Plasma adiponectin concentration is associated with skeletal muscle insulin receptor tyrosine phosphorylation, and low plasma concentration precedes a decrease in whole-body insulin sensitivity in humans. - Stefan,N.; Vozarova,B.; Funahashi,T.; Matsuzawa,Y.; Weyer,C.; Lindsay,RS.; Youngren,JF.; Havel,PJ.; Pratley,RE.; Bogardus,C.; Tataranni,PA. (Diabetes, 2002)