头部加速的性别差异 在执法部门的事件 纠正 кадет队员
Carly R Smith1,2, Enora Le Flao1,2,3, Samantha N DeAngleo1,2
1The Ohio State University Wexner Medical Center, College of Medicine, School of Health and Rehabilitation Sciences, Columbus, OH, USA.
Annals of biomedical engineering
|June 20, 2025
概括
与男性相比,女性执法学员 (LEC) 在训练期间经历的头部加速事件 (HAE) 较少. 这些发现表明,目前的培训方法可以有效地减轻女性的HAE暴露风险.
科学领域:
- 运动医学 运动医学
- 神经学 神经学
- 法医科学 法医科学 法医科学
背景情况:
- 执法学员 (LEC) 接受涉及主体控制技术的培训.
- 这种训练可能会导致重复的头部冲击,记录为头部加速事件 (HAE).
- 之前的研究表明,HAE的性别和/或性别差异在不同的运动中有所不同.
研究的目的:
- 调查和比较执法学员在训练期间对HAE暴露的性别差异.
- 分析与性别相关的HAE频率和规模.
主要方法:
- 头部加速事件 (HAE) 从82名民用LEC (16名女性) 收集,使用仪器口罩.
- 峰值线性加速 (PLA) 和峰值旋转速度 (PRV) 在HAE>5g的性别之间进行了比较.
- 统计分析包括混合效应线性模型和负二项式回归来解释重复测量和对队列效应的控制.
主要成果:
- 与男性学员相比,女性学员表现出较低的峰值线性加速 (PLA) (中位数PLA:女性=10.9g,男性=12.3g).
- 在每名运动员暴露的HAE数量中没有发现统计学意义上的性别差异 (中位数:女性=10,男性=14).
- 峰值旋转速度 (PRV) 也没有显著的性别差异 (中位数PRV:女性=7.4rad/s,男性=7.9rad/s).
结论:
- 在受试者控制技术训练期间,HAE频率和幅度的性别差异很小.
- 当观察到差异时,女学员比男学员少频繁且不那么严重的HAE.
- 目前的培训实践,包括性别和技能匹配配对,似乎有效地降低了女性的HAE暴露风险.
相关概念视频
Average Acceleration
10.8K
The importance of understanding acceleration spans our day-to-day experiences, as well as the vast reaches of outer space and the tiny world of subatomic physics. In everyday conversation, to accelerate means to speed up. For instance, we are familiar with the acceleration of our car; the harder we apply our foot to the gas pedal, the faster we accelerate. The greater the acceleration, the greater the change in velocity over a given time. Acceleration is widely seen in experimental physics. In...
10.8K
Relative Motion Analysis - Acceleration
437
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
437
Measuring Acceleration Due to Gravity
700
Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
700
Variation in Acceleration due to Gravity near the Earth's Surface
2.5K
An object's apparent weight is its weight measured by a spring balance at its location. It is different from its true weight, the force with which the Earth pulls it, because of the Earth's rotation. Mathematically, an object's apparent weight equals its true weight minus the centripetal force that keeps it in a circular motion along with the Earth's surface every 24 hours.
The difference between the true and apparent weights is proportional to the square of the Earth's...
The difference between the true and apparent weights is proportional to the square of the Earth's...
2.5K
The Stanford Prison Experiment
23.7K
The famous and controversial Stanford Prison Experiment, conducted by social psychologist Philip Zimbardo and his colleagues at Stanford University, demonstrated the power of social roles, social norms, and scripts.
23.7K
Relative Motion Analysis using Rotating Axes - Acceleration
405
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
Time differentiation is...
405


