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Pre-Sleep protein may boost athletic recovery better than Post-Workout

NCT ID NCT07170228

Symptom relief Sponsor: Serdar Bayrakdaroğlu 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested whether taking casein protein before sleep or after exercise improves recovery and performance in trained football players. Twenty-four male athletes were split into three groups: pre-sleep casein, post-exercise casein, or no supplement. Researchers measured anaerobic power and agility before and after a high-intensity workout. The goal was to see if timing makes a difference in how well the body recovers.

What this could mean

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

Active substance
micellar casein (a protein supplement)
What this could lead to
If timing matters, athletes could optimize recovery by taking casein before sleep rather than after exercise.
What could go wrong
This is a small, completed trial with only 24 male football players, so results may not apply to other athletes or the general public. The supplement is a common protein, so no major risks, but benefits may be modest.

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

24 people

The number who actually took part.

Started

Mar 2025

Finished

Mar 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 25 years

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: * Male football players aged 18 to 25 years. * At least three years of competitive soccer experience. * Engaged in structured soccer training at least three times per week during the previous six months. * Clearance to participate based on the Physical Activity Readiness Questionnaire (PAR-Q) (Thomas et al., 1992; Bredin et al., 2013). * Provided written informed consent prior to participation. Exclusion Criteria: * Any musculoskeletal injury or surgery within the past six months. * Reported milk or casein intolerance or allergy. * Regular use of ergogenic supplements such as protein or creatine during the previous four weeks * Medical conditions or limitations that could interfere with maximal exercise performance. * Non-compliance with study procedures or training/testing protocols.

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As listed by the trial registrant

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

Athletic performance

Contacts and locations

Locations

  • Gumushane University, Faculty of Sport Sciences

    Gümüşhane, Gümüşhane Province, 29100, Turkey (Türkiye)

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