Changes in haemostatic factors and activation products after exercise in healthy subjects with different ages.

Abstract:

:We studied exercise-induced changes in coagulation and fibrinolytic factors and activation products in different age categories. Thirty-eight sedentary males, divided in three age categories (cats I-III; 20-30, 35-45 and 50-60 y) were subjected to a standardized exercise test. Pre-exercise levels (cats I-III resp) of FVII:c (105 +/- 5, 121 +/- 6 and 123 +/- 7% NP), fibrinogen (2.35 +/- 0.12, 2.55 +/- 0.10 and 2.66 +/- 0.09 mg/ml), prothrombin activation fragment F1 + 2 (0.80 +/- 0.10, 0.80 +/- 0.11 and 1.22 +/- 0.16 nM), t-PA (5.2 +/- 0.6, 9.2 +/- 1.0, 8.6 +/- 1.2 ng/ml) and PAI-I (42.8 +/- 7.5, 67.6 +/- 7.6, 62.2 +/- 10.9 ng/ml) showed differences that seemed related to age. Regression analysis revealed associations with anthropometry (FVII:c, fibrinogen, F1+2, t-PA, PAI-1) rather than with age. Exercise-induced changes in coagulation (increase in von Willebrand factor and FVIII:c and a shortening of APTT) and fibrinolytic potential (increase in t-PA and u-PA) were of comparable magnitude for the three age categories. Hardly any change in F1 + 2 (6%) was observed, while thrombin-antithrombin complexes (93%), plasmin-antiplasmin complexes (79%) and D-dimer (77%) almost doubled during maximal exercise. We conclude that anthropometric differences play a more significant role than age on constitutive levels of haemostatic factors in participants up to 60 years of age. The magnitude of exercise-induced changes is comparable in the age categories under study, and simply super-imposed on constitutive (pre-exercise) levels. Clear evidence for prothrombin activation is lacking, but plasmin formation is enhanced during exercise.

journal_name

Thromb Haemost

authors

van den Burg PJ,Hospers JE,van Vliet M,Mosterd WL,Bouma BN,Huisveld IA

subject

Has Abstract

pub_date

1995-12-01 00:00:00

pages

1457-64

issue

6

eissn

0340-6245

issn

2567-689X

journal_volume

74

pub_type

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