Abstract
The effect of EMG biofeedback-assisted relaxation on blood pressure and selected biochemical parameters was evaluated in 38 patients with essential hypertension. Training consisted of 8 weeks of biofeedback and home practice of relaxation exercises. Mean blood pressure decreased in the experimental group from 144/90 to 133/84 mm Hg while the control group remained unchanged. Statistically significant decreases in the experimental group also occurred in muscle tension levels, in plasma aldosterone, and in urinary cortisol. Both aldosterone and cortisol are secreted by the adrenal cortex. It was concluded that the technique taught to the experimental group produced a reduction in skeletal muscle tension and a decrease in stress responding mediated by the adrenal cortex.
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Benson, H., Shapiro, D., Tursky, B., & Schwartz, G. D. Decreased systolic blood pressure through operant conditioning techniques in patients with essential hypertension.Science 1971,173 740–742.
Blanchard, E. B., Miller, S., Abel, G. G., Haynes, M. R., & Wicker, R. Evolution of biofeedback in the treatment of borderline essential hypertension.Journal of Applied Behavior Analysis 1979,12 99–109.
Chobanian, V., Gavras, H., Gavras, I., Bresnahan, M., Sullivan, P., & Melby, J. Studies on the activity of the sympathetic nervous system in essential hypertension.Journal of Human Stress 1978,4 22–28.
Clamage, D., Vander, A., & Mouw, D. Psychosocial stimuli and human plasma renin activity.Psychosomatic Medicine 1977,39(3), 393–440.
Esler, M., Julius, S., Zweifler, A., Randall, O., Harburg, E., Gardiner, H., & DeQuattro, V. Mild high-renin essential hypertension neurogenic human hypertension?New England Journal of Medicine 1977,296(8), 405–411.
Goldman, A., Kleinman, K. M., Snow, M. Y., Bidus, D. R., & Koral, B. Relationship between essential hypertension and cognitive functioning: Effects of biofeedback.Psychophysiology 1975,12(5), 569–573.
Kaplan, N.Clinical hypertension (2nd ed.), Baltimore: Williams and Wilkins, 1978.
Kristt, D., & Engel, B. Learned control of blood pressure in patients with high blood pressure.Circulation 1975,51 370–378.
McGrady, A., Mitch, P., Iannone, A., Marks, R., & Fine, T. Effect of direct feedback of systolic blood pressure in essential hypertension.American Journal of Clinical Biofeedback 1978,1(2), 58–60.
Nowaczynski, W., Genest, J., & Kuchel, O. Aldosterone, deoxycorticosterone, and corticosterone metabolism in essential hypertension. In J. Genest, E. Koiw, & O. Kuchel (Eds.),Hypertension: Physiopathology and treatment. New York: McGraw Hill, 1977. pp. 312–336.
Patel, C. H. Biofeedback aided relaxation and meditation in the management of hypertension.Biofeedback and Self-Regulation 1977,2(1), 1–41.
Selkurt, E.Physiology (4th ed.), Boston: Little, Brown, 1977, Chap. 7A, 18A.
Stone, R., & DeLeo, J. Psychotherapeutic control of hypertension.New England Journal of Medicine 1976,294(2), 80–84.
Surwit, R. S., Shapiro, D., & Good, M. I. Comparison of cardiovascular biofeedback, neuromuscular biofeedback, and meditation in the treatment of borderline essential hypertension.Journal of Consulting and Clinical Psychology 1978,42(2), 252–263.
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This work was supported by the Northwestern Ohio Heart Association Grant No. 93298. It was presented as a citation paper at the meetings of the Biofeedback Society in 1979 and 1980.
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McGrady, A.V., Yonker, R., Tan, S.Y. et al. The effect of biofeedback-assisted relaxation training on blood pressure and selected biochemical parameters in patients with essential hypertension. Biofeedback and Self-Regulation 6, 343–353 (1981). https://doi.org/10.1007/BF01000659
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DOI: https://doi.org/10.1007/BF01000659