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Can short, intense workouts beat the time barrier to weight loss?

NCT ID NCT07811596

Disease control Sponsor: Istanbul Medipol University Hospital 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 10, 2026 · Last updated Sep 11, 2026 · Updated 1 time

Summary

Researchers are testing whether high-intensity interval training (HIIT) helps overweight and obese adults improve physical activity, waist-to-hip ratio, sleep quality, self-esteem, stress, and motivation. The trial compares two ways of doing HIIT: online sessions supervised by a physiotherapist and unsupervised home-based workouts. Forty adults aged 18 to 65 with a body mass index between 25 and 39.9 join the study, and no restrictive diet is required. The goal is to see which approach is more feasible and effective for fitting exercise into daily life.

What this could mean

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

Active substance
High-Intensity Interval Training (HIIT), a time-efficient exercise method alternating short bursts of hard effort with recovery periods
What this could lead to
If supervised online HIIT works better than home-based HIIT, it could give people with limited time a practical way to exercise and manage weight without a strict diet.
What could go wrong
This is a small study of 40 people, so results may not apply broadly. HIIT is intense, and unsupervised home sessions carry a risk of injury or poor technique, especially for people with heart or joint problems.

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

About 40 people

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

Started

Mar 2026

Expected to finish

Oct 2026

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.

Ages

18 to 65 years

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: * Age between 18 and 65 years * Body Mass Index (BMI) between 25 and 39.9 kg/m² * Ability to use a mobile application for online exercise training * Literacy Exclusion Criteria: * Individuals currently participating in any exercise and/or dietary program * Individuals diagnosed with a health condition that prevents them from exercising * Individuals with any systemic or orthopedic condition that contraindicates high-intensity exercise * Pregnancy * Individuals with cardiovascular disease

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder Overweight

As listed by the trial registrant

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

Overweight and obese adults

Contacts and locations

Locations

  • İstanbul Medipol University

    Istanbul, Istanbul, Turkey (Türkiye)

More trials for these conditions

Other studies related to the condition(s) this trial covers.