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为了探讨急性运动对血清Ｔ－ＳＯＤ、Ｍｎ－ＳＯＤ及ＣｕＺｎ－ＳＯＤ活性的影响及它们与有氧能力的关系，让１４名青少年运动员在功率自行车上以逐级递增负荷的方式运动至力竭，测定了他们的ＶＯ２ｍａｘ及运动前后的血清Ｔ－ＳＯＤ、Ｍｎ－ＳＯＤ和ＣｕＺｎ－ＳＯＤ。结果发现：①急性运动可导致血清Ｔ－ＳＯＤ、Ｍｎ－ＳＯＤ活力发生非常显著的升高（Ｐ＜０．０１）。运动后血清ＣｕＺｎ－ＳＯＤ活性也有明显增加（Ｐ＜０．０５）。急性运动时血清ＳＯＤ活性增加可能是机体抗自由基损伤及延缓疲劳出现的一个防御机制。②血清Ｔ－ＳＯＤ、Ｍｎ－ＳＯＤ与ＶＯ２ｍａｘ之间存在着非常显著的正相关（Ｐ＜０．０ｌ）。ＣｕＺｎ－ＳＯＤ与ＶＯ２ｍａｘ之间也具有明显的相关性（Ｐ＜０．０５）。血清ＳＯＤ活性与有氧能力之间的密切关系，可能有利于更好地清除线粒体在有氧代谢过程中产生的氧自由基。
In order to investigate the effect of acute exercise on serum T-SOD, Mn-SOD and CuZn-SOD activity and their relationship with aerobic capacity, 14 young athletes were motored to exhaustion on power bicycles in a step-by- Their VO2max and serum T-SOD, Mn-SOD and CuZn-SOD were measured before and after exercise. The results showed that: (1) Acute exercise resulted in a very significant increase of serum T-SOD and Mn-SOD (P <0.01). After exercise, serum CuZn-SOD activity also increased significantly (P <0.05). Acute exercise increased serum SOD activity may be the body against free radical damage and delay the appearance of a defensive mechanism. ② Serum T-SOD, Mn-SOD and VO2max there is a very significant positive correlation (P <0.01). There was also a significant correlation between CuZn-SOD and VO2max (P <0.05). The close relationship between serum SOD activity and aerobic capacity may help to better eliminate the oxygen free radicals produced by mitochondria during aerobic metabolism.