Plant protein showdown: oat vs. pea – which one digests best?

NCT ID NCT06142084

Knowledge-focused Sponsor: Örebro University, Sweden Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study investigates how well different plant-based proteins (from oats and peas) are digested in the small intestine. Adults aged 18-75 with an ileostomy will consume protein meals on separate days, and the contents of their ileostomy bags will be analyzed to measure protein and amino acid absorption. The goal is to understand which plant proteins are more digestible and how they compare to lab-based models.

What this could mean

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

Active substance: plant-based proteins (oat and pea)
What this could lead to: If successful, this research could help design better plant-based protein sources and improve dietary recommendations for people with digestive conditions.
What could go wrong: This is a small, early-stage study with only 11 participants, so results may not apply to the general population. It measures digestion in people with ileostomies, which may differ from normal digestion.

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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 11 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Dec 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

18 to 75 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: 18 - 75 years * Body mass index: 18.5 - 30 kg/m2 * (double-loop) Ileostomy with an intact small bowel * Signed informed consent Exclusion Criteria: * Pregnancy or breastfeeding * Ileostomy \< 3 months before the study * Any clinically significant present or past disease/condition other than colon cancer which in the investigator's opinion could interfere with the results of the trial * Any clinically significant present or past medication which in the investigator's opinion could interfere with the results of the trial

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As listed by the trial registrant

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

Ileostomy - stoma

How to take part

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

The places running it

1 site. 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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Plant protein showdown: oat vs. pea – which one digests best?

What the study statuses mean