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Deuterium-labelled glucose reveals how athletes burn fuel at different intensities

NCT ID NCT07646665

Knowledge-focused Sponsor: University of Bath 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 09, 2026 · Updated 2 times

Summary

This study uses a special type of glucose labelled with deuterium (a safe, non-radioactive tracer) to track exactly how much sugar from a drink the body burns during cycling. Six endurance-trained adults will exercise at both moderate and high intensity while researchers measure the rate of carbohydrate oxidation. The goal is to understand how exercise intensity affects the body's ability to use fuel from an external source.

What this could mean

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

Active substance
deuterium-labelled glucose
What this could lead to
If successful, this could help athletes and coaches fine-tune fueling strategies for different exercise intensities.
What could go wrong
This is a very small, early-stage metabolic study with only 6 participants, so results may not apply to all athletes or exercise conditions.

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

About 6 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2026

Expected to finish

Sep 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

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: * Endurance trained * Aged 18 to 65 years Exclusion Criteria: * Contraindications to exercise * Unable to complete 2 hours of continuous cycling

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As listed by the trial registrant

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

Exercise metabolism

Contacts and locations

Locations

  • University of Bath

    Bath, BA2 7AY, United Kingdom

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