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Related Experiment Video

Updated: Jun 7, 2026

A Preclinical Model of Exertional Heat Stroke in Mice

A Preclinical Model of Exertional Heat Stroke in Mice

Published on: July 1, 2021

Physiological strain and countermeasures with firefighting.

S S Cheung¹, S R Petersen, T M McLellan

¹Department of Physical Education & Kinesiology, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario, Canada. stephen.cheung@brocku.ca

Scandinavian Journal of Medicine & Science in Sports

|October 30, 2010

Summary

This summary is machine-generated.

Firefighter protective clothing causes heat stress by limiting cooling, increasing physiological strain and reducing work capacity. New materials and targeted cooling strategies are needed to mitigate these risks during firefighting operations.

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Area of Science:

Occupational Health
Environmental Physiology
Protective Equipment Design

Background:

Firefighter protective clothing is essential but increases physiological strain.
Key issues include impaired heat dissipation and increased respiratory work.
This leads to uncompensable heat stress (UHS) and potential cardiac events.

Purpose of the Study:

To analyze the physiological strain imposed by firefighter protective clothing.
To identify factors contributing to uncompensable heat stress in firefighters.
To discuss the limitations of current countermeasures and suggest future directions.

Main Methods:

Review of physiological responses to heat stress in protective ensembles.
Analysis of factors influencing tolerance time during uncompensable heat stress.
Examination of current countermeasures and their effectiveness.

Main Results:

Protective clothing impedes evaporative heat loss, elevating core temperature.
Increased respiratory work and weight from breathing apparatus exacerbate heat strain.
Tolerance time is determined by initial core temperature, critical tolerance temperature, and rate of temperature increase.

Conclusions:

Advances in materials science are needed for lighter, less restrictive protective equipment.
Targeted or exercise-implementable cooling strategies are required.
Integrating countermeasures with task requirements is crucial for firefighter safety and performance.