Psychophysiological Responses in Emergency Medical Technician Students during Simulated Work Activities in a Hot Environment

This study compared physiological responses and cognitive performance during simulated work activities in heat to a thermoneutral condition. First responders perform physically demanding activities in a hot environment which may impose additional burdens on tactical personnel during daily tasks. Ten healthy (8 men and 2 women) participants performed two consecutive simulated work activities with two repetitions of each activity (10 min walking on treadmill and 15 sandbag lifts) under heat and thermoneutral conditions. A Stroop color word test (SCWT) and total mood disturbance (TMD) were obtained at first and second baseline (B1, B2), after a 30-min resting period (B3), and recovery (R1). At the end of the trial, core temperature (Tc), skin temperature (tsk), and mean body temperature (Tb) were higher in the heat condition compared to neutral condition (all p ≤ 0.05), whereas oxygen uptake, heart rate, and mean arterial pressure were not significantly different between conditions. There were no differences in scores of SCWT and TMD between conditions. However, TMD was significantly improved after two successive bouts of exercise compared to B3 (all p ≤ 0.05). This investigation shows that two successive simulated work activities did not induce the detrimental influence on thermoregulatory and cognitive responses. Extended work activities in a hot and humid environment may impose a psychophysiological burden and need to be investigated.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:17

Enthalten in:

International journal of environmental research and public health - 17(2020), 10 vom: 15. Mai

Sprache:

Englisch

Beteiligte Personen:

Gerhart, Hayden D [VerfasserIn]
Fiorentini, Amy B [VerfasserIn]
Storti, Kristi L [VerfasserIn]
Alman, Robert [VerfasserIn]
Bayles, Madeline P [VerfasserIn]
Pesci, Louis [VerfasserIn]
Seo, Yongsuk [VerfasserIn]

Links:

Volltext

Themen:

Heat stress
Journal Article
Research Support, Non-U.S. Gov't
Selective attention
Simulated activities
Total mood disturbance

Anmerkungen:

Date Completed 05.10.2020

Date Revised 05.10.2020

published: Electronic

Citation Status MEDLINE

doi:

10.3390/ijerph17103443

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM310114985