干旱区生态环境知识资源中心(Arid): Heat Strain with Two Different Ventilation Vests During a Simulated 3-Hour Helicopter Desert Mission

Arid

DOI	10.3357/AMHP.5761.2021
	Heat Strain with Two Different Ventilation Vests During a Simulated 3-Hour Helicopter Desert Mission
	Gronkvist, Mikael; Mekjavic, Igor; Ciuha, Ursa; Eiken, Ola
通讯作者	Gronkvist, M (corresponding author), KTH, Environm Physiol, Royal Inst Technol, Berzelius Vag 13, SE-17165 Solna, Sweden.
来源期刊	AEROSPACE MEDICINE AND HUMAN PERFORMANCE
ISSN	2375-6314
EISSN	2375-6322
出版年	2021
卷号	92 期号:4 页码:248-256
英文摘要	BACKGROUND: The study investigated the heat strain of personnel operating in the rear cabin of a helicopter during desert-climate missions, and to what extent the strain can be mitigated by use of battery-driven ventilation vests. METHODS: Eight men undertook 3-h simulated flight missions in desert conditions (45 degrees C, 10% humidity, solar radiation). Each subject participated in three conditions wearing helicopter flight equipment, including body armor, and either: a ventilation vest with a 3-dimensional mesh (Vent-1), a ventilation vest with a foam sheet incorporating channels to direct the air flow (Vent-2), or a T-shirt (NoVent); each mission comprised a 10-min walk, followed by sitting for 30 min, kneeling on a vibration platform for 2 h, and finally 30 min of sitting. Core temperature, heart rate, skin temperatures and heat flux, oxygen uptake, sweating rate, and subjective ratings were recorded. Evaporative capacity and thermal resistance of the garments were determined using a thermal manikin. RESULTS: All subjects completed the NoVent and Vent-1 conditions, whereas in the Vent-2 condition, one subject finished prematurely due to heat exhaustion. The increase in core temperature was significantly (P <= 0.01) greater in Novent (0.93 degrees C) and Vent-2 (0.88 degrees C) than in Vent-1 (0.61 degrees C). Evaporative capacity was significantly higher for Vent-1 (7.8 g . min(-1)) than for NoVent (4.1 g . min(-1)) and Vent-2 (4.4 g . min(-1)). DISCUSSION: Helicopter personnel may be at risk of heat exhaustion during desert missions. The risk can be reduced by use of a ventilation vest. However, the cooling efficacy of ventilation vests differs substantially depending on their design and ventilation concept.
英文关键词	ambient air ventilation evaporative cooling heat strain mitigation microclimate cooling system thermal comfort
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000631921500006
WOS类目	Biophysics ; Public, Environmental & Occupational Health ; Medicine, Research & Experimental
WOS研究方向	Biophysics ; Public, Environmental & Occupational Health ; Research & Experimental Medicine
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349306
作者单位	[Gronkvist, Mikael; Mekjavic, Igor; Ciuha, Ursa; Eiken, Ola] Royal Inst Technol, Sch Chem Biotechnol & Hlth, Swedish Aerosp Physiol Ctr, Div Environm Physiol, Stockholm, Sweden; [Gronkvist, Mikael; Mekjavic, Igor; Ciuha, Ursa; Eiken, Ola] Jozef Stefan Inst, Dept Automat Biocybernet & Robot, Environm Physiol Lab, Ljubljana, Slovenia
推荐引用方式 GB/T 7714	Gronkvist, Mikael,Mekjavic, Igor,Ciuha, Ursa,et al. Heat Strain with Two Different Ventilation Vests During a Simulated 3-Hour Helicopter Desert Mission[J],2021,92(4):248-256.
APA	Gronkvist, Mikael,Mekjavic, Igor,Ciuha, Ursa,&Eiken, Ola.(2021).Heat Strain with Two Different Ventilation Vests During a Simulated 3-Hour Helicopter Desert Mission.AEROSPACE MEDICINE AND HUMAN PERFORMANCE,92(4),248-256.
MLA	Gronkvist, Mikael,et al."Heat Strain with Two Different Ventilation Vests During a Simulated 3-Hour Helicopter Desert Mission".AEROSPACE MEDICINE AND HUMAN PERFORMANCE 92.4(2021):248-256.