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

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

Not applicable Interventional Maastricht University Medical Center · NCT06687343

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

PhaseNot applicable
Study typeInterventional
Enrollment64 (estimated)
Ages18 Years to 35 Years
SexMale
SponsorMaastricht University Medical Center Academic / other
Locations1 site (Maastricht)
Trial IDNCT06687343 on ClinicalTrials.gov

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.

Who should consider this trial

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

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

Why it matters

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

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

Eligibility criteria

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 this trial is running

Maastricht

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Healthy Malesmuscle protein synthesisamino acids
Last reviewed 2026-06-13 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.