Methods Seventy two female SD rats were randomly divided into normal control group (group A, n=8), moderate-intensity exercise group (group B, n=32) and heavy-intensity exercise group (group C, n=32).

• 方法:成年健康雌性SD大鼠72只,随机分为对照组(A组,n=8)、运动1组(B组,n=32)和运动2组(C组,n=32),B、C组又分别分为运动后即刻组、24h组、48h组和72h组。