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Scientists test how day vs. night heat changes your health

NCT ID NCT07501923

Knowledge-focused Sponsor: Jian Cheng Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at how being in hot conditions during the day, at night, or both affects the body and mind. Thirty-five healthy adults aged 18-30 will spend time in a temperature-controlled room. Researchers will measure heart function, lung capacity, blood markers of inflammation and stress, and mood changes. The goal is to understand the short-term health impacts of different heat exposure patterns.

What this could mean

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

What this could lead to
If successful, this could help understand how different patterns of heat exposure impact health, potentially guiding public health advice during heatwaves.
What could go wrong
This is a small, early-stage study in healthy young adults only, so results may not apply to older or vulnerable populations. It measures short-term effects, not long-term health outcomes.

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

About 35 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2025

Expected to finish

Dec 2026

An estimate. End dates often move.

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 30 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: * Age 18-30; * In good health, with no history of cardiovascular disease, respiratory disease, diabetes, endocrine disorders, neurological or psychiatric conditions; * No smoking or alcohol addiction, no history of substance abuse; * No prior history of particular sensitivity to high-temperature environments. Exclusion Criteria: * Individuals who have experienced fever, colds, infectious diseases, or significant physical trauma within two weeks prior to the high-temperature test; * Individuals currently using medications that may affect psychological, cognitive, cardiovascular, or respiratory functions; * Pregnant women and lactating females; * Participants shall not be scheduled to participate during menstruation; * Individuals with a history of fainting or severe discomfort caused by high temperatures.

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Conditions

The condition(s) this trial relates to.

cardiovascular disorder metabolic disease respiratory system disorder

As listed by the trial registrant

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

Cardiovascular system Metabolism changes Psychology functional behavior Respiratory system

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Anhui Medical University

    RECRUITING

    Hefei, Anhui, 230032, China

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