Women Runners' hearts under the microscope in Ultra-Marathon study
NCT ID NCT07372859
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study will follow 120 female runners during ultra-endurance races (69-80 km) to see how their hearts and inflammation levels change. Researchers will use ultrasound scans before, during, and after the race, and link those changes to hormone levels like estrogen and testosterone. The goal is to better understand women's unique heart responses to extreme exercise.
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 improve understanding of how extreme exercise affects women's hearts and inflammation, guiding future training and health advice.
- What could go wrong
- This is an observational study with no treatment, so it won't directly change medical practice. Results may not apply to all women or less extreme exercise.
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 120 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Mar 2026
An estimate. Start dates often move.
- Expected to finish
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Sep 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 years and older
- Sex
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Female 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: * Must have a Global Positioning System watch during the race; * Must participate in one of the following races: * "Ecotrail de Paris Ile France©" (=a trail running race in the Paris region, it is not possible to translate; it is a registered trademark) 80 kilometers; * Or "la 6000D©" 69 kilometers; * Must comply with the race regulations: * Medical certificate stating no contraindications to competitive running, dated less than 12 months prior to the race; * Or a valid sports license on the day of the race. * Must agree to participate in the study, sign the consent form, and allow the sponsor to use their data for the purposes of this study. Exclusion Criteria: * Refusal or linguistic or mental incapacity to sign the informed consent form; * Person under guardianship (conservatorship, curators, or legal protection) or deprived of liberty; * Person not affiliated with a social security scheme; * Pregnant woman; * Person participating in a drug study; * Women with a medical history (chronic lung disease, heart disease, pharmacologically treated hypertension) or with a known significant chronic inflammatory disease at the time of the enrollment visit; * Person who has already participated in this study in a previous race.
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Genom att skicka in godkänner du våra Användarvillkor
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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Hôpital Henri Mondor, APHP
Créteil, France
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