Heat Stress for Healthy Subjects
What You Need to Know Before You Apply
What is the purpose of this trial?
This trial examines how individuals perform simple and combined tasks before and after exposure to heat that raises body temperature to 39°C (about 102°F). The goal is to understand heat's effects on cognitive and motor abilities. Participants will undergo a heat stress test, which involves controlled exposure to high temperatures, to assess its impact on performance. The trial seeks healthy individuals who can safely swallow a temperature pill and have not recently experienced certain injuries or conditions. As an unphased trial, it offers participants the chance to contribute to scientific understanding of how heat affects human performance.
Do I need to stop my current medications for this trial?
The trial information does not specify whether you need to stop taking your current medications.
What prior data suggests that this heat stress protocol is safe for healthy subjects?
Research has shown that heat stress affects the body in several ways. It ranks as a leading cause of weather-related deaths and can worsen existing health issues like heart disease and diabetes. Studies indicate that extreme heat might lead to heart problems, such as high blood pressure or irregular heartbeats. People working in hot conditions often feel weaker and have trouble thinking clearly, increasing the risk of accidents. Older adults exposed to heat stress may face higher risks of hospitalization or even death. Despite these serious effects, this trial will occur in a controlled environment to ensure participant safety.12345
Why are researchers excited about this trial?
Heat stress is unique because it explores how controlled exposure to high temperatures can impact healthy individuals, which is not a conventional approach in medical treatments. Unlike typical treatments that involve medications or surgeries, heat stress is a non-invasive technique that may influence body functions by temporarily raising body temperature. Researchers are excited about this trial because it could uncover new insights about the human body's resilience and adaptability, potentially offering novel ways to enhance physical health and performance.
What evidence suggests that heat stress is effective for studying cognitive and motor responses?
Research has shown that heat stress can greatly affect health. Exposure to extreme heat can increase heart rate and strain the heart, impacting heart health. Studies also indicate that higher temperatures can hinder learning and sleep, affecting overall well-being and productivity. Although heat stress is typically harmful, this trial will expose participants to controlled heat stress to study its effects on thinking and movement tasks. The researchers aim to better understand how people react to quick temperature changes and to determine if controlled heat stress can provide insights into human performance and adaptation.15678
Who Is on the Research Team?
Erin McCallister
Principal Investigator
Louisiana State University Health Sciences Center Shreveport
Are You a Good Fit for This Trial?
This trial is for healthy individuals. People with any health conditions or risk factors that could make heat exposure unsafe are not eligible.Inclusion Criteria
Exclusion Criteria
Timeline for a Trial Participant
Screening
Participants are screened for eligibility to participate in the trial
Baseline Assessment
Participants perform single and dual tasks at normal temperature, including cognitive and motor tasks such as recall, serial subtraction, gait, and balance.
Heat Stress and Task Performance
Participants undergo heat stress by wearing firefighter gear and walking on a treadmill in a hot, humid environment until their core temperature reaches 39C, followed by repeating the single and dual tasks.
Follow-up
Participants are monitored for any adverse effects and overall safety after the heat stress and task performance.
What Are the Treatments Tested in This Trial?
Interventions
- Heat Stress
Trial Overview
The study tests how performing mental and physical tasks changes before and after being exposed to rapid heat stress, which raises body temperature to about 39°C.
How Is the Trial Designed?
1
Treatment groups
Experimental Treatment
Participants will receive the heat stress stimulus
Find a Clinic Near You
Who Is Running the Clinical Trial?
Louisiana State University Health Sciences Center Shreveport
Lead Sponsor
Citations
Heat and health
Heat stress is a leading cause of weather-related deaths and can exacerbate underlying illnesses including cardiovascular disease, diabetes, ...
A Systematic Review of Heat Health Warning Systems - PMC
The study found that a maximum heat index of 95–100 °F or higher was linked to increased mortality over the following three days [50]. In San ...
Community-based heat adaptation interventions for ...
Research has shown a substantial association between elevated temperatures and adverse health outcomes, with a 1°C temperature increase correlating with an 18% ...
4.
datasmart.hks.harvard.edu
datasmart.hks.harvard.edu/essential-health-outcomes-and-data-points-informing-extreme-heat-workEssential Health Outcomes and Data Points for Informing ...
Extreme heat has also been found to negatively impact learning and sleep, with significant consequences for community health and productivity.
Heat exposure and cardiovascular health outcomes
This study reviews the current epidemiological evidence linking heat exposures (both high temperatures and heatwaves) with cardiovascular disease outcomes
Heat Stress and Workers
Workers exposed to extreme heat or work in hot environments may be at risk of illnesses and injuries.
Occupational heat stress, heat-related effects and the ... - PMC
Individuals working in the heat are also prone to physical strength losses and cognitive function impairments, leading to work-related injuries (3), missed ...
Impact of heat stress on cardiovascular health outcomes ...
This review reveals that heat stress in older adults may lead to increased hospitalization and death in some cases.
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