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Could eccentric cycling be a smarter workout for obese teens?

NCT ID NCT02925572

Disease control Sponsor: University Hospital, Clermont-Ferrand Source: ClinicalTrials.gov ↗

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 07, 2026 · Last updated Aug 07, 2026

Summary

This trial tests whether a 12-week program of eccentric cycling—where muscles lengthen under load, like pedaling against resistance—can reduce body fat in overweight and obese teenagers more effectively than traditional concentric cycling. The study compares both types of exercise at the same oxygen consumption level to see if the higher mechanical load of eccentric work leads to greater fat loss and improvements in metabolic health. Participants are teens aged 12 to 17 with a BMI above the 90th percentile, and the trial measures changes in total body fat, fitness, strength, and blood markers.

What this could mean

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

Active substance
Eccentric cycling exercise program
What this could lead to
If eccentric cycling proves more effective, it could offer a more efficient exercise strategy to reduce fat mass in obese teenagers, potentially improving metabolic health.
What could go wrong
This is a small early-stage trial, so results may not be conclusive or widely applicable. Eccentric exercise can cause muscle soreness, and adherence may vary.

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

25 people

The number who actually took part.

Started

Jan 2017

Finished

Jan 2020

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

12 to 17 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Adolescent (12 to 17 years old) * BMI\>90th percentile * Post puberty (Tanner 3 to 5) * Inactive (\<10 METS/h/week) * No other chronic disease (cardio pulmonary, osteo articulary or muscular diseases), no surgery during the last 3 months, no genetic obesity and no contraindication to physical activity Exclusion Criteria: \-

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder Pediatric Obesity

As listed by the trial registrant

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

Adolescents (12 to 17 years old) Obese (bmi>90TH percentile)

Contacts and locations

Locations

  • CHU Clermont-Ferrand

    Clermont-Ferrand, 63003, France