Measuring Blunt Force Head Impacts in Athletes
Measuring Blunt Force Head Impacts in Athletes
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DOI：
10.1093/milmed/usz334
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发表时间：
2020-01-01
影响因子：
1.2
通讯作者：
Stemper, Brian
中科院分区：
文献类型：
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作者：
Bartsch, Adam;Dama, Rajiv;Stemper, Brian
虽然脑震荡仍然是急性和慢性损伤的主要来源，脑震荡损伤机制和风险函数是不明确的。这种定义的缺乏阻碍了开发标准化脑震荡监测、安全测试和保护对策的努力。为了克服这一知识差距，我们已经开发，测试，并部署了一个头部撞击监测护齿套（IMM）system.Materials和方法IMM系统首先在731实验室测试校准。与参比品相比，实验室IMM数据拟合线性模型，结果接近理想线性模型，形式为y = x + 0，R-2 = 1。接下来，在涉及n = 54名美国业余足球和拳击运动员的现场比赛中，IMM收集了数万个事件。使用信号处理和美国国立神经疾病和中风研究所/美国国立卫生研究院公共数据元素方法相结合，确认了总共890次真正的正面头部撞击。结果峰值标量线性加速度和峰值角加速度的中位数和第99百分位数分别为20和50 g以及1，700和4，600 rad/s（2）。没有运动员被诊断为concussion.Conclusions虽然这些数据是有用的初步人类耐受极限，一个更大的人口必须被用来量化现实世界的剂量反应作为影响的大小，方向，位置和积累的函数。这项工作正在进行中。
Introduction Although concussion continues to be a major source of acute and chronic injuries, concussion injury mechanisms and risk functions are ill-defined. This lack of definition has hindered efforts to develop standardized concussion monitoring, safety testing, and protective countermeasures. To overcome this knowledge gap, we have developed, tested, and deployed a head impact monitoring mouthguard (IMM) system.Materials and Methods The IMM system was first calibrated in 731 laboratory tests. Versus reference, Laboratory IMM data fit a linear model, with results close to the ideal linear model of form y = x + 0, R-2 = 1. Next, during on-field play involving n = 54 amateur American athletes in football and boxing, there were tens of thousands of events collected by the IMM. A total of 890 true-positive head impacts were confirmed using a combination of signal processing and National Institute of Neurological Disorders and Stroke/National Institutes of Health Common Data Elements methods.Results The median and 99th percentile of peak scalar linear acceleration and peak angular acceleration were 20 and 50 g and 1,700 and 4,600 rad/s(2), respectively. No athletes were diagnosed with concussion.Conclusions While these data are useful for preliminary human tolerance limits, a larger population must be used to quantify real-world dose response as a function of impact magnitude, direction, location, and accumulation. This work is ongoing.