A Probe Into The Assessment Of Biochemical And Physiological Indexes For Female Marathon Runners In Aerobic Endurance Training

China's marathon athletics, especially women's long-distance running, had ever createdresplendence in the world, which can be considered as a climax in China's history of athleticdevelopment and still remained in people's memory. Regrettingly, in the past several yearsChinese did not perform outstandingly in the worldwide and even Asian competitions, whichis, however, from the perspective of the development law of athletic sports, a normalphenomenon. At present, China's endurance items, marathon athletics in particular, are still ina period of hoarding strength. For the moment, the application of biochemical and physiological indexes to athletictraining has become a hot research topic in and out of China. This paper attempts to assess theaerobic endurance training through long-term monitoring and exploring the variation law andcharacteristics of some biochemical and physiological indexes of excellent marathon runners,such as heart rate (HR), blood lactate acid (BLA), serum creatine kinase (SCK), blood ureanitrogen (BUN), etc..Conclusions can be summed up as the following:1. Through monitoring HR in a three-stage no-oxygen threshold test, we can say that whenthe training load is increasing, HR is descending. HR value can function as an index forathletic intensity for the reason that to some extent HR is in direct proportion to athleticintensity. The comparison of HR indexes in the three stages of ***test will reveal thatdesirable training effect is obtained and training grade is prominently improved. BLA isanother important index for the assessment of the athlete's physiological load. Thecomparison of BLA indexes in the three stages of no-oxygen threshold test will alsoconfirm a satisfying training effect and an enhanced training grade. A high-levelathlete's abrupt ascending in BLA with the same training load will indicate a decline inhis or her physiological enginery, while a steady descending in BLA will be a sign of ameliorated aerobic ability. Therefore, it is reasonable to assess the training effectthrough a stage test of BLA after athletic training, and to determine the followingtraining load according to this test result.2. A long-term investigation in marathon team has made it clear that in order to preventoverfatigue, the integration of the pulse measurement in the morning and BUN andSCK monitoring is a pleasing method for training intensity assessment. The pulse in themorning is not only simple but also applicable to act as a sensitive index. Basic HR iscomparatively steady, and it will descend with the increasing training time andimproved training grade. If the basic HR suddenly speeds up or slows down, it is oftenan exhibition of poor enginery condition, and the concomitant discomfortable symptoms,if there are, also suggest possible overfatigue, which should draw enough attention.Within the monitoring to guard against overfatigue, BUN is used to assess a weeklytraining load, while SCK a weekly training intensity. By way of a collective analysis ofa three-month test of BUN, SCK and HR respectively for an athlete's conditionassessment, a coach can effortlessly get a good knowledge of the athlete's physiologicalload condition in order to adjust the subsequent training load in time.