Menthol gel may keep runners cool – no ice needed
NCT ID NCT07482046
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested whether a gel containing 4% menthol, applied to the neck, arms, and legs, helps recreational runners feel cooler and perform better in hot conditions. Thirty-seven healthy adults aged 18 to 45 completed two runs, once with the menthol gel and once with a placebo. Researchers measured thermal sensation, body temperature, heart rate, and perceived exertion to see if the menthol gel made a difference.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Menthol 4% gel
- What this could lead to
- If it works, this could offer a simple, drug-free way to help runners feel cooler and perform better in hot conditions.
- What could go wrong
- This is a small, completed trial with only 37 participants. The effect may be limited to feeling cooler rather than actually lowering body temperature, and results may not apply to all athletes.
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
-
Phase 2/3
Runs two stages together: whether the treatment works, then large-scale confirmation.
- Participants
-
37 people
The number who actually took part.
- Started
-
May 2023
- Finished
-
Dec 2023
- Lead sponsor
-
A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 45 years
- Sex
-
Anyone
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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: * Adults, 18 - 45 years old * Have a personal best 10-kilometer run time of under one hour (which will be confirmed during the screening of prospective Subjects through history taking) in the last 6 months. * Doing running training at least 3 times/week for the past 1 year * Have a level of heart-lung endurance or VO2max that is at least included in the average criteria (known through examination: Bleep test) * Meets Subject screening criteria by answering "No" to all questions on the Physical Activity Readiness Questionnaire (PAR-Q) questionnaire. * Have normal resting ECG and normal GDS results on screening of prospective Subjects. * At the time of the study, the body temperature was within the normal range Exclusion Criteria: * Pregnant and/or breastfeeding women * Have had a musculoskeletal injury in the last three months and still have symptoms or complaints * Are experiencing acute infectious disorders, such as gastrointestinal, respiratory infections * During treatment for chronic diseases (e.g. high blood pressure or hypertension, diabetes or diabetes mellitus, heart disease) * Have a history of hypersensitivity or allergy to menthol or skin-applied products (especially gel-based products) * Has a history of cold allergy * Have a positive COVID-19 test result at the time of screening.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Eminence Elite Clinic - Elite Club
Jakarta, DKI Jakarta, 12940, Indonesia
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