Potato or bread with beef: which builds more muscle after a workout?

NCT ID NCT07367854

Knowledge-focused Sponsor: University of Illinois at Urbana-Champaign Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at how eating different food combinations after resistance exercise affects muscle protein synthesis. Fifteen healthy, recreationally active adults will do leg exercises and then eat either potato with beef, bread with beef, or beef alone. Researchers will take blood and muscle samples to measure how well the body builds new muscle protein.

What this could mean

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

Active substance: Potato and beef, bread and beef, or beef alone
What this could lead to: If successful, this could help refine dietary recommendations for maximizing muscle recovery after exercise.
What could go wrong: This is a very small, early-stage study (15 people) in healthy young adults, so results may not apply to other groups or real-world settings.

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 15 people

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

Started

Mar 2026

Expected to finish

Nov 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

19 to 40 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: * Age 19-40 yrs * Pre-menopausal * Recreationally-active * Weight stable for prior 6 months Exclusion Criteria: * Age outside of range (20 - 35 yrs) * Pregnancy * Irregular menstrual cycles (i.e., \~21 day or \~35 day cycle) * Participation in previous research using L-\[1-13C\] leucine and L-\[ring-2H5\] phenylalanine * Participation in other ongoing research that interferes with this study (e.g., conflicting diet, activity interventions, etc.)

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As listed by the trial registrant

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

Isotope labeling Muscle health Muscle protein synthesis Muscle protein synthetic response to protein Protein metabolism Recreational activities

How to take part

Only the study team decides who joins. These are the ways to reach them.

The places running it

2 sites. The list below names each one and where it is.
The official record

ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

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Potato or bread with beef: which builds more muscle after a workout?

What the study statuses mean