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Body clock study reveals hidden heart risks in obesity

NCT ID NCT03388788

Knowledge-focused Sponsor: Oregon Health and Science University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how the body's internal clock (circadian rhythm) affects heart disease risk, especially in people with obesity. Researchers measured blood pressure and other heart markers in 17 lean and overweight adults over 5 days. The goal is to understand if obesity creates unique heart risks at different times of day. Because of low enrollment, results are limited but will help design future studies.

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

17 people

The number who actually took part.

Started

May 2018

Expected to finish

Jun 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.

Who is studied

Community sample

Ages

25 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: * Ages 25-65 * Lean and overweight (BMI 18.5-40kg/m2) * Habitually sedentary Exclusion Criteria: * History of smoking/tobacco use * Insomnia * Moderate to severe obstructive sleep apnea. * Prior shift work within 6 months prior to the study. * Prescription medications * Drugs of abuse * Acute, chronic, or debilitating medical condition (including diabetes, hypertension, and metabolic syndrome)

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Conditions

The condition(s) this trial relates to.

Chronobiology Disorders circadian rhythm sleep disorder Obesity obesity disorder

As listed by the trial registrant

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

Cardiovascular risk factor Circadian dysregulation Obesity

Contacts and locations

Locations

  • Oregon Health & Science University

    Portland, Oregon, 97239, United States

More trials for these conditions

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