3. Methods
3.1. Design A longitudinal randomized trial was designed to evaluate and to compare the short-term and long-term effectiveness of two 12-minute relaxation interventions: 1) Revitalizer II and 2) Mozart music (Andante from Symphony #13 in F Major, K 112 and Andante from the Serenade in D Major, K 250) in lowering blood pressures. The program consists of three phases: 1) a 12-session intense training, 2) one-month, and 3) three-month follow up. A pretest and posttest design measured blood pressures during the initial 12 sessions training period, plus 1-month and 3-month follow up measurements, for a total of 28 data points was employed