The goal of the study was to evaluate how repetitive head traumas sustained by athletes in contact sports depend on sport and level of play. A total of 16 middle school football players, 107 high school football players, and 65 high school female soccer players participated. Players were separated into levels of play: middle school (MS), freshman (FR), junior varsity (JV), junior varsity-varsity (JV-V), and varsity (V). xPatch sensors were used to measure peak translational and angular accelerations (PTA and PAA, respectively) for each head acceleration event (HAE) during practice and game sessions. Data were analyzed using a custom MATLAB program to compare metrics that have been correlated with functional neurological changes: session metrics (median HAEs per contact session), season metrics (total HAEs, cumulative PTA/PAA), and regressions (cumulative PTA/PAA versus total HAEs, total HAEs versus median HAEs per contact session). Football players had greater session (p<.001) and season (p<.001) metrics than soccer players, but soccer players had a significantly greater player average PAA per HAE than football players (p<.001). Middle school football players had similar session and season metrics to high school level athletes. In conclusion, sport has a greater influence on HAE characteristics than level of play.

该研究的目的是评估运动员在接触运动中遭受的重复性头部外伤如何取决于运动和比赛水平。共有16名初中足球运动员、107名高中足球运动员、65名高中女足球运动员参赛。球员分为不同的比赛级别：中学 (MS)、新生 (FR)、初中校队 (JV)、初中校队-校队 (JV-V) 和校队 (V)。xPatch 传感器用于测量练习和比赛期间每个头部加速度事件 (HAE) 的峰值平移加速度和角加速度（分别为 PTA 和 PAA）。使用自定义 MATLAB 程序分析数据以比较与功能性神经学变化相关的指标：会话指标（每次接触会话的 HAE 中位数）、季节指标（总 HAE、累积 PTA/PAA）、和回归（累积 PTA/PAA 与总 HAE、总 HAE 与每个接触会话的中值 HAE）。足球运动员的训练时间更长（p <.001) 和赛季 ( p <.001) 指标比足球运动员好，但足球运动员每 HAE 的球员平均 PAA 明显高于足球运动员 ( p <.001)。初中足球运动员的训练和赛季指标与高中水平的运动员相似。总之，运动对 HAE 特性的影响大于比赛水平。