evidence card · bcaa_muscle_building_beyond_protein
BCAA supplementation increases muscle protein synthesis or builds muscle beyond what adequate dietary protein provides
H1
▽ contradicts
stakes low
1 post scored
·
across 1 account
·
2 sources
Summary
When protein intake is adequate, BCAA supplementation does not further stimulate MPS in humans. Isolated leucine/BCAAs in isocaloric/iso-protein designs are null. BCAAs became popular from rat and bolus-feeding studies that don't translate.
Five-score assessment
Scores not yet assigned for this card. (Legacy card; will be populated on next refinement.)
Scope
Population
adults with adequate dietary protein intake (~1.6 g/kg/d)
Intervention
BCAA supplementation
Outcome
muscle protein synthesis, lean mass gain
Not supported for
- additional effect beyond adequate protein