Results of an 8-week study of 149 individuals with high blood pressure showed that, when the individuals practiced slow breathing with a regulating device, their blood pressure fell. These findings were reported in the Journal of Clinical Hypertension (October 2004). The device, RESPeRATE, is the size of a paperback book and is hooked up to an elastic belt placed around the chest. RESPeRATE monitors the breathing rate of the individual, calculates the preferred rate, and "synthesizes a personalized melody comprised of 2 distinct tonesone for inhalation and one for exhalation,"which is played through headphones.
For the study, the participants were randomly assigned to use the device or to simply monitor their blood pressure at home. The study found that individuals who used RESPeRATE for at least 180 minutes over the study's duration experienced an average drop of 15 points in the systolic blood pressure reading. Participants who used the device for <180 minutes witnessed a 7-point drop in systolic pressure. Participants only monitoring their blood pressure at home showed a 9-point decrease in systolic pressure.