Role of yoga in prehypertension and hypertension

Background: The high prevalence of hypertension in India necessitates both pharmacological and nonpharmacological measures to control it. Here, we report the findings of a study to investigate the effectiveness of yoga therapy in lowering blood pressure (BP) in prehypertensive and hypertensive individuals. Methods: This was a single center, nonrandomized controlled clinical trial, of 200 hypertensives and 100 prehypertensives patients. The control group received the prescribed antihypertensive and lifestyle modification while the yoga group was additionally taught simple yogic exercise by a trained yoga teacher. This training included intensive supervised phase 2-h training sessions in Ujjayi breathing, Bhastrika Pranayama and chanting of “Om” for 10 lessons, followed by self-performed yogic exercise at home for 1 h till the end of study at 1 year. Results: The systolic BP (SBP) in the hypertensive yoga group was significantly lower (t = 3.04, P < 0.01) than the control group at 6 months, but not so at 1 year (SBP t = 0.53, P > 0.05). In the prehypertensive participants, at 6 months (t = 5.85, P = 0.00), and 1 year (t = 6.385, P < 0.05) a significant difference was observed between SBP of the two groups However, no significant difference was observed between the diastolic BP among hypertensives or prehypertensives at 6 months and 1 year. Conclusion: Our present study indicates that yoga therapy is a viable adjunct to pharmacological intervention to reduce SBP in the management of hypertension and prehypertension and that yoga should be incorporated in the treatment regime of such patients, specifically for individuals who have prehypertension.