Respiratory Control in Hypertension

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We applied a respiratory biofeedback method to the patients with hypertension, and an attempt was made in blood pressure control by means of the breathing exercises. The results of our study were summarized as follows : Patients with hypertension showed more pronounced responses to exertions such as holding of breath, deep breathing, mental calculation than the normal control group. This finding indicates the instability or the cardiovascular system in the hypertensives and, at the same time, suggests a possibility of blood pressure control by way of the voluntary control of respiration in such patients. l) There occurred a significant diminution of the respiratory rate and an increase in the amplitude of respiratory movement when abdominal breathing and "susokkan" were introduced. The practice of biofeedback, nevertheless, had no conspicuous effect. 2) As compared with the control group, the patient group, with programmed respiratory exercises (abdominal breathing and "susokkan") exhibited a notably greater degree of hypotensive response. This fact suggests a possibility of lowering blood pressure by respiratory exercises in hypertensive patients.
日本バイオフィードバック学会の論文