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Can a simple fan and water spray beat the heat? a study investigates

NCT ID NCT06593067

Knowledge-focused Sponsor: University of Texas Southwestern Medical Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 14, 2026 · Last updated Aug 14, 2026

Summary

This study tests how different cooling methods—an electric fan, water spray, both, or neither—affect skin temperature during a short bout of heat exposure. Healthy adults will sit in a heated room (41°C, 15% humidity) for 15 minutes while small sensors measure temperature on the skin surface and just beneath it. The goal is to see which cooling approach best lowers skin temperature, which could help guide ways to stay safe in hot environments.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Cooling modalities: electric fan, water spray, or both, compared with no cooling during heat exposure
What this could lead to
If effective, this could inform better cooling strategies to prevent heat-related illness during heatwaves.
What could go wrong
This is a small, early-stage study measuring skin temperature only, not overall body cooling or health outcomes. Results may not apply to real-world heat stress conditions.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

27 people

The number who actually took part.

Started

Oct 2024

Finished

Nov 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Free of any significant underlying medical problems based upon a detailed medical history and physical exam. * Normal resting electrocardiogram. Exclusion Criteria: * Known heart disease; other chronic medical conditions requiring regular medical therapy including cancer, diabetes, neurological diseases, and uncontrolled hypertension, etc.; as well as serious abnormalities detected on routine screening. * Individuals who are pregnant, planning to become pregnant, or breastfeeding. * Taking prescribed medications (such as beta blockers and non-dihydropyridine calcium channel blockers) or over-the-counter medications that have known influences on thermoregulatory response. * Current smokers, as well as individuals who regularly smoked within the past 3 years.

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Conditions

The condition(s) this trial relates to.

Hyperthermia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Hyperthermia

Contacts and locations

Locations

  • Institute for Exercise and Environmental Medicine

    Dallas, Texas, 75231, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.