Physiological Responses and Performance of Simulated High-Rise Firefighting

The aim of the study is to determine the physiological effects of breathing apparatus and ascent strategies during a simulated 120-m vertical high-rise firefighting ascent. Twenty-eight firefighters completed four high-rise firefighting trials wearing standard- or extended-duration breathing apparat...

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Bibliographic Details
Published inJournal of occupational and environmental medicine Vol. 66; no. 2; p. 141
Main Authors Stevenson, Richard Daniel Mark, Warwick, Joseph, Bilzon, James Lee John
Format Journal Article
LanguageEnglish
Published United States 01.02.2024
Subjects
Body Temperature
Ethylenediamines
Firefighters
Heart Rate - physiology
Humans
Physical Exertion - physiology
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Summary:The aim of the study is to determine the physiological effects of breathing apparatus and ascent strategies during a simulated 120-m vertical high-rise firefighting ascent. Twenty-eight firefighters completed four high-rise firefighting trials wearing standard- or extended-duration breathing apparatus with continuous ascent (SDBA-C/EDBA-C) or with breaks (SDBA-B/EDBA-B). Task time, heart rate, ratings of perceived exertion, core body temperature, and thermal comfort were recorded at predetermined elevations. Task time took significantly longer during the EDBA-C compared with SDBA-C trial. Heart rate (at 40, 80, and 100 m) was significantly lower in trials following breaks compared with the continuous trials. Core body temperature rose by 0.11°C every 10 m of ascent. During the SDBA trials, 89% to 96% of firefighters activated their low air alarm compared with only 7% in EDBA. Firefighters should wear EDBA beyond 80 m of ascent and are encouraged to take regular breaks.
ISSN:1536-5948
DOI:10.1097/JOM.0000000000003010