Objective To observe the effects of ginkgo biloba extract(GBE) on apoptosis of cardiomyocyte of overtrained rats and thus to explore the possible protection mechanism of cardiomyocytes damage from excessive exercise. Methods Twenty-four male Sprague-Dauley rats were randomly divided into sedentary control group(Group A,n=8), excessive exercise group(Group B,n=8), excessive exercise+ GBE group (Group C,n=8). The rats in group B and C swam for 7 weeks with incremental intensity. Cardiomyocyte apoptosis,Bax...