Ultrasonic cardiograms were performed on 120 aged subjects. Experiments showed the left ventricular function in the hypertensive aged group (80 cases) was lower than that in the aged normal blood pressure group (40 cases)

while the left ventricular function in the deficiency of Heart-energy hypertensive patients (46 cases) was lower than in the non-deficiency of Heart-energy hypertensive patients (34 cases). After practising Qigong for 1 year

cardiac output was increased. The total peripheral resistance decreased and the ejection fraction mitral valve diastolic closing velocity and the mean velocity of circumferential fiber shortening tended to be increased. The results indicate Qigong has a regulatory effect on haemodynamic alteration

as well as on improvement of the left ventricular function. Nailfold microcirculation detection of 120 aged subjects was made. The results showed that hypertension had an accelerating effect on the disturbance of microcirculation. The incidence of disturbance of microcirculation was 73.91% in the deficiency of Heart-energy hypertensive patients

after 1 year of Qigong practice

the incidence of disturbance of microcirculation was 39.13% (P<0.01). The results suggest Qigong has an effect on Heart-energy and regulation of the blood channel.