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本文对不同距离比赛运动员成绩及血乳酸的纵向变化进行了研究。对运动员3年纵向研究表明，随着运动成绩的显著提高，运动员赛后血乳酸显著降低。运动员参加不同距离比赛的血乳酸对比表明，以200米、100米赛后血乳酸最高，400米次之，50米列居第三，800米、1500米赛后血乳酸值最低。在不同泳姿中，仰泳赛后血乳酸最高，蛙泳、蝶泳血乳酸最低。混合泳项目血乳酸较高。
In this paper, the athletes from different distance competitions and the longitudinal changes of blood lactate were studied. Longitudinal study of athletes for 3 years showed that athletes’ blood lactate decreased significantly with the significant improvement of athletic performances. Athletes to participate in different distances from the blood lactic acid comparison shows that at 200 meters, 100 meters after the highest blood lactate, 400 meters, 50 meters ranked third, 800 meters, 1500 meters after the lowest blood lactate. In different swimmers, the highest blood lactate after the backstroke, breast stroke, butterfly blood lactic acid minimum. Mixed-blooded items higher blood lactate.