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Related Experiment Video

Updated: Nov 16, 2025

Integrated Compensatory Responses in a Human Model of Hemorrhage

Integrated Compensatory Responses in a Human Model of Hemorrhage

Published on: November 20, 2016

Firefighter hemodynamic responses to different fire training environments.

Elizabeth C Lefferts¹, Alexander J Rosenberg¹, Georgios Grigoriadis¹

¹Department of Kinesiology & Nutrition, University of Illinois at Chicago, Chicago, IL, USA.

Vascular Medicine (London, England)

|February 19, 2021

Summary

This summary is machine-generated.

Firefighter training involving oriented strand board (OSB) increases cardiovascular strain more than other scenarios. This highlights the need to consider thermal and environmental stressors in training to mitigate cardiovascular risk.

Keywords:

arterial stiffness blood pressure firefighter safety occupational vascular disorders pulse wave velocity

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Area of Science:

Occupational Health
Cardiovascular Physiology
Environmental Health

Background:

Firefighting poses significant cardiovascular (CV) strain due to physical exertion, thermal stress, and smoke pollutants.
Understanding hemodynamic responses to varying training conditions is crucial for assessing firefighter CV risk.

Purpose of the Study:

To investigate the hemodynamic responses of firefighters exposed to different training environments: pallets/straw, oriented strand board (OSB), and simulated fire/smoke (fog).

Main Methods:

Twenty-three firefighters underwent measurements of brachial blood pressure and estimated central blood pressure and hemodynamics.
Measurements were taken at baseline, immediately post-scenario, and 30 minutes post-scenario for each training environment.

Main Results:

While training environment did not significantly alter hemodynamic response over time, OSB scenarios led to higher pulse wave velocity and blood pressure compared to other conditions.

Conclusions:

Oriented strand board (OSB) training scenarios impose a greater arterial burden on firefighters.
The combination of thermal burden, strenuous exercise, and psychological/environmental stress in training requires careful consideration for CV risk assessment.