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Study identifier: NCT07317921 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Validating IAAO for Muscle Outcomes

Condition: Protein Metabolism  ·  Sponsor: University of Toronto

PhaseNA
Planned participants8
Who can joinAll sexes, 18 Years to 35 Years
Healthy volunteersYes

About this study

Consuming dietary protein stimulates whole-body and muscle protein synthesis, the latter of which is typically measured using invasive primed constant infusions of stable isotopes with concurrent muscle biopsies. Alternative non-invasive methodologies have been developed (namely the indicator amino acid oxidation (IAAO) technique) to estimate the impact of protein ingestion on whole-body protein synthesis as a proxy for determining dietary protein requirements. Given that the IAAO technique is based on principles of protein metabolism which occur in the liver, it is unclear how representative the IAAO outcomes of whole-body protein synthesis is to skeletal muscle protein synthesis. Validation of the IAAO technique against gold-standard, biopsy-derived measures of muscle metabolism (i.e., muscle protein synthesis) would assist in mitigating the invasiveness of muscle physiology and nutrition research.

This description comes directly from the study's public registry record.

Talk to the study team

Sabrina T Barsky, Ph.D.  ·  16475400115  ·  sabrina.barsky@utoronto.ca

Always discuss trial participation with your own doctor first.

Locations (1)

Kinesiology & Physical EducationToronto, Ontario, CanadaRecruiting

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Source record: clinicaltrials.gov/study/NCT07317921