Effect Of 12 Weeks Yoga Training And 12 Weeks Detraining on Blood Pressure Subjects with Hypertension

Background: Hypertension, an early predictor of cardiovascular disease can be prevented by healthy lifestyle modification. Stress-induced disorders such as hypertension can be effectively managed with the holistic science of yoga. Objective: In hypertensive individuals who are receiving routine treatment, we investigated the effects of yoga training for 12 weeks and compare as well as analyze these parameters at the end of yoga training (12th week) and after 12 weeks of follow-up with hypertensive on regular treatment (non-yoga group). Materials and methods: The study involved randomly assigned 124 hypertensive subjects to either experimental or control groups where N=65, and the yoga groups where n=61 between age of 25 to 45 years were included. In both the yoga group and the control group, heart rates (HR), Systolic Blood Pressures (SBP), Diastolic Blood Pressures (DBP), Pulse Pressures (PP), Mean Arterial Pressures (MAPs), and mean arterial pressure products were recorded before, after, and during the study period. Results: The means of RPP, HR, PP, SBP, MAP and DBP of pre-post, and follow-up values of the control group were compared by RM ANOVA and also there was no significant difference were found that exists among the groups. The mean values in the test group of post-training and follow-up show a significant decrease when compared with pre-training values. There are a significant decrease in test group follow-up values and post-training compared with follow-up values of control group and post-training respectively. In test group follow-up values the significant increase is found when compared with the test group post-training. Conclusion: Yoga reduced HR, SBP, DBP, PP, MAP, and RPP in essential hypertension under resting conditions. Reduced Sympathetic Activity, Enhanced Vagal Modulation and the increased sensitivity of baroreflex might be responsible for the harmonization of autonomic cardiovascular rhythms. Detraining from yoga, on the other hand, did not result in an increase in blood pressure. In conclusion, the present study shows that regular practice in yoga is helpful in reducing the hypertension, and that deep rest keeps the body healthy.

Effect Of 12 Weeks Yoga Training And 12 Weeks Detraining on Heart Rate Variability on Subjects with Hypertension

Background: Healthy lifestyle modifications can prevent hypertension, an early predictor of cardiovascular disease. Yoga is an effective way to manage stress-induced disorders, such as hypertension. Objective: This study investigated the effects of yoga training on hypertensive individuals receiving routine treatment over a 12-week period, comparing and analyzing heart rate variability (HRV) parameters at and after the 12-week yoga training period (the 12th week) with hypertensives receiving routine treatment (the non-yoga group). Materials and methods: A total of 132 hypertensive subjects between the ages of 25 and 45 were randomly assigned to control or experimental groups (N=66), and 66 of these subjects were exposed to yoga therapy (N=66). Before, after, and during the study period, HRV parameters were obtained. Results: RM ANOVA was used to compare time domain and frequency domain parameters of HRV of the control group at pre, post, and detrain, and it was found that no significant difference existed between the groups. Test group mean values show a significant increase in time domain parameters compared with pre-training values after training. Test group post-training and detrain values significantly increased when compared to control group post-training and detrain values. Test group detrain values decreased significantly from post-training to test group detrain values. Conclusion: Yoga therapy increases the HRV values in essential hypertension at rest. An increase in vagal modulation, a reduction in sympathetic activity, and an increase in baroreflex sensitivity may be responsible for the harmonization of autonomic cardiovascular rhythms. The results of detraining from yoga did not result in an increase in HRV. As a result, the present study shows that regular yoga practice reduces hypertension, and deep rest keeps the body healthy.

Immediate effect of chandra nadi pranayama (left unilateral forced nostril breathing) on cardiovascular parameters in hypertensive patients

Introduction : Recent studies have reported differential physiological and psychological effects produced by exclusive right and left nostril breathing and clinical research is required to prove immediate and sustained efficacy of these techniques in various psychosomatic conditions such as hypertension (HT). The present study was designed to determine immediate effects of 27 rounds of exclusive left nostril breathing, a yogic pranayama technique known as chandra nadi pranayama (CNP) on cardiovascular parameters in patients of essential HT. Materials and Methods : Twenty two patients of essential HT under regular standard medical management were individually taught to perform CNP by a qualified yoga instructor with a regularity of 6 breaths/min throughout a performance of 27 rounds of CNP. Pre and post intervention heart rate (HR) and blood pressure (BP) measurements were recorded using non-invasive semi-automatic BP monitor and Students t test for paired data used to determine significant differences. Results : Twenty seven rounds of CNP produced an immediate decrease in all the measured cardiovascular parameters with the decrease in HR, systolic pressure (SP), pulse pressure, rate-pressure product and double product being statistically significant. Further, gender-based sub-analysis of our data revealed that our male participants evidenced significant reductions in HR and SP with an insignificant decrease in diastolic pressure, while in female participants only HR decreased significantly with an insignificant decrease in SP. Discussion and Conclusion : It is concluded that CNP is effective in reducing HR and SP in hypertensive patients on regular standard medical management. To the best of our knowledge, there are no previously published reports on immediate effects of left UFNB in patients of HT and ours is the first to report on this beneficial clinical effect. This may be due to a normalization of autonomic cardiovascular rhythms with increased vagal modulation and/or decreased sympathetic activity along with improvement in baroreflex sensitivity. Further studies are required to enable a deeper understanding of the mechanisms involved as well as determine how long such a BP lowering effect persists. We recommend that this simple and cost effective technique be added to the regular management protocol of HT and utilized when immediate reduction of BP is required in day-to-day as well as clinical situations