Changes in the fibrinolytic system associated with physical conditioning

  • J. A. De Paz
  • J. Lasierra
  • J. G. Villa
  • E. Viladés
  • M. A. Martín-Nuño
  • J. González-Gallego


The effects of physical conditioning on plasma fibrinolytic activity were studied in two groups of subjects. Volunteers not engaged in any sport were compared with individuals having been subjected to aerobic conditioning (middle-distance runners, defined as men running more than 80 km per week). Plasma concentrations of the different components of the fibrinolytic system were evaluated before and immediately after a maximal effort treadmill protocol. Comparison of the resting parameters revealed that under basal conditions for plasma concentrations of plasminogen, fibrinogen, α2-antiplasmin, protein C and protein S there were no differences between the two groups. Concentrations of the fibrin degradation products (FbDP) and fibrinogen degradation products (FgDP) were significantly higher in the runners than in the control group, indicating an increased fibrinolytic potential that seemed to be a consequence of the reduced formation of tissue plasminogen activator-plasminogen activator inhibitor (t-PA-PAI) complexes. Acute maximal exercise resulted in pronounced fibrinolysis, evidenced by the elevation of FbDP and FgDP concentrations, in both groups of subjects. The acceleration of the fibrinolytic activity was larger in conditioned individuals, which could be accounted for by a higher t-PA release and reduced formation of t-PA-PAI complexes when compared to the untrained subjects.

Key words

Aerobic conditioning Fibrinolytic activity Tissue plasminogen activator Tissue plasminogen activator inhibitor 


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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • J. A. De Paz
    • 2
  • J. Lasierra
    • 1
  • J. G. Villa
    • 2
  • E. Viladés
    • 1
  • M. A. Martín-Nuño
    • 1
  • J. González-Gallego
    • 3
  1. 1.Service of HematologySan Millán HospitalLogroñoSpain
  2. 2.Institute of Physical EducationUniversity of LeónLeónSpain
  3. 3.Department of Physiology, Pharmacology and ToxicologyUniversity of LeónLeónSpain

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