Methods: The rat aging models were randomly divided into control group and exercise groups which include 0.5h exercise group,1h exercise group and 2h exercise group. After 12 weeks,SOD,GSH-PX,CAT,MDA,H2O2 contents in blood were measured.

• 方法:建立衰老大鼠模型；随机分为对照组和三组运动组；运动组分别给予每天0.；5；1；2 h游泳训练；12周后检测血清中超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-px)、过氧化氢酶(CAT)、丙二醛(MDA)、过氧化氢(H2O2)含量。