作　　者： ;

机构地区： 广东外语艺术职业学院

出　　处： 《体育学刊》 2010年第7期90-94,共5页

摘　　要： 通过一次递增负荷至力竭运动对机体血清中自由基代谢、CK和LDH活性的影响,观察运动后恢复期的变化;给受试者1个月高温预处理,即发生热休克反应,之后再进行一次递增负荷,检测机体血清中自由基代谢、CK和LDH的活性,从而探讨在递增负荷运动中,长期高温预处理对机体抗氧化和抗损伤能力的影响。结果发现:1个月高温预处理后与预处理前比较,安静时MDA含量减少且差异有显著性(P<0.05),SOD活性有上升趋势,但差异无显著性(P>0.05),LDH活性下降且差异有非常显著性(P<0.01);力竭运动后即刻,血清MDA含量减少且差异有非常显著性(P<0.01),SOD活性升高且差异有非常显著性(P<0.01),CK活性下降且差异有显著性(P<0.05);力竭运动后1 h,MDA含量减少且差异有非常显著性(P<0.01),SOD活性升高且差异有非常显著性(P<0.01)。研究结果表明,长期高温预处理能提高机体抗氧化能力,减轻自由基所致损伤,对急性运动所致机体损伤具有一定的保护作用。 In order to observe the effects of one load increment to exhausted exercising on the free radical metabolism and CK and LDH activities in the body＇s blood serum as well as changes made in recovery period after exercising, the author provided the testees with 1-month hyperthermic preconditioning, i.e. to produce a thermal shock reaction, then made one load increment, tested the free radical metabolism and CK and LDH activities in the body＇s blood serum, thus probed into the effects of long-term hyperthermic preconditioning in load increased exercising on the body＇s oxidation and injury resistance capacities, and revealed the following findings： as compared with the same before conditioning, after 1-month hyperthermic preconditioning, the MDA content in a calm condition decreased and the difference was significant （P〈0.05）, the SOD activity showed an increasing trend, but the difference was not significant （P〉0.05）, the LDH activity decreased and the difference was very significant （P〈0.01）; immediately after exhausted exercising, the MDA content in blood serum decreased and the difference was very significant （P〈0.01）, the SOD activity increased and the difference was very significant （P〈0.01）, the CK activity decreased and the difference was very significant （P〈0.05）; in 1 hour after exhausted exercising, the MDA content decreased and the difference was very significant （P〈0.01）, the SOD activity increased and the difference was very significant. The said findings indicated that long-term hyperthermic conditioning can enhance the body＇s oxidation resistance capacity and reduce injury caused by free radicals, having a certain protection function on acute body injury caused by exercising.

关 键 词： 运动生物化学 长期高温预处理 自由基代谢 激酸激酶 乳酸脱氢酶

领　　域： [文化科学] [文化科学] [文化科学]