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 Increasing Androgen Sensitivity SecondLife L Carnitine Tartrate Supplementation for 5 Weeks Improves Exercise Recovery in Men and Women: A Randomized, Double Blind, Placebo Controlled Trial Carnitine: Which type is right for you? Comprehensive review of the expanding roles of the carnitine pool in metabolic physiology: beyond fatty acid oxidation Journal of Translational Medicine Springer Nature Link