Reduced glycogen availability is associated with increased AMPKalpha2 activity, nuclear AMPKalpha2 protein abundance, and GLUT4 mRNA expression in contracting human skeletal muscle. - Steinberg GR; Watt MJ; McGee SL; Chan S; Hargreaves M; Febbraio MA; Stapleton D; Kemp BE (Applied Physiology, Nutrition & Metabolism, 2006)