Measurement of head impacts in collegiate football players: Relationship between head impact biomechanics and acute clinical outcome after concussion
Measurement of head impacts in collegiate football players: Relationship between head impact biomechanics and acute clinical outcome after concussion
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DOI：
10.1227/01.neu.0000306103.68635.1a
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发表时间：
2007-12-01
期刊：
影响因子：
4.8
通讯作者：
Hooker, Daniel N.
中科院分区：
文献类型：
--
作者：
Guskiewicz, Kevin M.;Mihalik, Jason P.;Hooker, Daniel N.
目的：探讨I组大学生足球运动员脑震荡后头部加速度和撞击部位与临床症状、神经心理和姿势稳定性的关系。方法：在88名大学生足球运动员的头盔中植入加速计进行前瞻性现场研究。实时收集了2004至2006年全国大学生体育协会足球赛季期间所有头部碰撞的直线和旋转加速度。结果：13例脑震荡患者发生脑震荡，撞击强度从60.51g到168.71 g不等。线性回归分析显示，撞击强度(直线或旋转加速度)或撞击部位与症状严重程度、姿势稳定性或神经认知功能的改变没有显著关系(P&gT；结论：我们的研究结果表明，足球运动员会受到各种程度的头部撞击，急性症状严重程度、姿势稳定性和神经心理功能的临床测量似乎在很大程度上与撞击的幅度和位置无关。由于导致脑震荡的撞击的大小和位置不同，以及其他因素，如亚震荡撞击的频率和以前的脑震荡次数，可能很难建立一个适用于所有足球运动员的脑震荡损伤阈值。
OBJECTIVE: To determine the relationship between recorded head accelerations and impact locations and acute clinical outcome of symptomatology, neuropsychological, and postural stability tests after cerebral concussion in Division I collegiate football players.METHODS: A prospective field study was used in which accelerometers were embedded in the football helmets of 88 collegiate football players. Linear and rotational accelerations of all head impacts sustained over the course of 2004 to 2006 National Collegiate Athletic Association football seasons were collected in real-time. Change scores were calculated on clinical measures from the players' preseason baseline to postinjury (within 48 h) and regressed against the recorded linear and rotational accelerations of the head at the time of the concussion.RESULTS: Thirteen concussions were recorded ranging in impact magnitudes of 60.51 to 168.71 g. Linear regression showed no significant relationships between impact magnitude (linear or rotational acceleration) or impact location and change scores for symptom severity, postural stability, or neurocognitive function (P > 0.05).CONCLUSION: Our findings suggest that football players are concussed by impacts to the head that occur at a wide range of magnitudes and that clinical measures of acute symptom severity, postural stability, and neuropsychological function all appear to be largely independent of impact magnitude and location. Because of the varying magnitudes and locations of impacts resulting in concussion as well as other factors such as the frequency of subconcussive impacts and number of previous concussions, it may be difficult to establish a threshold for concussive injury that can be applied to all football players.