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

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 fu nctional 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 creatine 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 deter-mined in the high load training week and last two weeks before the Olympic Games.

Results: All presented a certain relevance between the re-serve capacity of MBP and conventional function indices. There was significant positive correlation with T ( < 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( > 0.05), but there was sig-nificant negative correlation with BU ( < 0.05).

Conclusions: 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 fat igue.