A preliminary study of beat-to-beat blood pressure biofeedback using the vascular unloading method.

概要

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Eight male normotensive, undergraduate students participated as subjects in blood pressure (BP) biofeedback training of two, 12-min periods. BP was measured continuously using the vascular unloading method (Yamakoshi, Shimazu, & Togawa, 1980), and the BP information was fed back to the subject on a beat-to-beat basis. They were trained to control either their systolic or diastolic BP in both upper and lower directions. Training was successful in five subjects for BP raising (3 for systolic and 2 for diastolic) and in one subject for BP lowering (diastolic). Although it is too early to draw a firm conclusion at present, from one simple experiment, the vascular unloading method appears to be feasible to BP biofeedback researchers in future studies. A possible mechanism of target BP changes, in addition, is discussed based on sonic physiological data obtained from simultaneous recordings. The possibility of applying a nonparametric randomization test for a single subject to the present data is also considered.
公益社団法人日本心理学会の論文