The purpose of this study was to investigate the effectiveness of yoga relaxation, pranayama and thermal biofeedback techniques in the management of high blood pressure and stresses. The sample of the study consisted of 14 essential hypertensive patients. Seven of these patients underwent training in yoga and thermal biofeedback technique for a period of six months. Other seven patients served as a comparison group. Results showed a significant reduction in the systolic blood pressure during treatment phases. Moderate reduction in the diastolic pressure was noticed, only when the thermal feedback was introduced. This also corresponded to significant reduction in the intake of anti-hypertensive drugs. Training in yoga and thermal biofeedback procedures were not effective in altering the perceptions associated with stressful experiences.

Published - "Yoga, Pranayama, Thermal Biofeedback techniques in the Management of Stress and High Blood Pressure" - Latha S & K V Kaliappan, Journal of Indian Psychology, 1991, Vol.9, Nos. 1&2 p. 36-46.