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Beans and lentils: the secret weapon for competitive swimmers?

NCT ID NCT07315529

Knowledge-focused Sponsor: San Raffaele Telematic 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Updated 1 time

Summary

This study looked at whether adding more legumes (like beans, lentils, and chickpeas) to a Mediterranean diet could improve hydration, heart rate balance, and swimming performance in competitive swimmers. Thirty-nine adolescent and young adult swimmers were split into groups based on how many servings of legumes they ate each week. Over five months, researchers measured body water levels, heart rate variability, and swim speed. The goal was to see if a simple diet change could help athletes without changing their training routine.

What this could mean

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

Active substance
Legume-enriched Mediterranean diet
What this could lead to
If successful, this could show that a simple dietary change—eating more beans and lentils—can help athletes stay hydrated and perform better without extra training.
What could go wrong
This is a small, completed study with only 39 swimmers, so results may not apply to other athletes or the general public. Dietary changes were self-reported, which can be unreliable.

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

39 people

The number who actually took part.

Started

Feb 2025

Finished

Jul 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 30 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: * Competitive swimmers training at least six sessions per week. * Age ≥18 years. * Ability to complete an online questionnaire in Italian prior to the first clinical evaluation. * Willingness to comply with the prescribed legume intake pattern for the assigned group. * Provision of written informed consent. Exclusion Criteria: * Current use of performance-enhancing drugs or any chronic medication. * Musculoskeletal injury or medical conditions that could interfere with training or study assessments. * Consumption of alcohol or caffeinated beverages within 15 hours before testing sessions. * Inability or unwillingness to complete the scheduled assessments or to provide informed consent.

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Conditions

The condition(s) this trial relates to.

Feeding Behavior tinea pedis

As listed by the trial registrant

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

Athlete Diet habits

Contacts and locations

Locations

  • San Raffaele Open University

    Roma, RM, 00141, Italy

More trials for these conditions

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