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Fish oil for faster, smarter athletes? a trial puts Omega-3s to the test

NCT ID NCT07768423

Disease control Sponsor: The Jerzy Kukuczka Academy of Physical Education in Katowice Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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 Results may not be published yet.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
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This status has not been confirmed recently, so it may be out of date.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 Aug 17, 2026 · Last updated Aug 18, 2026 · Updated 1 time

Summary

This trial investigates whether taking omega-3 fatty acid supplements for four weeks can improve the omega-3 index, cognitive function, hormonal balance, speed, and endurance in competitive male soccer players aged 16 to 35. Participants will be randomly assigned to receive either omega-3 capsules or a placebo, and researchers will measure changes in blood markers, muscle function, and performance. The goal is to see if this simple dietary addition could offer a natural edge for athletes.

What this could mean

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

Active substance
Omega-3 fatty acid supplements (EPA and DHA)
What this could lead to
If omega-3s prove effective, they could become a simple, natural way for athletes to enhance cognitive and physical performance.
What could go wrong
The trial is small and short-term, and results may not apply to all athletes. Supplements can cause mild side effects like fishy aftertaste or digestive issues.

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 200 people

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

Started

Jan 2025

Expected to finish

Dec 2028

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

16 to 35 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:\*\* * Male competitive soccer players aged 16-35 years. * Regular participation in organized soccer training and competition. * A minimum of 6 years of systematic soccer training experience. * Participation in regular team training during the study period. * Habitual mixed diet. * Ability and willingness to maintain usual dietary habits and training load throughout the 4-week intervention. * Written informed consent provided by the participant. * For participants under 18 years of age, written informed consent provided by a parent or legal guardian and assent provided by the participant. \*\*Exclusion Criteria:\*\* * Current use of omega-3 fatty acid supplements or fish-oil products. * Use of omega-3 supplements within the 3 months preceding enrollment. * Known allergy or hypersensitivity to fish, seafood, fish oil, or any ingredient of the study supplements. * Diagnosed cardiovascular, metabolic, endocrine, gastrointestinal, neurological, inflammatory, autoimmune, or hematological disease. * Acute infection, injury, or illness that could affect participation in training or study assessments. * Use of medications or dietary supplements that could influence lipid metabolism, inflammatory status, hormonal profile, blood coagulation, cognitive function, or physical performance. * Regular use of anticoagulant or antiplatelet medication. * Significant change in diet, training volume, or supplementation during the study period. * Failure to comply with the supplementation protocol or attendance requirements. * Participation in another clinical or nutritional intervention study during the study period.

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As listed by the trial registrant

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

Cognitive function Physical performance Sports nutrition

How to take part

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  1. The places running it

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  2. The official record

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    Open the record ↗

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Contacts and locations

Locations

  • Jerzy Kukuczka Academy of Physical Education in Katowice

    RECRUITING

    Katowice, Mikolowska 72a, 40-065, Poland

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