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  • Title: Balanced activation of coagulation and fibrinolysis after a 2-h triathlon.
    Author: Bärtsch P, Welsch B, Albert M, Friedmann B, Levi M, Kruithof EK.
    Journal: Med Sci Sports Exerc; 1995 Nov; 27(11):1465-70. PubMed ID: 8587481.
    Abstract:
    To examine whether exercise-induced thrombin formation is accompanied by increased in vivo plasmin formation, we measured molecular markers and neoantigens of the hemostatic system in 10 male subjects (mean 29 yr. range 19-38) before, immediately after, and 2, 8, and 21 h after a triathlon lasting 128-163 min. Thrombin-antithrombin (TAT) complexes, fibrinopeptide A (FPA), and tissue plasminogen activator (t-PA) antigen were maximally increased immediately after exercise and decreased thereafter rapidly. Prothrombin fragment 1 + 2 (PTF1 + 2), fibrin degradation products (FbDP) and plasmin-antiplasmin (PAP) complexes rose to a similar extent 0 and 2 h after exercise decreased thereafter. The maximal levels of PTF1 + 2, TAT, FPA, and FbDP were 1.5-, 2.1-, 1.8-, and 1.9-fold above baseline, respectively. This investigation shows that strenuous prolonged exercise leads to a moderate activation of blood coagulation resulting in thrombin and fibrin formation which is accompanied by a greatly enhanced plasmin generation. It is concluded that the hemostatic of healthy individuals is well kept in balance when stimulated by prolonged strenuous exercise.
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