计。
生物力学实验室。
选择了五种不同的商业上可用的跆拳道头盔进行冲击测试。将选定的头盔安装在 50 百分位 Hybrid II 假人碰撞测试头颈部上，并将其固定在 25 公斤重的钢体样结构上。每个头盔模型均以三种高度（52.25、85 和 144 J）向头盔的前、后和侧面各撞击 8 次，由 6.75 公斤的保龄球产生冲击。
头部线性加速度的结果。
采用双因素（头盔×位置）混合方差分析和第二因素的重复测量来确定头盔在冲击位置上的差异。加速度存在双因素（头盔×位置）交互作用（η²=0.368）。
跆拳道头盔制造商和体育管理机构必须考虑改进尤其是头盔前部的设计。
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