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Head cooling is desirable but not essential for preventing heat strain in pilots.
Aviat Space Environ Med. 1989 Nov; 60(11):1056-62.AS

Abstract

Liquid-cooled garments (LCGs) are being considered for reducing heat strain in pilots. While head cooling has been shown to be thermally efficient and subjectively desirable, it is technically difficult to achieve. This laboratory study was carried out to see if head cooling in addition to torso cooling is a necessity. Six male subjects wore a cooling vest and cap under summer flight clothing on three occasions in a climatic chamber set at Tdb = 42 degrees C, Twb = 32 degrees C (RH = 50%), Tg = 52 degrees C at head position, WBGT = 35 degrees C. Cooling conditions were: control (CTRL), no fluid circulation; condition VEST, only torso cooling; condition HEAD, both torso and head cooling. Cooling fluid was circulated from a reservoir maintained at 10 degrees C. Subjective thermal comfort assessments confirmed the desirability of head cooling, but performance measurements and physiological measurements of thermal strain showed no statistically significant differences between conditions VEST and HEAD. It was concluded that head cooling is desirable but not essential.

Authors+Show Affiliations

Defence and Civil Institute of Environmental Medicine, Downsview, Ont., Canada.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

2818395

Citation

Frim, J. "Head Cooling Is Desirable but Not Essential for Preventing Heat Strain in Pilots." Aviation, Space, and Environmental Medicine, vol. 60, no. 11, 1989, pp. 1056-62.
Frim J. Head cooling is desirable but not essential for preventing heat strain in pilots. Aviat Space Environ Med. 1989;60(11):1056-62.
Frim, J. (1989). Head cooling is desirable but not essential for preventing heat strain in pilots. Aviation, Space, and Environmental Medicine, 60(11), 1056-62.
Frim J. Head Cooling Is Desirable but Not Essential for Preventing Heat Strain in Pilots. Aviat Space Environ Med. 1989;60(11):1056-62. PubMed PMID: 2818395.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Head cooling is desirable but not essential for preventing heat strain in pilots. A1 - Frim,J, PY - 1989/11/1/pubmed PY - 1989/11/1/medline PY - 1989/11/1/entrez SP - 1056 EP - 62 JF - Aviation, space, and environmental medicine JO - Aviat Space Environ Med VL - 60 IS - 11 N2 - Liquid-cooled garments (LCGs) are being considered for reducing heat strain in pilots. While head cooling has been shown to be thermally efficient and subjectively desirable, it is technically difficult to achieve. This laboratory study was carried out to see if head cooling in addition to torso cooling is a necessity. Six male subjects wore a cooling vest and cap under summer flight clothing on three occasions in a climatic chamber set at Tdb = 42 degrees C, Twb = 32 degrees C (RH = 50%), Tg = 52 degrees C at head position, WBGT = 35 degrees C. Cooling conditions were: control (CTRL), no fluid circulation; condition VEST, only torso cooling; condition HEAD, both torso and head cooling. Cooling fluid was circulated from a reservoir maintained at 10 degrees C. Subjective thermal comfort assessments confirmed the desirability of head cooling, but performance measurements and physiological measurements of thermal strain showed no statistically significant differences between conditions VEST and HEAD. It was concluded that head cooling is desirable but not essential. SN - 0095-6562 UR - https://www.unboundmedicine.com/medline/citation/2818395/Head_cooling_is_desirable_but_not_essential_for_preventing_heat_strain_in_pilots_ DB - PRIME DP - Unbound Medicine ER -