(School of Physical Education,South China Normal University,Guangzhou 510006,China) Abstract: In order to probe into the effects of aerobic exercise combined with resveratrol on cardiomyocyte apoptosis factors TNF-α and Caspase-3 in type 2 diabetic rats, the authors prepared 40 2-month old male SD rats, randomly selected 8 rats to form a normal control group (ZA), fed them with standard feedstuff, intraperitoneally injected a small dose of streptozotocin into the remaining rats on the basis of high-fat and high-carbohydrate diet to establish a type II diabetic rat model, divided type II diabetic model rats randomly into 4 groups, namely, a model calm group (TA), a model exercise group (TY), a model resveratrol gavage calm group (TB), and a model resveratrol gavage exercise group (TYB), let the rats in the exercise groups swim in a load free condition 6 days a week, 7 weeks later, checked the fasting blood sugar level, blood fat index, morphological changes of myocardial tissue cells as well as myocardial TNF-α and Caspase-3 con-tents of the rats in various groups, and revealed the following findings: 1) in 30, 60 and 120 minutes after OGTT, the blood sugar concentration of the rats in groups TY, TB and TYB decreased significantly (P<0.01) as compared with the rats in group TA ; as compared with the rats in group TA, the serum TC, TG and TDL levels of the rats in groups TY, TB and TYB decreased significantly (P<0.05 or P<0.01); as compared with the rats in group ZA, the cardiac muscle of the rats in group TA showed pathological changes; as compared with the rats in group TA, the myocardial pathological changes of the rats in groups TY, TB and TYB were alleviated significantly; 2) as compared with the rats in group ZA, TNF-α in myocar-dial tissue of the rats in group TA increased significantly (P<0.01); as compared with the rats in group TA, TNF-α in myo-cardial tissue of the rats in groups TY, TB and TYB decreased significantly (P<0.05); as compared with the rats in group TYB, the level of expression of TNF-α in myocardial tissue of the rats in groups TY and TB increased significantly (P<0.05); as compared with the rats in group ZA, Caspase-3 in myocardial tissue of the rats in group TA increased signifi-cantly (P<0.01); as compared with the rats in group TA, Caspase-3 in myocardial tissue of the rats in groups TY, TB and TYB decreased significantly (P<0.05); as compared with the rats in group TYB, Caspase-3 protein expression level of the rats in groups TY and TB increased significantly (P<0.05). The said findings indicate the followings: myocardial tissue of type II diabetic rats shows pathological changes; aerobic exercise, resveratrol and combined intervention may reduce the expression of cardiomyocyte apoptosis factors and improve pathological changes of myocardial tissue of diabetic rats by reducing TNF-α and Caspase-3 contents in myocardial tissue of diabetic rats; the cardiomyocyte apoptosis factor expres-sion reducing effect produced by aerobic exercise and resveratrol combined intervention is better than that produced by aerobic exercise intervention or resveratrol intervention alone. Key words: sports medicine;type II diabetes;aerobic exercise;resveratrol;cardiac muscle;TNF-α;Caspase-3
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