Randomised controlled trial of yoga and bio-feedback in management of hypertension

Thirty-four patients with hypertension were randomly assigned either to a six-week training period of yoga relaxation methods with biofeedback or to a placebo therapy of general relaxation. There was a highly significant difference in reduction in blood pressure in the yoga group (168/100 to 141/84) as compared with the control group (169/101 to 160/96). The control group was then trained in yoga relaxation and their blood pressure then fell to that of the yoga group.