muscle growth Muscle protein synthesis
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: * Healthy males * Age between 18 and 35 y inclusive * BMI between 18.5 and 30 kg/m2
Exclusion criteria
Exclusion criteria: * Use of tobacco products * Non-steroidal anti-inflammatory drugs (NSAID) in the 4 days prior to the experimental trial * Allergies to milk proteins (whey or casein) * Allergies to house dust mites or crustaceans * Lactose intolerance * Phenylketonuria (PKU) * Blood donation within 2 months of study initiation * Arthritic conditions * A history of neuromuscular problems * Previous participation in amino acid tracer studies * Individuals on any medications known to affect protein metabolism (i.e. corticosteroids, non-steroidal anti-inflammatories, or prescription strength acne medications) * Diabetes * Training more than 5 days per week
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| From p23 of C1 protocol document: The main study endpoint is the fractional synthetic rate (FSR) of muscle protein synthesis (myofibrillar proteins) from 0-5 hours in the post-prandial period. | — |
Secondary
| Measure | Time frame |
|---|---|
| From p23 of C1 protocol document: * The fractional synthetic rate (FSR) of muscle protein synthesis (myofibrillar proteins) from -3-0, 0-2 and 2-5 hours in the postabsorptive and post-prandial period respectively. * Plasma free phenylalanine enrichment (expressed as MPE) * Plasma free tyrosine enrichment (expressed as MPE) * Plasma total phenylalanine (expressed as *mol/L) * Plasma total tyrosine (expressed as *mol/L) * Total plasma amino acids (AAmax [*mol/L]) * Plasma glucose (glucosemax [mmol/L]) * Plasma insulin (insulinmax [mU/L]) * Plasma total phenylalanine, leucine and tyrosine concentrations (expressed as *mol/L) | — |
Countries
Netherlands