The Effect Of Living High-Training Low On RBC Membrane Fluidity And Maximum Oxygen Uptake Of The Anemic Athletes

HiLo is a new and effective endurance training method these days. It refers to living in altitude (about 2500m) and training in normoxia. Many reports suggested that HiLo can improve the adaption of the body to hypoxia by meanings of respiration, cardiovascular, blood and skeletal muscles, and can improve oxygen transportation in amount and rate, thereby improve somatic function and performance. But subjects of those studies were athletes. No body once kept anemic athletes as subjects. The trait of the anemic athletes is poor hemoglobin level, and somatic function and performance are affected by it. In order to discuss the effect of HiLo to anemic athletes, the study try to carry through aerobic performance and red blood cell (RBC) membrane fluidity.The subjects of the study are 14 sports anemic athletes, they are all female and randomly divided into 2 groups: living high-training low group (6) and control group (8). During the 25 days experimental period, test group slept in the hypoxic chamber (equivalent to 2500m altitude) from 8p.m. to 7a.m. the next day and trained in normoxia in days. Another group slept and trained in normoxia all of the time. The training and eating of both groups must be the same. In addition, there are 3 ergometer exercises (70%VO2max) in hypoxia once a week for test group, and each lasts 25min. The same to control group except for oxygen environment. They trained in normoxia. Meanwhile the normal training of these days was canceled. VO2max and blood lactate threshold were obtained before and after the experiment. Blood samples were obtained before, during and after the hypoxic exposure, measuring red cell membrane fluidity. Through the above research, logical induction led to the following:(1) After 25-day HiLo, the RBC membrane fluidity of control group changed abnormally, but the RBC membrane fluidity of test group was raised 3 weeks after the experiment。(2) After 25-day HiLo, the exercising SpO2 and the recovering speed of the text group were raised(P<0.05)(3) After 25-day HiLo, the VO2max of control and test group were not changed; the lactate threshold of test group was not changed, but the lactate threshold of control group declined.The results suggested that HiLo could improve the RBC membrane fluidity of sports anemic athletes and improve the exercising SpO2 and recovering time in hypoxia. Because the training program has been changed, so the maximum oxygen uptake and lactate threshold have not been improved.