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Gene test predicts who benefits from workout supplement

NCT ID NCT05604586

Knowledge-focused Sponsor: Poznan University of Life Sciences 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study looked at whether n-acetylcysteine (NAC), a common supplement, helps improve exercise performance in endurance athletes. Researchers tested 77 healthy adults who train regularly to see if their genes affect how well NAC works. The goal was to understand how genes related to glutathione metabolism influence the supplement's impact on physical performance and oxidative stress.

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

77 people

The number who actually took part.

Started

May 2022

Finished

Sep 2025

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 45 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: * Consent to participate in the study and acceptance of the established scheme for conducting the intervention * age range between 18 and 45 years old * regular training with a frequency of at least 3 times a week during the last year, Exclusion Criteria: * no consent to participate in the study and no acceptance of the established scheme of the conducted intervention * existing diseases of the blood system and neoplastic diseases * respiratory system diseases * obesity * any medical contraindications to exercise * Results obtained from exercise tests that do not meet the inclusion criteria * use of NAC during the last month * allergy to NAC * smoking * pregnancy and lactation

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As listed by the trial registrant

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

Gene polymorphisms Skeletal muscle performance

Contacts and locations

Locations

  • Poznan University of Life Science

    Poznan, Poland