Left Ventricular Function and Cardiovascular Responses during Moderate Exercise ; Investigation of the Exercise M-mode Echocardiography

Using exercise echocardiography (M-mode method) with a supine-position leg ergometer, we examined cardiovascular responses and the contractile wall movement and pumping function of the left ventricle in healthy male subjects. Under a moderate exercise load equivalent to the optimum exercise intensity, it is necessary to fully understand changes in PRP and systolic blood pressure to accurately estimate myocardial oxygen demand. Decreases in the telediastolic and telesystolic volumes of the left ventricle, especially a marked decrease in the telesystolic volume, led to differences between the two volumes, resulting in an increased EF. There was a high correlation between changes in PRP and EF during exercise. Although exercise echocardiography requires complex measurement techniques, it is very useful in physiotherapy for risk control in cardiac rehabilitation.