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Carbs boost sprinting? small study tests pro Footballers' fuel

NCT ID NCT07668726

Knowledge-focused Sponsor: Göteborg University Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 eating more carbohydrates helps professional male football players perform better during pre-season training. Seventeen players followed two different diet plans: one with moderate carbs and one with extra carbs from drinks. Researchers measured how much high-speed running, sprinting, and jumping they did, along with how they felt. The goal is to understand if changing carb intake can improve training output and recovery.

What this could mean

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

Active substance
carbohydrate beverage (maltodextrin)
What this could lead to
If it works, this could help coaches and players fine-tune nutrition to maximize training performance and recovery during pre-season.
What could go wrong
This is a small, early-stage study with only 17 players, so results may not apply to all athletes or settings. The effect of extra carbs on performance may be small or inconsistent.

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

17 people

The number who actually took part.

Started

Apr 2026

Finished

May 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

Male participants only

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: * Professional male football player * Outfield player * Member of the recruited professional football team * Available to take part in the pre-season training period * Able to follow the study diet and beverage protocol * Able to wear a global positioning system device during training * Provided written informed consent Exclusion Criteria: * Goalkeeper * Injured at the start of the study period * Expected to leave the team on loan during the study period * Unable to complete both dietary conditions

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As listed by the trial registrant

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

Carbohydrate intake and exercise performance

Contacts and locations

Locations

  • Center for Health and Performance, Department of Food and Nutrition, and Sport Science University of Gothenburg, Sweden

    Gothenburg, 40530, Sweden