Iceman's breathing trick tested on Vapers' lungs
NCT ID NCT07153640
First seen Jun 24, 2026 · Last updated Jun 26, 2026 · Updated 1 time
Summary
This study tests whether a special breathing technique called Wim Hof breathing can improve lung function in young men who smoke e-cigarettes. Forty-two participants will practice deep breathing and breath-holding exercises. Researchers will measure lung capacity, oxygen levels, and walking ability to see if the technique helps.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Wim Hof breathing exercise
- What this could lead to
- If it works, this could point toward a simple breathing technique to help smokers improve their lung function.
- What could go wrong
- This is a very small, early study with only 42 participants. The results may not apply to all smokers, and the breathing exercise may not produce meaningful improvements.
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
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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
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About 42 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2025
An estimate. Start dates often move.
- Expected to finish
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May 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 29 years
- Sex
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Male participants only
- Healthy volunteers
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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: * • The age of the subjects ranged from 18-29 years old. * The males are participated. * Any subjects smoking electronic cigarettes (vaping). * Subjects with body mass index between 18.5 - 29.9 Kg/m2. * Penn State Electronic Cigarette Dependence Index (moderate and high dependent) (Appendix 1) (Maraqa et al., 2024). Exclusion Criteria: * • History of syncope (fainting). * High blood pressure (\>140/100 mm Hg) (Shandu et al., 2023a). * Any type of heart disease. * Seizures or Epilepsy. * Recent surgery. * Metabolic disorders. * Subjects with body mass index more than 35 Kg/m2.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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6 October
Giza, Egypt