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Measurement of accelerations experienced by rough stock riders: A model for examining acceleration-induced head injuries in astronauts

机译：粗暴的车手经历的加速度的测量：一种检查宇航员加速度引起的头部受伤的模型

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摘要

Head injuries result in significant morbidity in rough stock rodeo events. Concussions are the most common injury sustained by rough stock riders, representing 50% of all major injuries. A pilot study conducted in 2007 examined head acceleration experienced by two rough stock riders. Ear-mounted tri-axial accelerometers showed a maximum of 26 G experienced by the bull rider, while the bareback rider experienced 46 G. An aim of the current study was to expand upon this pilot study by examining head acceleration experienced by 10 bull riders and 10 bareback riders during the 2009 Houston Livestock Show and Rodeo. Riders were outfitted with two earplugs, one measuring tri-axial linear acceleration and the other tri-axial angular rates. On average, bareback riders experienced a statistically-significant increase in linear acceleration in the x and z axes compared with bull riders. Bareback riders also experienced a statistically-significant increase in angular acceleration in the x and y axes. There was no difference seen between bareback and bull riders in linear head acceleration in the y axis, and the difference in angular rates experienced in the z axis did not reach statistical significance. Another population at risk for injuries due to repetitive acceleration is astronauts. The Russian Soyuz spacecraft can expose astronauts to high accelerative forces during re-entry and up to 10 G during ballistic re-entry. Soyuz landing impact has reached 17 G. The new NASA Aries launch vehicle is predicted to experience thrust-oscillation problems that may affect crew health. A second aim of this study was to apply the test procedure, hardware, and knowledge gained at the rodeo toward the development of a protocol for measuring head acceleration experienced by astronauts. The first step will be implementation of the study hardware and protocol in centrifuge training. Once validated, the hardware and protocol can undergo flight certification for testing on Russian and U.S. spacecraft. This would provide invaluable insight into launch loads, vibration, reentry and impact loads to ensure crew health in the new vehicle design.
机译：头部受伤会导致粗暴的牛仔竞技比赛中的高发病率。脑震荡是粗暴的车手最常遭受的伤害，占所有重大伤害的50％。在2007年进行的一项试点研究检查了两个粗暴的骑手经历的头部加速。耳挂式三轴加速度计显示出公牛骑手最大经历26 G的感觉，而无鞍骑手经历了46 G的感觉。本研究的目的是通过检查10位公牛骑手和在2009年休斯顿牲畜展和牛仔竞技比赛中，有10名无鞍骑士。车手配备了两个耳塞，一个用于测量三轴线性加速度，另一个用于测量三轴角速率。平均而言，与公牛骑手相比，无鞍骑手在x和z轴上的线性加速度在统计上有显着增加。鞍骑手在x和y轴上的角加速度也有统计上的显着增加。在y轴上，无鞍骑行者和公牛骑手之间的线性头部加速度没有差异，在z轴上遇到的角速度差异也没有达到统计学意义。重复加速可能导致受伤的另一个风险是宇航员。俄罗斯的联盟号飞船在重返过程中可使宇航员承受高加速度，而在弹道再进入过程中则可使宇宙飞船承受高达10 G的力。联盟号的着陆影响已达到17G。新的NASA白羊座运载火箭预计会遇到可能影响机组人员健康的推力振荡问题。这项研究的第二个目的是将在牛仔竞技比赛中获得的测试程序，硬件和知识应用于开发一种测量宇航员所经历的头部加速度的协议。第一步将是在离心机培训中实施研究硬件和协议。验证通过后，硬件和协议即可进行飞行认证，以在俄罗斯和美国的航天器上进行测试。这将提供有关发射载荷，振动，折返和冲击载荷的宝贵见解，以确保新车辆设计中的乘员健康。

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  • 作者

    Mathers, Charles Hood.;

  • 作者单位

    The University of Texas Medical Branch Graduate School of Biomedical Sciences.;

  • 授予单位 The University of Texas Medical Branch Graduate School of Biomedical Sciences.;
  • 学科 Occupational safety.
  • 学位 M.P.H.
  • 年度 2009
  • 页码 46 p.
  • 总页数 46
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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