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Time-Restricted eating and HIIT show promise for metabolic syndrome

NCT ID NCT06501001

Disease control Sponsor: University of Castilla-La Mancha 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether eating only during a 10-hour window each day and doing high-intensity interval training three times a week can improve health in people with metabolic syndrome. Two hundred adults took part for 16 weeks. Researchers measured changes in metabolic syndrome score, body composition, and fitness.

What this could mean

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

Active substance
Time-restricted eating (eating only within a 10-hour window) and high-intensity interval training (supervised exercise sessions three times a week)
What this could lead to
If it works, this could point toward a practical lifestyle program to help manage metabolic syndrome without medication.
What could go wrong
This is a completed study, but it is relatively small (200 people) and the results may not apply to everyone. Lifestyle changes can be hard to stick with long-term.

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

200 people

The number who actually took part.

Started

Sep 2024

Finished

Apr 2026

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

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: Metabolic syndrome patients diagnosed according to The International diabetes federation consensus of 2009 (Alberti, et al., Circulation): * Waist circumference ≥ 92 cm (Men) or ≥ 80 cm (Women). * Triglycerides ≥ 150 mg/dL (or on drug treatment for elevated triglycerides). * Reduced HDL-C \< 40 mg/dL (Men), \< 50 mg/dL (Women) (or on drug treatment for reduced HDL-C). * Elevated blood pressure, systolic blood pressure ≥ 130 mmHg and/or diastolic blood pressure ≥ 85 mmHg (or treatment with an antihypertensive drug with a history of hypertension). * Elevated fasting glucose ≥ 100 mg/dL (or drug treatment of elevated blood glucose). * Age ≥18 to ≤65 years * Previously inactive (\<150 min·wk-1 of the moderate-intensity activity assessed by 7-d IPAQ Exclusion Criteria: * Pregnancy, and lactation within 24 weeks of study commencement * Untreated cardiovascular or renal disease * Type 1 diabetes * Any condition associated with exercise intolerance. * Habitual eating window \< 12 hours * Performing high-intensity training more than once a week * Body mass variations \> 4 kg three months prior to study commencement * Shift work that includes night shifts

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Conditions

The condition(s) this trial relates to.

abdominal obesity-metabolic syndrome Intermittent Fasting metabolic syndrome X Motor Activity Obesity obesity disorder Weight Loss

As listed by the trial registrant

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

Cardiometabolic syndrome Exercise Metabolic syndrome Obesity Time-restricted eating Weight loss

Contacts and locations

Locations

  • University of Castilla La Mancha

    Toledo, 45071, Spain

More trials for these conditions

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