| （1.Department of Physical Education，Education School，SUN Yat-sen University，Guangzhou 510275，China；2.Department of Sports Engineering and Sports Information Technology，Key Laboratory of Sports Engineering of General Administration of Sport of China，Wuhan Sports University，Wuhan 430079，China） Abstract: In order to understand and study the effects of green tea extract on eliminating fatigue produced by an-aerobic exercising, by means of experiment comparison the authors analyzed the changes of the anaerobic exercis-ing capacity of excellent tae kwon do players and wrestlers after they had taken green tea extract and a placebo, and the changes of such indexes as BU, MDA, CK, SOD and GSH-PX after anaerobic exercising, and revealed that un-der the same conditions, different exercising modes and high intensity anaerobic exercise loads, taking green tea ex-tract can not only reduce the serum CK activity and BU content of the wrestlers, but also significantly increase the MDA content and GSH-PH activity of the tae kwon do players. The research results indicate that green tea extract can effectively restrain and repair skeletal muscle damages caused by anaerobic exercising, lower muscle cell mem-brane permeability or reduce cell membrane structural damages, restrain the escalation of decomposition of the body’s structural proteins and functional proteins caused anaerobic exercising, and via mechanisms such as enhanc-ing the activity of oxidation resisting enzyme in the body of athletes as well as directly or indirectly eliminating free radicals in oxygen and their metabolites, reduce the damage done by free radicals to the body, enhance the body’s oxidation resisting capacity, eliminate kinetic fatigue, and enhance the body’s anaerobic exercising capacity.
Key words: sports biochemistry；green tea extract；anaerobic exercising；kinetic fatigue；free radicals in oxygen |
