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Whey protein boosts teen soccer stars?

NCT ID NCT05589129

Symptom relief Sponsor: University of Utah 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 taking a whey protein supplement twice a day helps adolescent soccer players improve their performance, recover faster, and change body composition during a 10-12 week competitive season. Thirty-one high school players aged 13-18 took either the protein or a placebo drink. Researchers measured fitness, muscle fatigue, and body changes.

What this could mean

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

Active substance
whey protein supplement
What this could lead to
If it works, this could show that whey protein helps teen athletes recover faster and perform better during their soccer season.
What could go wrong
This is a small, completed study with only 31 participants, so results may not apply to all athletes. The supplement is just a dietary addition, not a treatment for any disease.

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

31 people

The number who actually took part.

Started

Jul 2022

Finished

Oct 2022

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

13 to 18 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: * 13-18 years old; male and female High school soccer players Exclusion Criteria: * non-adolescents; untreated or underlying metabolic or cardiovascular diseases; allergies to dairy, or any allergies ingredients in the study provided granola bar or bagels, such as soy, wheat, tree nuts, peanuts, milk, and sesame.

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Conditions

The condition(s) this trial relates to.

Body Weight Changes sleep disorder

As listed by the trial registrant

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

Athletic performance Body weight changes Recovery Sleep

Contacts and locations

Locations

  • Grace Zimmerman

    Salt Lake City, Utah, 84112, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.