Can extreme running stress the heart? a study investigates
NCT ID NCT07753694
First seen Aug 07, 2026 · Last updated Aug 07, 2026
Summary
This study looks at how running an ultra-trail race (80 or 160 km) affects the heart's function in adult amateur runners. Researchers will use echocardiography and blood tests before, during, and after the race to see if there are temporary changes in heart function and biomarkers. The goal is to understand how the heart adapts to extreme endurance exercise and whether recovery happens within a week.
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 study could reveal how extreme endurance exercise affects the heart, potentially guiding future monitoring strategies for athletes.
- What could go wrong
- This is an observational study, so it cannot prove cause and effect. Results may not apply to all runners, and the small sample size limits generalizability.
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.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2027
An estimate. Start dates often move.
- Expected to finish
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May 2027
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.
Who is studied
Adult ultra-endurance runners participating in the "Trail des Échos" ultra-trail race (80 km or 160 km), screened prior to participation and recruited to investigate physiological cardiovascular adaptations to prolonged endurance exercise in individuals without known cardiovascular disease.
- Ages
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18 years and older
- Sex
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Anyone
- 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: * Adults aged ≥18 years * Registered participants in the "Trail des Échos" ultra-trail race (80 km or 160 km) * Valid health clearance according to French Athletics Federation requirements * Affiliation with a national health insurance system * Able to understand study procedures and provide written informed consent Exclusion Criteria: * Known or suspected cardiovascular disease at screening, including coronary artery disease, heart failure, clinically significant arrhythmias, moderate-to-severe valvular disease, uncontrolled hypertension, or prior stroke * Acute infection or unstable chronic medical condition (e.g., uncontrolled diabetes, renal, hepatic, respiratory, thyroid, or inflammatory disease) * Current treatments that may interfere with cardiovascular or biological assessments (including renin-angiotensin-aldosterone system blockers, chronic diuretics, anticoagulants, or systemic corticosteroids) * Use of systemic non-steroidal anti-inflammatory drugs within 3 days before the race or planned during the event * Participation in another ultra-endurance race (≥80 km) within 7 days before or after the study race * Pregnancy or breastfeeding * Inability to provide informed consent or legal protection status * Participation in another interventional clinical study
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Genom att skicka in godkänner du våra Användarvillkor
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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Centre Hospitalier Régional Universitaire de Nancy
Vandœuvre-lès-Nancy, Meurthe-et-Moselle, 54511, France
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