体位血圧反射の年令に伴う変化

抄録

The postural blood pressure reflex after a change of posture has been studied by Prof. K. Hukuda and his associates. It has been revealed by them that the pattern of the postural blood pressure reflex was modified by fatigue and constitution of individuals. The present authors studied the change of various measures on the postural blood pressure reflex in healthy Japanese males and females ranging in ages from six to fifty-four years. The time for restoration of the brachial blood pressure after the change of posture decreases with age up to forties, while it increases somewhat above fifty. The irregular undulation of the blood pressure in the time course of restoration is more marked in children and the aged than adults. There was found no difference between males and females in the reflex pattern. It is revealed from the results that adjustment of the blood pressure to the postural change developed with advancing age up to forties but began to fail over fifty.