Changes in blood coagulation activity induced by heavy and light exercise

抄録

We examined the effects of short-term heavy and light exercise on coagulation activity to clarify the relationship between myocardial ischemia or sudden cardiac death and exercise. Nine healthy sedentary male volunteers performed 10 minutes of heavy (over 95% of maximum oxygen consumption) or light (60% to 65% of maximum oxygen consumption) exercise. Blood samples were obtained, blood pressure was measured and the participants were weighed before, immediately after, and 1 hour after exercise. Coagulation activity was determined by measuring rates of changes in blood viscosity using an oscillation-type viscometer without addition of anticoagulants.Hematocrit and systolic blood pressure were significantly and similarly higher immediately after heavy or light exercise. Coagulation activity increased immediately after exercise and returned to the baseline one hour later, but the magnitude of the increase was higher immediately after heavy, than after light exercise.
We concluded that general practitioners have to care for the rehabilitation training, especially in the acute heavy exercise, of the patients with atherosclerotic diseases.