Measuring head kinematics in football: correlation between the head impact telemetry system and Hybrid III headform.
Measuring head kinematics in football: correlation between the head impact telemetry system and Hybrid III headform.
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DOI：
10.1007/s10439-011-0422-2
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发表时间：
2012-01
影响因子：
3.8
通讯作者：
Chu, Jeffrey J.
中科院分区：
文献类型：
--
作者：
Beckwith, Jonathan G.;Greenwald, Richard M.;Chu, Jeffrey J.
在过去的十年中，技术的进步使研究人员能够通过使用两种主要方法测量在游戏期间持续的头部撞击来评估脑震荡生物力学：（1）开放领域头部接触的实验室重建，以及（2）仪器头盔。本研究的目的是将头部撞击遥测（HIT）系统（Simbex，NH）记录的头部运动学测量值与在模拟NFL中发生的撞击的条件下从混合III（HIII）人体测量人头模型获得的测量值相关联。进行线性回归分析，以关联峰值线性加速度、峰值旋转加速度、Gadd严重度指数（GSI）和从仪表化头盔和HIII获得的头部损伤标准（GSI 15）。计算了头盔冲击位置与HIII头部线加速度方向之间的平均绝对定位误差。HIT系统高估了0.9%的混合III峰值线性加速度和低估了6.1%的峰值旋转加速度的影响网站和速度以前确定的NFL发生在比赛中。所有冲击的加速度测量值均相关;然而，线性（r2 = 0.903）高于旋转（r2 = 0.528），主要是由于前面罩试验部位的HIT系统旋转加速度估计值较低。严重性措施GSI和HIC也被发现是相关的，虽然小于峰值线性加速度，两个系统之间的总体差异小于6.1%的任何措施。系统之间的平均绝对撞击位置差为31.2 ± 46.3°（约0.038 ± 0.050 m），小于试验中撞击器表面的直径。在头盔严重偏斜（距离头部2.54-7.62 cm）的情况下，仪表头盔准确测量了撞击位置，但高估了HIII记录的所有严重性指标。这项研究的结果表明，这两种研究方法的测量结果是相关的，并提供了一个链接，可用于更好地解释未来使用任何一种技术的研究结果。
Over the last decade, advances in technology have enabled researchers to evaluate concussion biomechanics through measurement of head impacts sustained during play using two primary methods: (1) laboratory reconstruction of open-field head contact, and (2) instrumented helmets. The purpose of this study was to correlate measures of head kinematics recorded by the Head Impact Telemetry (HIT) System (Simbex, NH) with those obtained from a Hybrid III (HIII) anthropometric headform under conditions that mimicked impacts occurring in the NFL. Linear regression analysis was performed to correlate peak linear acceleration, peak rotational acceleration, Gadd Severity Index (GSI), and Head Injury Criterion (HIC15) obtained from the instrumented helmet and HIII. The average absolute location error between instrumented helmet impact location and the direction of HIII head linear acceleration were also calculated. The HIT System overestimated Hybrid III peak linear acceleration by 0.9% and underestimated peak rotational acceleration by 6.1% for impact sites and velocities previously identified by the NFL as occurring during play. Acceleration measures for all impacts were correlated; however, linear was higher (r2 = 0.903) than rotational (r2 = 0.528) primarily due to lower HIT System rotational acceleration estimates at the frontal facemask test site. Severity measures GSI and HIC were also found to be correlated, albeit less than peak linear acceleration, with the overall difference between the two systems being less than 6.1% for either measure. Mean absolute impact location difference between systems was 31.2 ± 46.3° (approximately 0.038 ± 0.050 m), which was less than the diameter of the impactor surface in the test. In instances of severe helmet deflection (2.54–7.62 cm off the head), the instrumented helmet accurately measured impact location but overpre-dicted all severity metrics recorded by the HIII. Results from this study indicate that measurements from the two methods of study are correlated and provide a link that can be used to better interpret findings from future study using either technology.
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影响因子：
4.8
作者：
Guskiewicz, Kevin M.;Mihalik, Jason P.;Hooker, Daniel N.
通讯作者：
Hooker, Daniel N.
影响因子：
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作者：
Guskiewicz, KM;Marshall, SW;Jordan, BD
通讯作者：
Jordan, BD
DOI：
10.1097/00005373-200005000-00020
发表时间：
2000-05-01
影响因子：
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作者：
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通讯作者：
Lewis, LM
DOI：
10.1249/mss.0b013e3181dd9156
发表时间：
2010-11-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
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作者：
Broglio, Steven P.;Schnebel, Brock;Zimmerman, Jerrad
通讯作者：
Zimmerman, Jerrad
DOI：
10.1115/1.4000249
发表时间：
2010-01-01
影响因子：
1.7
作者：
Gwin, Joseph T.;Chu, Jeffery J.;Greenwald, Richard M.
通讯作者：
Greenwald, Richard M.