男子赛艇运动员赛前6周训练微循环血流储备能力与相关生化指标的关系

The relationship between reserve capacity of microcirculatory blood perfusion and related biochemical indices of male rowers in six weeks' pre-competition training

目的:通过对奥运会赛前6周运动员微循环血流储备能力的变化与常规机能指标关系的研究,探讨微循环血流储备能力用于运动员机能状态监控的可行性。方法:以国家赛艇队8名男子轻量级运动员为研究对象,每周一6:30-7:00在安静空腹状态下,指尖采血进行血红蛋白(Hb)、红细胞数量(RBC)、血尿素(BU)和血清肌酸激酶(CK)的测试,同时,训练负荷较大的两周以及奥运会前的两周分别进行静脉取血测试睾酮(T)和皮质醇(C);在相应的时间节点使用Peri Flux System 5000激光多普勒血流监测仪对运动员进行微循环血流储备能力测试。结果:运动员肱二头肌微循环血流储备能力与常规机能指标均呈现出一定的相关性,其中与T存在显著性正相关,(P<0.05),与Hb、C和T/C存在正相关,但不具有显著性(P>0.05);与BU和CK存在负相关,且与BU的相关具有显著性(P<0.05);结论:微循环血流储备能力在评价训练强度对机体疲劳积累的影响时更敏感,其的变化与常规生化指标变化特点具有一定的一致性,可在一定程度上作为运动员机能状态评价和疲劳程度判断的一项无创性指标。

Objective： To study the change of reserve capacity of microcirculatory blood perfusion （MBP） and the relationship between some conventional function indices of elite male rowers in 6 weeks before the Olympic Games. The feasibility of the MBP using for athletes functional status monitoring was also discussed. Methods： Eight male lightweight rowers of Chinese National Rowing Team were selected as the subjects. Blood samples were taken every Monday morning before eating breakfast （6：30-7：00）. The indices including hemoglobin （Hb）, red blood cells （RBC） ,blood urea （BU） and ereatine kinase （CK） were tested,while reserve capacity of MBP were collected with PeriFlux 5000 system on the same day. Meanwhile,the venous blood samples were collected and the levels of testosterone （T） and cortisol （C） were determined in the high load training week and last two weeks before the Olympic Games. Results： All presented a certain relevance between the reserve capacity of MBP and conventional function indices. There was significant positive correlation with T （ P 〈 0.05）, and it was correlated with Hb, C and T/C positively, negative correlation with CK, and they all did not have significant difference（P 〉 0.05）, but there was sig- nificant negative correlation with BU （P 〈 0.05）. Conclusion： There is a certain consistency between change of reserve capacity of MBP and the characteristic of conventional function indices. And reserve capacity of MBP is more sensitive in fatigue monitoring after intensity training. In a certain extent, reserve capacity of MBP as a non-invasive indices can be used for evaluating the functional state and judging the degree of fatigue.