The Effects Of Simulated Living High Training Low On Hemorheology After Altitude Training

Object:This study aimed to investigate possible alterations in hemorheological parameters in response to 3 weeks altitude training (2400m) in plain and explore the effect of HiLo(2800m) training to hemorheology.Methods:18 kickboxing athletes from Beijing Sport University were devided into two groups, "Living High Training High" group (HL) and "Living Low Training Low" group (C). There are three parts of this experiment for total 7 weeks. Protest for a week, altitude training at Lijiang (2400m) for 3 weeks and HiLo training for 3 weeks (2800m).Blood samples were drawn at pro test (Q),1 day(D1),4 days(D4),1 week(D7),2 weeks(2W) and 3weeks(3W) after altitude training. We detect hemodynamics and blood viscosity within 2 hours after blood samples collection.Results:(1) HCT was significantly higher than protest. HL and LL increased respectively by 4.30% and 4.30%. (2) Whole blood viscosity(WBV) after altitude training was higher than protest but not significantly. WBV (high rates of shear) of HL declined gradually, W3 compared with Dl reducing about 13.90%. (3) Erythrocyte aggregation and deformability index of HL and LL after altitude training declined slowly during 3 weeks. (4) After altitude training both of them had a significant rise of Hb and a significant drop of MCV.Conclusion:In our study, the blood viscosity indexes fell after altitude training and reached the lowest in a week. Blood flow has a good performance and HiLo can maintain the effection. Altitude training can improve erythrocyte deformation, erythrocyte aggregation and deformability improved after altitude training that can hold at least three weeks. The MCV after altitude.training declines.HiLo group and C group have same change trend shows that there is no effect of HiLo training on MCV.