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Timing is everything: could a common food additive give soccer players an extra sprint?

NCT ID NCT07737327

Symptom relief 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 30, 2026 · Last updated Jul 31, 2026 · Updated 1 time

Summary

This trial tests whether taking sodium citrate at a personalized time — when blood bicarbonate peaks — can improve repeated sprint performance in professional female soccer players. Twenty players will receive either sodium citrate or a placebo before a series of maximal sprints. The study measures power output, fatigue, and blood markers to see if the supplement reduces fatigue and enhances performance.

What this could mean

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

Active substance
sodium citrate (trisodium citrate) dissolved in flavored water, taken at an individually timed peak blood bicarbonate point
What this could lead to
If it works, this could point toward a simple dietary supplement strategy to reduce fatigue and improve sprint performance in athletes.
What could go wrong
This is a small, early-stage trial in a specific group (professional female soccer players), so results may not apply to other athletes or sports. The supplement may cause gastrointestinal discomfort or have no effect.

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 20 people

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

Expected to start

Aug 2026

An estimate. Start dates often move.

Expected to finish

Feb 2027

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

18 to 25 years

Sex

Female 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: * Female professional soccer players competing in the Turkish Women's Third League * Age between 18-25 years * Active training status (minimum 3 sessions per week) * Regular menstrual cycles * Both experimental trials scheduled in the same phase of the menstrual cycle, outside of menstruation * No use of nutritional supplements in the 4 weeks prior to the study * Willingness to provide written informed consent Exclusion Criteria: * Use of oral contraceptives * Irregular menstrual cycle * History of gastrointestinal disorders * Any musculoskeletal injury preventing maximal sprint performance * Smoking * Use of any medication that may affect acid-base balance * Pregnancy

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As listed by the trial registrant

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

Athletic performance Exercise-induced fatigue SOCCER

How to take part

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  1. The official record

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    Open the record ↗

  2. A doctor treating you

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