McLellan T M, Frim J
Defence and Civil Institute of Environmental Medicine, North York, Ontario.
Can J Appl Physiol. 1994 Dec;19(4):379-99. doi: 10.1139/h94-031.
The Canadian Forces chemical defence protective clothing can induce an overwhelming strain on one's ability to regulate body temperature. Recently a number of investigations have been completed at the Defence and Civil Institute of Environmental Medicine that focused initially on understanding the interaction of metabolic rate, ambient temperature, and ambient vapour pressure on the severity of heat strain associated with wearing the protective clothing. This paper presents a summary of these initial studies together with an overview of different attempts to reduce heat strain during exercise in a hot environment. Factors such as improved aerobic fitness or a period of dry heat acclimation have little if any benefit on tolerance time while wearing the clothing during light or moderate exercise. The best solution to the problem of heat strain remains the use of microclimate conditioning (personal cooling), and these techniques have been successful for Naval and Air Force personnel. For our Land Forces, however, microclimate conditioning is not feasible until a lightweight high-energy power source is developed.
加拿大军队的化学防御防护服会对人体调节体温的能力造成极大压力。最近，国防与民用环境医学研究所完成了多项调查，这些调查最初聚焦于了解代谢率、环境温度和环境蒸汽压对穿着防护服时热应激严重程度的相互作用。本文总结了这些初步研究，并概述了在炎热环境中运动时减少热应激的不同尝试。在轻度或中度运动时穿着防护服的情况下，诸如提高有氧适能或进行一段时间干热适应等因素对耐受时间几乎没有益处。解决热应激问题的最佳方法仍然是使用微气候调节（个人冷却），这些技术已在海军和空军人员中取得成功。然而，对于我们的陆军部队来说，在开发出轻便的高能量电源之前，微气候调节是不可行的。
