Clinical trial Recruiting at 1 site Interventional Ages 18 to 35 Men only

Exploring the role of non-essential amino acids in muscle protein synthesis in healthy young men

Official title: The Importance of Non-essential Amino Acids for Maintaining Skeletal Muscle Protein Synthesis Rates in Healthy Young Men

Run by Maastricht University Medical Center · NCT06687343 · Data updated 2026-11-12

This study is testing whether taking non-essential amino acid supplements can help healthy young men build muscle and improve their metabolism compared to essential amino acids and a control supplement.

Quick facts

Study typeInterventional
Ages18 Years to 35 Years
SexMen only
Enrollment64 (estimated)
SponsorMaastricht University Medical Center
Academic / other
Locations1 site (Maastricht)
StatusRecruiting
StartedNovember 14, 2024
Main results expectedSeptember 2026
Study endsDecember 2026
Registry record updatedDecember 24, 2024
Trial IDNCT06687343 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are healthy males aged 18 to 35 with a BMI between 22 and 30.

Probably not a fit

Patients with metabolic disorders, cardiovascular diseases, or those participating in structured exercise programs may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the impact of dietary non-essential amino acids (NEAA) on muscle protein synthesis and overall metabolism in healthy young males. Participants will be randomly assigned to receive either NEAA supplements, essential amino acid (EAA) supplements, or a control maltodextrin supplement over a 10-day period. The study employs a double-blind, parallel design to ensure unbiased results. By examining how varying levels of NEAA affect muscle building and energy metabolism, the research aims to provide insights into optimal dietary practices for muscle maintenance.

Why it matters

Potential benefit: If successful, this study could enhance dietary recommendations for maintaining muscle mass in young men.

How similar studies have gone: While the role of essential amino acids is well-studied, the specific focus on non-essential amino acids in this context is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male
* Age between 18 and 35 y inclusive
* BMI between 22 and 30 kg/m2
* Non-smoker
* Having given informed consent

Exclusion Criteria:

* Participating in a structured (progressive) exercise program
* Smoker
* Diagnosed GI tract disorders or diseases
* Diagnosed musculoskeletal disorders
* Diagnosed metabolic disorders (e.g. diabetes)
* Cardiovascular disease
* Hypertension (blood pressure above 140/90 mmHg)
* Donated blood 3 months prior to test day
* Use of any medications known to affect protein metabolism (i.e. corticosteroids, non-steroidal anti-inflammatories).
* Chronic use of gastric acid suppressing medication
* Chronic use of anti-coagulants
* Any intolerance to foods included in the standardized diet intervention
* Any implants that would be a contra-indication for performing an MRI scan

Where it's running

  • Maastricht University Medical Center
    Maastricht, Netherlands
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.