Thromb Haemost 1990; 63(03): 430-434
DOI: 10.1055/s-0038-1645060
Original Article
Schattauer GmbH Stuttgart

Blood Coagulation after Long Distance Running: Antithrombin III Prevents Fibrin Formation

Peter Bärtsch
The Thrombosis Research Laboratory, Inselspital, Bern, Switzerland
André Haeberli
The Thrombosis Research Laboratory, Inselspital, Bern, Switzerland
P Werner Straub
The Thrombosis Research Laboratory, Inselspital, Bern, Switzerland
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Received 10. Oktober 1989

Accepted after revision 19. Februar 1990

30. Juni 2018 (online)


Physical exercise causes shortening of activated partial thromboplastin time (aPTT) and euglobulin clot lysis time. To investigate whether this activation of coagulation and fibrinolysis leads to in vivo thrombin or plasmin action after long distance running, 19 well trained male runners (36-65 years) were examined 5 to 53 min after termination of a 100 km race and 5 days later after at least 1 day without physical exercise. Compared to the control examination aPTT was decreased (30.2 ± 2.8 vs 35.3 ± 3.0 sec) and the following parameters were increased after the race: betathromboglobulin (40 ± 16 vs 23 ± 7 ng/ml), thrombin-antithrombin III (TAT) complexes (5.5 ± 3.4 vs 2.3 ± 0.7 pg/1), the fibrin(ogen) degradation products fragment E (57 ± 15 vs 35 ± 7 ng/ml) and B(3 15-42 (8.5 ± 2.5 vs 6.5 ± 2.5 ng/ml) (all p values <0.001). Platelet count, platelet factor 4, fibrinoepetide A (FPA) and haematocrit did not change significantly. Increased TAT complexes and unchanged FPA suggest that the generated thrombin was fully inactivated by antithrombin III (AT III) and did therefore not give rise to fibrin formation. The small increase of fibrin(ogen) degradation products indicates a minor in vivo activity of the fibrinolytic system. This investigation demonstrates the importance of AT III in the regulation of haemostasis in activated blood coagulation.