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目的 :探讨高住低练 (运动员睡在相当于海拔 2 5 0 0m的高度 ,在平原训练 )对机体氧化应激水平的影响。方法 :2 0名划船运动员随机分为实验组和对照组。实验组先进行 2周的低住低练 ,再进行 4周的高住低练 ,再进行 2周的低住低练 ;而对照组则进行 8周的低住低练。在 8周的实验期间 ,两组对象的训练内容、方式、运动量及强度均相同。分别于不同时间测定机体血清氧化应激水平。结果 :在整个实验过程中 ,实验组血清MDA浓度和SOD活性无明显变化 ,总抗氧化力第 5周出现明显下降 ,第 9周又出现明显升高。对照组血清MDA浓度第 5周明显下降 ,第 7周和第 9周则明显增加 ,而SOD活性和总抗氧化力的变化与MDA相反。结论 :4周模拟海拔 2 5 0 0m高住低练对机体的氧化应激水平有积极的效应。
Objective: To investigate the effect of high-living-low training (athletes sleeping at the altitude of 2500m and training in plain training) on the level of oxidative stress in the body. Methods: 20 rowers were randomly divided into experimental group and control group. The experimental group first carried out 2 weeks of low living low training, then 4 weeks of high living low training, then 2 weeks of low living low training; while the control group was 8 weeks low living low training. During the 8-week experiment, the training content, manner, amount of exercise and intensity of the two groups of subjects were all the same. The levels of serum oxidative stress were measured at different times. Results: During the whole experiment, serum MDA concentration and SOD activity did not change obviously. The total antioxidant capacity decreased obviously in the fifth week and obviously increased in the ninth week. The concentration of serum MDA in the control group decreased significantly in the fifth week and increased significantly in the seventh week and the ninth week, while the changes of the SOD activity and the total antioxidant capacity were opposite to those in the MDA. CONCLUSION: At 4 weeks, simulated low altitude training at a height of 2500m has a positive effect on the level of oxidative stress in the body.