Fifty-two pharmacologically treated hypertensive patients were randomized to one of four treatment groups: (1) diastolic blood pressure biofeedback, (2) progressive deep muscle relaxation training, (3) self-directed relaxation training, or (4) medication alone. Data collection occurred during baseline, treatment, and 1-year follow-up phases in a laboratory, a medical clinic, and the patient's own home. Patients from all four groups combined showed mean blood pressure reductions of -10.2/-5.5 mmHg on clinic recordings and -2.4/-0.7 mmHg on home recordings, which were maintained throughout the follow-up period. There were no significant differences among the four groups in terms of blood pressure reduction. Patients given adjunctive behavioral treatment showed significantly larger reductions in medication usage compared to patients treated with medication alone, but there were no significant differences among the three behaviorally treated groups. Patients who showed medication reductions did not show subsequent blood pressure elevation. The results suggest that combined behavioral and pharmacological therapy may be superior to pharmacological therapy alone in the treatment of essential hypertension.

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