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Can extreme running stress the heart? a study investigates

NCT ID NCT07753694

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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 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

About 60 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

May 2027

An estimate. Start dates often move.

Expected to finish

May 2027

An estimate. End dates often move.

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.

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

18 years and older

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: * 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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Conditions

The condition(s) this trial relates to.

Motor Activity

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.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Centre Hospitalier Régional Universitaire de Nancy

    Vandœuvre-lès-Nancy, Meurthe-et-Moselle, 54511, France

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