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The effects of hydration on cognitive performance during a simulated wildfire suppression shift in temperate and hot conditions

journal contribution
posted on 04.09.2019, 00:00 by Michael Cvirn, J Dorrian, Bradley Smith, Grace Vincent, Sarah Jay, Gregory Roach, Charli Sargent, B Larsen, B Aisbett, Sally Ferguson
© 2019 The effects on dehydration and cognitive performance from heat and/or physical activity are well established in the laboratory, although have not yet been studied for personnel working in occupations such as wildland firefighting regularly exposed to these types of conditions. This study aimed to investigate the effects of temperature and dehydration on seventy-three volunteer firefighters (35.7 ± 13.7 years, mean ± standard deviation) during a simulation of wildfire suppression under either control or hot (18–20; or 33–35 °C) temperature conditions. Results showed cognitive performance on the psychomotor vigilance task declined when participants were dehydrated in the heat and Stroop task performance was impaired when dehydrated late in the afternoon. Firefighters may be at risk of deteriorations in simple cognitive functions in the heat whilst dehydrated, although may also experience impairments in complex cognitive functions if dehydrated late in the day, irrespective of the environmental temperature.

Funding

Category 4 - CRC Research Income

History

Volume

77

Start Page

9

End Page

15

Number of Pages

7

eISSN

1872-9126

ISSN

0003-6870

Publisher

Pergamon Press, Uk

Peer Reviewed

Yes

Open Access

No

Acceptance Date

28/12/2018

External Author Affiliations

University of South Australia; Deakin University

Author Research Institute

Appleton Institute

Era Eligible

Yes

Journal

Applied Ergonomics

Exports