Effects of long-term hyperthermic preconditioning on the body’s oxidation and injury resistance capacities
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(P0.05),the SOD activity showed an increasing trend,but the difference was not significant(P0.05),the LDH activity decreased and the difference was very significant(P0.01);immediately after exhausted exercising,the MDA content in blood serum decreased and the difference was very significant(P0.01),the SOD activity increased and the difference was very significant(P0.01),the CK activity decreased and the difference was very significant(P0.05);in 1 hour after exhausted exercising,the MDA content decreased and the difference was very significant(P0.01),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.