(Department of Physical Education,Huizhou University,Huizhou 516007,China) Abstract: In order to understand the effects of exercising on IR and IRS1 phosphorylation of the skeletal muscle of Fetuin-A induced insulin resistance mice, the author established an insulin resistance mouse model by applying bo-vine Fetuin-A intraperitoneal injection, divided the mice into an acute exercising group (AE), an 8-week exercising group (E) and a calm control group (C). Results: as compared with the mice in group C, the insulin resistance in-dexes of the mice in groups AE and E decreased very significantly (P<0.01); IRS1 (Tyr612) phosphorylation of the skeletal muscle of the mice in group AE increased very significantly (P<0.01); IR (Tyr1150) and IRS1 (Tyr612) phosphorylation of the skeletal muscle of the mice in group E increased very significantly (P<0.01); the GLUT4mRNA expression and glucose intake rate of the skeletal muscle of the mice in groups AE and E increased very significantly (P<0.01). The results indicated the followings: exercising can improve Fetuin-A induced insulin resistance very significantly; the 8-week exercising mechanism is related to the increasing of IR (Tyr1150) and IRS1 (Tyr612) phosphorylation and GLUT4mRNA expression of skeletal muscle; acute exercising is related to the in-creasing of IRS1 (Tyr612) phosphorylation and GLUT4mRNA expression of skeletal muscle. Key words: sports biochemistry;protein Fetuin-A;insulin resistance;IR (Tyr1150) phosphorylation;IRS1 (Tyr612) phosphorylation;mouse |