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Timing your workout: morning or evening for better blood sugar?

NCT ID NCT06292000

Knowledge-focused Sponsor: University of Colorado, Denver 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
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 aimed to see if exercising in the morning versus the evening changes how the body handles sugar in adults with prediabetes. Participants would have completed short bouts of morning exercise, evening exercise, and no exercise, with their blood sugar and insulin levels measured closely. The study was withdrawn before enrolling anyone, so no results are available.

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.

Started

Feb 2024

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.

Ages

20 to 40 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: * Age 20-40 years. * Biologically female participants with regular menstruation * Body mass index (BMI) ≥ 30.0 to ≤ 40.0 kg/m2 * Prediabetes as defined by the American Diabetes Association (HgbA1c ≥ 5.7% to \< 6.5% or fasting glucose ≥ 100 to \< 126 mg/dL) * Physically inactive (\< 100 min/wk of regular exercise) * No contraindications to exercise or limitations on ability to be physically active * Weight stable (weight change \< 5kg in past 3 months) * Not currently pregnant or lactating, not pregnant within the past 6 months or planning to become pregnant in the next 6 months. Exclusion Criteria: * History or symptoms suggestive of cardiovascular disease or congestive heart failure * Diastolic blood pressure \> 100 mmHg, systolic blood pressure \> 160 mmHg, or resting heart rate \> 100 bpm * History of type 1 or type 2 DM (or fasting glucose ≥126 mg/dL or Hemoglobin A1C ≥6.5% on screening labs) * Current use of medications that effect SI (oral steroids, metformin, GLP1 receptor agonists, etc). * Chronic kidney disease (CKD, stage 4 or higher) * TSH, electrolytes, hematocrit, white blood cell count, or platelets significantly outside the normal reference range on screening labs * Triglycerides \> 400 or LDL \> 200 on screening labs * Clinically significant abnormality on resting ECG, presence, or history of any other metabolic or chronic health problems which would affect appetite, food intake, energy metabolism, or ability to participate in exercise, * History of obstructive sleep apnea, primary insomnia, night-time shiftwork, rotating work, or other atypical sleep patterns. * Current or recent (within 1 month) zero or very low carbohydrate diet (\< 10% daily calories from carbohydrates).

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Conditions

The condition(s) this trial relates to.

Insulin Resistance Motor Activity Obesity obesity disorder prediabetes syndrome type 2 diabetes mellitus

As listed by the trial registrant

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

Inactivity/low levels of exercise Obesity Prediabetes

Contacts and locations

Locations

  • University of Colorado

    Aurora, Colorado, 80045, United States

More trials for these conditions

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