• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>PLoS Clinical Trials >Physiological Tolerance Times while Wearing Explosive Ordnance Disposal Protective Clothing in Simulated Environmental Extremes
【2h】

Physiological Tolerance Times while Wearing Explosive Ordnance Disposal Protective Clothing in Simulated Environmental Extremes

机译：在模拟环境极端环境中穿着爆炸性武器处置防护服时的生理耐受时间

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Explosive ordnance disposal (EOD) technicians are required to wear protective clothing to protect themselves from the threat of overpressure, fragmentation, impact and heat. The engineering requirements to minimise these threats results in an extremely heavy and cumbersome clothing ensemble that increases the internal heat generation of the wearer, while the clothing’s thermal properties reduce heat dissipation. This study aimed to evaluate the heat strain encountered wearing EOD protective clothing in simulated environmental extremes across a range of differing work intensities. Eight healthy males [age 25±6 years (mean ± sd), height 180±7 cm, body mass 79±9 kg, V˙O2max 57±6 ml.kg−1.min−1] undertook nine trials while wearing an EOD9 suit (weighing 33.4 kg). The trials involved walking on a treadmill at 2.5, 4 and 5.5 km⋅h−1 at each of the following environmental conditions, 21, 30 and 37°C wet bulb globe temperature (WBGT) in a randomised controlled crossover design. The trials were ceased if the participants’ core temperature reached 39°C, if heart rate exceeded 90% of maximum, if walking time reached 60 minutes or due to fatigue/nausea. Tolerance times ranged from 10–60 minutes and were significantly reduced in the higher walking speeds and environmental conditions. In a total of 15 trials (21%) participants completed 60 minutes of walking; however, this was predominantly at the slower walking speeds in the 21°C WBGT environment. Of the remaining 57 trials, 50 were ceased, due to attainment of 90% maximal heart rate. These near maximal heart rates resulted in moderate-high levels of physiological strain in all trials, despite core temperature only reaching 39°C in one of the 72 trials.
机译：爆炸物处理（EOD）技术人员必须穿着防护服，以保护自己免受超压，破碎，撞击和发热的威胁。最大限度地减少这些威胁的工程要求导致了非常沉重且繁琐的服装组合，从而增加了穿着者的内部发热量，而服装的热性能却降低了散热。这项研究旨在评估在一系列不同工作强度下在模拟环境极端条件下穿着EOD防护服时遇到的热应变。八名健康男性[年龄25±6岁（平均±sd），身高180±7 cm，体重79±9 kg，V˙O2max57±6 ml 。 kg -1。 min −1 ]穿着EOD9服（重33.4千克）进行了9次试验。试验涉及在以下两种环境条件（21、30和37°C的湿球温度（WBGT））下，分别在2.5、4和5.5km⋅h -1 的跑步机上行走，控制分频器设计。如果参与者的体温达到39°C，如果心率超过最高温度的90％，如果步行时间达到60分钟或由于疲劳/恶心，则停止试验。忍耐时间为10-60分钟，在较高的步行速度和环境条件下，忍耐时间明显缩短。在总共15个试验（21％）中，参与者完成了60分钟的步行；但是，这主要是在21°C WBGT环境中较慢的步行速度下实现的。在其余的57个试验中，由于达到90％的最大心率而终止了50个试验。尽管在72项试验之一中，核心温度仅达到39°C，但在所有试验中，这些接近最高的心率导致中等程度的生理紧张。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号