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Do muscle gels really work? small study checks skin changes

NCT ID NCT03016221

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study looked at how over-the-counter warming and cooling gels change skin temperature, blood flow, and how they feel on the skin. Twenty-one healthy adults had gels applied to their back and arms. The goal was to understand the physical effects of these products, not to test if they relieve pain.

What this could mean

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

Active substance
topical gels with warming or cooling effects (containing menthol, essential oils, and other ingredients)

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

21 people

The number who actually took part.

Started

May 2017

Finished

Dec 2019

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 40 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: * no existing musculoskeletal disorders in the region of interest * no surgery in the region of interest in the last year * healthy skin conditions in the region of interest Exclusion Criteria: * fear of treatment * regular intake of drugs, excluding contraceptives * metal implants in the region between C7 and sacrum, including hip joints * lack of epicritic and protopathic skin sensitivity * renal insufficiency * bronchial asthma * pregnancy/lactation * type 1 or 2 diabetes mellitus * polyneuropathy

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Conditions

The condition(s) this trial relates to.

Erythema Hyperemia

As listed by the trial registrant

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

Contacts and locations

Locations

  • SUPSI

    Landquart, Kanton Graubünden, CH-7302, Switzerland

More trials for these conditions

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