Simulation of Consecutive Day Shift Work

The purpose of this study is to determine differences in physiological recovery between two consecutive days of simulated fire suppression work. The secondary purpose is to determine differences in heat gain and heat loss between two consecutive days of simulated fire suppression work. Subjects will complete two consecutive days of simulated structural firefighting shift work, 24 hours apart. Before and after each laboratory visit, subjects will continuously wear a Holter monitor and ambulatory blood pressure monitor to quantify parasympathetic tone and recovery from work.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Hyperthermia Body Temperature Changes Fatigue; Heat Heat Stress Disorders Pathological Conditions, Signs and Symptoms Signs and Symptoms Wounds and Injuries

Age range

18 year–39 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Center for Research and Exercise in Special Environments

Buffalo, New York, 14214, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

18-39 y old men and women
Self-reported to be healthy

Exclusion criteria

History of any cardiovascular, neurologic, renal, or metabolic disease
Current tobacco use or regular use within the last 2 years
Taking medications with known thermoregulatory or cardiovascular effects (e.g., aspirin, acetaminophen, ibuprofen, beta blockers, diuretics, psychotropics, etc.)
History of exertional heat stroke
Currently pregnant or breastfeeding, or planning to become pregnant during the study
Inability to follow the rules of the protocols or understand the consent form
No contraindications for ingestion of the gastrointestinal temperature pill

Treatment and study plan

2 days of work heat stress

Other

2 consecutive days of identical simulated structural firefighting tasks.

Primary outcomes

Core temperature

Time frame: 20 minutes

Gastrointestinal temperature measured with an ingestable pill.
Heart rate

Time frame: 20 minutes

Heart rate measured with a wearable heart rate strap and monitor

Sponsors and collaborators

Lead sponsor

State University of New York at Buffalo

Other

Registry information

Important dates

Study start: 2019
Primary completion: 2022
Study completion: 2022
First posted: Nov 12, 2020
Registry last updated: Jul 26, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Not Yet Recruiting