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Race day blood sugar spike: study probes stress effect on athletes with type 1 diabetes

NCT ID NCT05561517

Knowledge-focused Sponsor: University of Aarhus Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 29, 2026 · Last updated Jun 30, 2026 · Updated 1 time

Summary

This study investigates why athletes with type 1 diabetes often experience higher blood sugar during competitions compared to regular training. Researchers will monitor 12 athletes with type 1 diabetes and 12 healthy athletes during a 5K race and a 5K training session, measuring blood sugar, stress hormones, and heart rate. The goal is to understand how competition stress affects glucose levels, which could help athletes better manage their diabetes.

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 stress-induced hyperglycemia is better understood, it could help athletes with type 1 diabetes manage their blood sugar more effectively during competitions.
What could go wrong
This is a small observational study with only 24 participants, so findings may not apply to all athletes with type 1 diabetes. The results are exploratory and not a treatment.

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

24 people

The number who actually took part.

Started

May 2023

Finished

Sep 2024

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: * T1D and healthy athletes who are otherwise healthy * Age between 18 and 65 years * HbA1c less than 70 mmol/mol * The athletes must be engaged in competitive sports that includes running, and agree to participate in a local 5 km running competition within 3 months Exclusion Criteria: * Proliferative retinopathy * Hypoglycemia unawareness * Heart disease and other conditions which may be negatively affected by the VO2 max test and study days

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Conditions

The condition(s) this trial relates to.

hyperglycemia type 1 diabetes mellitus

As listed by the trial registrant

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

Hyperglycemia stress Type 1 diabetes

Contacts and locations

Locations

  • Steno Diabetes Center Aarhus

    Aarhus, Region Midt, 8200, Denmark

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