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Less protein, same gains? rugby study tests smarter supplement strategy

NCT ID NCT07569770

Knowledge-focused Sponsor: University of Taipei 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether a lower-protein supplement with extra ingredients works as well as a high-protein shake for building muscle and improving performance. Twenty elite male rugby players took either a 40-gram whey protein shake or a 20-gram multi-ingredient supplement after training for 12 weeks. The goal was to see if athletes can get good results with less protein, which may be healthier.

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

20 people

The number who actually took part.

Started

Nov 2023

Finished

Jul 2024

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 26 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: * Elite rugby athletes in the university team * No consumption of performance-enhancing supplements (e.g., creatine, protein supplements, or anabolic-androgenic steroids) one month prior to the study * No current medication or major musculoskeletal injuries Exclusion Criteria: * Vegetarianism * Whey protein allergy * Body weight fluctuation of more than 10 kg in the past three months

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As listed by the trial registrant

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

Athletic performance Body composition Protein Whey protein

Contacts and locations

Locations

  • Institute of Sports Sciences, University of Taipei

    Taipei, 111036, Taiwan

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