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What should PKU patients eat before exercise? new study aims to find out

NCT ID NCT07526909

Knowledge-focused Sponsor: Hacettepe 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Sep 17, 2026 · Updated 2 times

Summary

This study looks at how different meals before exercise affect amino acid levels in adults with phenylketonuria (PKU). Ten participants will try water, carbohydrates, or protein before doing aerobic and resistance exercises. Researchers will measure changes in blood amino acids to see which pre-exercise meal is best for metabolic control.

What this could mean

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

Active substance
carbohydrates and protein supplements, water
What this could lead to
If successful, this could help determine the best pre-exercise meal for people with PKU to maintain stable amino acid levels during exercise.
What could go wrong
This is a very small early study with only 10 participants, so results may not apply to all PKU patients. It is observational and does not test a new 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

10 people

The number who actually took part.

Started

Oct 2025

Finished

Jul 2026

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

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: * Be over 18 years old, * Having a classic FKU diagnosis, * Not being actively engaged in sports, * Not having any other existing diseases, * Not having an active infection, * Have a BMI in the range of 20-28 kg/m2 within the last 3 months, * Agreeing to consume test meals and provide blood samples for parameters that will evaluate plasma amino acid levels as part of the research * Being willing to participate in this study Exclusion Criteria: * Presence of a chronic disease accompanying FKU disease (endocrine, etc.) * The individual with FKU has mental retardation or is deemed unfit for work based on psychomotor assessment, * Recent weight loss, history of hospitalisation, a past infection, or a diagnosed illness * Use of drugs or alcohol that alter protein and energy metabolism (e.g., corticosteroids, etc.) * Pregnancy status * Smoking habits The considerations to be taken into account when planning the day/date of the test are as follows. * Having engaged in heavy exercise or sports within 24 hours before the application of test diets, * Being in the menstrual period for female patients.

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Conditions

The condition(s) this trial relates to.

classic phenylketonuria Motor Activity phenylketonuria

As listed by the trial registrant

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

Phenylketonuria

Contacts and locations

Locations

  • Hacettepe University

    Ankara, Ankara, 06100, Turkey (Türkiye)

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