Work patterns dictate energy demands and thermal strain during wildland firefighting

Wilderness & Environmental Medicine
John S CuddyBrent C Ruby

Abstract

The purpose of this investigation was to characterize the effects of self-selected work activity on energy expenditure, water turnover, and thermal strain during wildland fire suppression. A secondary aim was to contrast current data with data collected 15 years ago using similar methods to determine whether job demands have changed. Participants (n=15, 26±3 years, 179±6 cm, 78.3±8.6 kg) were monitored for 3 days for total energy expenditure, water turnover, core and chest skin temperature, physical activity, and heart rate. Participants arrived to the mobile laboratory each morning, submitted a nude weight, ingested a temperature transmitter, provided a urine sample, and were equipped with a physiological and activity monitor. Participants completed live wildland fire suppression during their work shifts. Mean core temperature was 37.6°±0.2°C, mean chest skin temperature was 34.1°±1.0°C, mean heart rate was 112±13 beats/min, and the mean physiological strain index score was 3.3±1.0. Wildland firefighters spent 49±8%, 39±6%, and 12±2% in the sedentary, light, and moderate-vigorous intensity categories, respectively. The mean total energy expenditure was 19.1±3.9 MJ/d, similar to 1997 (17.5±6.9 MJ/d). The mean water turnover in ...Continue Reading

References

Oct 3, 2003·Medicine and Science in Sports and Exercise·Brent C RubySonja Tysk
Jun 5, 2007·Medicine and Science in Sports and Exercise·John S CuddyBrent C Ruby
Aug 22, 2008·Wilderness & Environmental Medicine·John S CuddyBrent C Ruby
Oct 11, 2008·Medicine and Science in Sports and Exercise·Scott J MontainBrent C Ruby
Mar 8, 2011·Wilderness & Environmental Medicine·John S CuddyBrent C Ruby
Jun 10, 2011·International Archives of Occupational and Environmental Health·Jose A Rodríguez-MarroyoJosé G Villa
Dec 7, 2011·Experimental Physiology·Michael N SawkaRobert W Kenefick

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Citations

Nov 23, 2015·Journal of Thermal Biology·Brianna LarsenBrad Aisbett
Feb 18, 2017·International Journal of Environmental Research and Public Health·Grace E VincentSally A Ferguson
Dec 8, 2017·Journal of Occupational and Environmental Medicine·Zachary McGillisCéline Larivière
May 5, 2018·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Sean R NotleyGlen P Kenny
Nov 30, 2018·Journal of Occupational and Environmental Medicine·Roberto C NavaChristine M Mermier
Jan 15, 2019·Journal of Occupational and Environmental Medicine·Robert H CokerBrent C Ruby
Oct 29, 2019·Journal of Occupational and Environmental Hygiene·Scott A HennTimothy Reinhardt
Apr 17, 2020·Occupational and Environmental Medicine·Curtis W Noonan, Erin O'Brien Semmens
Jan 31, 2020·Occupational and Environmental Medicine·Molly R WestJoseph W Domitrovich
Aug 21, 2019·Frontiers in Physiology·Belén Carballo-LeyendaJose A Rodríguez-Marroyo
Apr 4, 2019·The International Journal of Behavioral Nutrition and Physical Activity·Stephanie A PrinceJennifer L Reed
Oct 6, 2016·International Journal of Environmental Research and Public Health·Stephanie E ChappelNicola D Ridgers
Sep 13, 2017·Frontiers in Physiology·Belén Carballo-LeyendaJose A Rodríguez-Marroyo
Aug 30, 2018·Frontiers in Physiology·Belén Carballo-LeyendaJose A Rodríguez-Marroyo
Oct 12, 2019·Journal of Occupational and Environmental Hygiene·Andrew P HuntDaniel C Billing
Jan 13, 2021·Wilderness & Environmental Medicine·Alejandro M RosalesBrent C Ruby
May 4, 2020·Wilderness & Environmental Medicine·Alexander N MarksBrent C Ruby
Mar 27, 2021·Journal of Occupational and Environmental Medicine·Katherine S ChristisonCharles L Dumke
Mar 27, 2021·Journal of Occupational and Environmental Medicine·Nuno Lajoso-SilvaJosé Maria Cancela Carral
Apr 14, 2021·Journal of Science and Medicine in Sport·Riana R PryorDouglas J Casa
Jun 1, 2021·Wilderness & Environmental Medicine·Joseph A SolBrent C Ruby
Jun 3, 2021·International Journal of Environmental Research and Public Health·Belén Carballo-LeyendaJose A Rodríguez-Marroyo
Jun 7, 2021·Journal of Occupational and Environmental Medicine·Alejandro M RosalesBrent C Ruby

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