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高级雪上运动头盔与专用旋转减震系统的撞击性能比较。

Impact Performance Comparison of Advanced Snow Sport Helmets with Dedicated Rotation-Damping Systems.

机构信息

Biomechanics Laboratory, Legacy Research Institute, Portland, OR, 97232, USA.

Legacy Biomechanics Laboratory, 1225 NE 2nd Ave, Portland, OR, 97215, USA.

出版信息

Ann Biomed Eng. 2021 Oct;49(10):2805-2813. doi: 10.1007/s10439-021-02723-0. Epub 2021 Feb 2.

DOI:10.1007/s10439-021-02723-0
PMID:33528683
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8510952/
Abstract

Rotational acceleration of the head is a principal cause of concussion and traumatic brain injury. Several rotation-damping systems for helmets have been introduced to better protect the brain from rotational forces. But these systems have not been evaluated in snow sport helmets. This study investigated two snow sport helmets with different rotation-damping systems, termed MIPS and WaveCel, in comparison to a standard snow sport helmet without a rotation-damping system. Impact performance was evaluated by vertical drops of a helmeted Hybrid III head and neck onto an oblique anvil. Six impact conditions were tested, comprising two impact speeds of 4.8 and 6.2 m/s, and three impact locations. Helmet performance was quantified in terms of the linear and rotational kinematics, and the predicted probability of concussion. Both rotation-damping systems significantly reduced rotational acceleration under all six impact conditions compared to the standard helmet, but their effect on linear acceleration was less consistent. The highest probability of concussion for the standard helmet was 89%, while helmets with MIPS and WaveCel systems exhibited a maximal probability of concussion of 67 and 7%, respectively. In conclusion, rotation-damping systems of advanced snow sport helmets can significantly reduce rotational head acceleration and the associated concussion risk.

摘要

头部的旋转加速是脑震荡和创伤性脑损伤的主要原因。已经引入了几种头盔的旋转阻尼系统，以更好地保护大脑免受旋转力的伤害。但是，这些系统尚未在雪地运动头盔中进行评估。本研究比较了具有不同旋转阻尼系统的两种雪地运动头盔，即 MIPS 和 WaveCel，以及没有旋转阻尼系统的标准雪地运动头盔。通过将戴有头盔的 Hybrid III 头部和颈部垂直下降到斜砧上，评估了头盔的冲击性能。测试了六种冲击条件，包括两种冲击速度 4.8 和 6.2 m/s 以及三种冲击位置。根据线性和旋转运动学以及预测的脑震荡概率来量化头盔的性能。与标准头盔相比，两种旋转阻尼系统在所有六种冲击条件下都显著降低了旋转加速度，但它们对线性加速度的影响不太一致。标准头盔的脑震荡概率最高为 89%，而带有 MIPS 和 WaveCel 系统的头盔的脑震荡概率最高分别为 67%和 7%。总之，先进的雪地运动头盔的旋转阻尼系统可以显著降低头部的旋转加速度和相关的脑震荡风险。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/d41e8b7d42fd/10439_2021_2723_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/f6bce473e039/10439_2021_2723_Fig1_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/29280485937a/10439_2021_2723_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/81dc33a98296/10439_2021_2723_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/a8b9e65df759/10439_2021_2723_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/596d974717f3/10439_2021_2723_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/d41e8b7d42fd/10439_2021_2723_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/f6bce473e039/10439_2021_2723_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/19e2d04dfde8/10439_2021_2723_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/29280485937a/10439_2021_2723_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/81dc33a98296/10439_2021_2723_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/a8b9e65df759/10439_2021_2723_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/596d974717f3/10439_2021_2723_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b7a8/8510952/d41e8b7d42fd/10439_2021_2723_Fig7_HTML.jpg

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