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Just 3 days of sitting more may harm older adults' blood vessels and blood sugar

NCT ID NCT04812392

Knowledge-focused Sponsor: Leryn Reynolds 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at what happens when active older adults (55+) reduce their physical activity for just 3 days. Researchers measured changes in blood sugar after meals and blood vessel function, comparing them to younger adults. The goal was to see how quickly inactivity can affect health in aging bodies.

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 this study provides clear results, it could help explain how quickly inactivity harms blood vessel function and blood sugar control in older adults, guiding future prevention strategies.
What could go wrong
This is a small, completed observational study with only 20 participants. It does not test a treatment, so it cannot directly lead to a therapy. Results may not apply to less active or less healthy individuals.

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

20 people

The number who actually took part.

Started

Apr 2021

Finished

Jan 2022

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 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: 1. 55 years and older, 18-40 years old 2. Healthy, physically active, performing at least 90 min/week of physical activity 3. Free of physical limitations that may interfere with alterations in daily physical activity levels Exclusion Criteria: 1. Physician diagnosed metabolic disease, HIV, hepatitis, or tuberculosis. 2. Body weight change of greater than 5% within the previous 2 months 3. Smoking within the previous 2 months. 4. Taking medications that alter blood glucose levels

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Conditions

The condition(s) this trial relates to.

cardiovascular disorder diabetes mellitus glucose intolerance Sedentary Behavior

As listed by the trial registrant

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

Aging Cardiovascular diseases Glucose intolerance

Contacts and locations

Locations

  • Old Dominion University

    Norfolk, Virginia, 23508, United States

More trials for these conditions

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