Objective To increase the capacity of blood oxygen-carrying of the endurance performance in athletes is the goal of altitude training. The key factor in the achievement of enhanced hematological variables is the stimulation in the hypoxia condition. Reticulocyte celles is the earliest red blood cells released to the bloods, it to be matured about 4days in the marrow. There are lots of research in the clinic tested reticulocyte can be monitor the change of the bone marrow hematopoietic system. The purpose of this study was to find out the effect of altitude training on reticulocyte indices of elite endurance athletes, further to analyzes the kinetics of erythropoiesis and hematological variables during and after altitude training. Methods The main content of high altitude training are as following: 1~2 weeks before the plateau, the main content of training was special aerobic endurance training and special strength endurance training; 1~5 days after plateau, the main content of training was Low intensity, relaxation of the adaptive training; 5~15 day after plateau, the main content of training was Intensive training phase, the main content of training was aerobic endurance and greater intensity of the special training; 16~20 days after the plateau, adjustment training 21~25 days after the plateau, the main content of training was same to the training plan of 5~15 day after plateau; 2~3 days after return to the sea level, adjustment training; 1~2 days after return to the sea level, the mainly training content was rhythm and strength training; 2 weeks after return to the sea level, the mainly content of training was normal training, the intensity of training was greater than the intensity in the sea level. At this stage, we tested the changes of the reticulocyte indices before \after half past three weeks altitude (2366m, DuoBa, QingHai) training, to provided the basis for the develop research the influence of the bone marrow hematopoietic system. Blood parameters were collected two days before altitude training\two days after off altitude\ two weeks after altitude. All the data measured from venous blood samples (1.5~2ml) collected via venipuncture from athletes in a supine position. All the samples were tested using ADVIA120. Data were analyzed by spss17.0 software.
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