脈波の基礎振動時間による拡張期血圧のバイオフィードバック

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Time Difference between Two Wave (TDTW) in the pulse waveform has been measured by the method developed by Tanaka and Kanai (also in this volume), and the present report discusses its validity as a target response for the modification of blood pressure through biofeedback, as well as problems concerned with its application. Fourteen normotensive female undergraduate students were used as subjects and were required to participate two days for this experiment. In order to see the correlation of TDTW and diastolic blood pressure taken by sphygmomanometer, measures were obtained for periods of rest (15min.), mental arithmetic and cold pressor test during the first day. Training for the voluntary control of TDTW was done on the second day. Subjects were divided into two groups ; those in the biofeedback were given usual feedback which varied accordingly to the changes in TDTW whereas those in the instruction group were given none. After 10 minutes of rest, subjects of both groups had alternately 5 up and 5 down trials, each of 3 min. duration, the order of which was counterbalanced. The results indicate the following : TDTW and diastolic blood pressure as measured by sphygmomanometer under rest, mental arithmetic and cold pressor conditions show a high inverse correlation. However individual differences in the regression coefficient of TDTW and diastolic blood pressure are large. Thus a previous conversion of TDTW into blood pressure values is required before its application to biofeedback.
日本バイオフィードバック学会の論文
1982-06-30

脈波の基礎振動時間による拡張期血圧のバイオフィードバック

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