Effect of Aerobic Exercises on Sex Hormones and Coagulation Factors in Postmenopausal Elderly Women

PURPOSE: to determine the effect of aerobic exercise training on sex hormones and coagulation factors in postmenopausal elderly women BACKGROUND: Cardiovascular disease (CVD) is the largest cause of death in women, and the risk of developing CVD increases after menopause . Because thrombosis is thought to be a cause of most acute cardiovascular events, abnormalities in endogenous coagulation and fibrinolysis may play an important role in the risk of an acute cardiovascular event. Aging is also associated with adverse changes in both coagulation and fibrinolysis. For instance, postmenopausal women exhibit higher fibrinogen levels and lower levels of endogenous fibrinolysis. Physical activity and physical fitness have consistently been linked to lower CVD rates in women. In fact, an inverse association between physical activity and total mortality, as well as a 50% reduction in risk of myocardial infarction, has been observed in physically active postmenopausal women. In addition to the numerous other benefits provided by regular physical activity, one of the mechanisms mediating the cardioprotective effect may be changes in the hemostatic system, particularly fibrinolysis HYPOTHESES: Aerobic exercises may have no effect on sex hormones and coagulation factors in elderly postmenopausal women RESEARCH QUESTION: Do aerobic exercises effect on sex hormones and coagulation factors in elderly postmenopausal women in response to exercises?