Low endogenous thrombin potential in trained subjects.

Abstract:

INTRODUCTION:A paradox seems to exist: exercising leads to clotting activation in conventional clotting tests, but exercising persons have a low risk of thrombosis. In this study we tried to evaluate the effect of exercise performance status on in vitro plasma thrombin generation, which represents an overall function test of hemostasis. MATERIALS AND METHODS:We compared 56 trained subjects to 98 healthy age matched sedentary volunteers. Blood samples were analyzed for thrombin generation using calibrated automated thrombography. Microparticles were quantified using ELISA. Additionally prothrombin fragments 1 + 2, thrombin-antithrombin complex, tissue factor pathway inhibitor, antithrombin and prothrombin were measured. The group of the trained subjects performed an incremental cycle-ergometer exercise test after taking the blood sample. RESULTS:A significantly lower endogenous thrombin potential was observed in the group of the trained subjects compared to the sedentary individuals (p = 0.007). Microparticles (ELISA) were significantly lower in the trained subjects compared to the sedentary subjects (p = 0.001). Prothrombin fragments 1 + 2 (p < 0.001) and thrombin-antithrombin complex (p = 0.01) were significant higher in the trained subjects and antithrombin (p = 0.02) as well as prothrombin (p < 0.0001) were significantly lower in this group, whereas tissue factor pathway inhibitor values did not show significant differences. Both maximal and submaximal power output was significantly negatively related to endogenous thrombin potential (r = -0.43, r = -0.45) and thrombin peak (r = -0.44, r = -0.42). CONCLUSIONS:Trained subjects have a lower endogenous thrombin potential than sedentary subjects possibly explaining the lower incidence of thrombosis in this group despite a higher acute clotting activation during strenuous exercise.

journal_name

Thromb Res

journal_title

Thrombosis research

authors

Cimenti C,Schlagenhauf A,Leschnik B,Schretter M,Tschakert G,Gröschl W,Seibert FJ,Hofmann P,Muntean WE

doi

10.1016/j.thromres.2013.04.009

subject

Has Abstract

pub_date

2013-06-01 00:00:00

pages

e281-5

issue

6

eissn

0049-3848

issn

1879-2472

pii

S0049-3848(13)00141-2

journal_volume

131

pub_type

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