Androgen receptor density plays a meaningful role in muscle anabolism because it determines how strongly a muscle fiber responds to androgen signaling. Gabriel Alizaidy, MD, MS Androgen Physiology, Pharmacology, Use and Misuse Endotext NCBI Bookshelf Comprehensive review of the expanding roles of the carnitine pool in metabolic physiology: beyond fatty acid oxidation Journal of Translational Medicine Springer Nature Link Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health Architecture of androgen receptor pathways amplifying glucagon like peptide 1 insulinotropic action in male pancreatic cells ScienceDirect