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Background: As we know acoustics is defined as the science that deals with the production, control, transmission, reception, and effects of sound. As the person practices with Bhramari pranayama and the Om Chanting, humming sound is generated. Paper describes the beneficial effect of this sound to the adult human being. Younger adults having high blood pressure are at increased risk of cardiovascular disease and have a poor quality of life. In Bhramari pranayama and om chanting meditation, acoustic vibrations are produced by our own vocal chords that can regulate various physiological functions of the human body. However, the effect of these yogic practices in younger adults at risk of cardiovascular disease remains unclear. Objective: To study the effects of the 2-week practice of Bhramari pranayama and Om chanting meditation on blood pressure and quality of life in adults with pre-hypertension or hypertension (HTN). Design and Methods: This prospective, single arm, yoga-based lifestyle intervention study was conducted in 141 individuals with pre-HTN [systolic blood pressure (SBP)/diastolic blood pressure (DBP) 130-139/85-89mm Hg] or previously diagnosed HTN [SBP/DBP130-139/85-89mm Hg]. The participants underwent practice of pre-tested yogic intervention including yogasanas (40 min/day), Bhramari pranayama (5 min/day) and OM chanting meditation (10 min/day) for the duration of 1 hr for the period of 2 weeks under the supervision of yoga therapist. Outcome measures included SBP, DBP, heart rate and quality of life, assessed at baseline and 2 weeks of intervention. Results: The mean age of participants was 39.1± 5.0yrs and mean SBP/DBP was 134.9± 11.7/85.4± 9.3 mm of Hg. After the intervention, there was a significant reduction in SBP, DBP, heart rate and a significant increase in self-perceived quality of life and health (p<0.05). Conclusion: The acoustical sound generated in the chanting of Bhramari Pranayam and Om chanting is beneficial to the human being. The study shows yoga intervention including Bhramari pranayama and Om chanting meditation is effective in reducing the risk of cardiovascular disease through the reduction in blood pressure, thereby improving the quality of life in adults with pre- HTN or HTN.
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