ACUTE EFFECT OF SLOW ABDOMINAL BREATHING ON HEART RATE VARIABILITY IN PRE-HYPERTENSIVE

Nimish Jindal, Saxena Yogesh

Abstract


The study observes the effect of slow abdominal breathing on blood pressure (BP) and relate these changes to Heart Rate Variability (HRV) in
prehypertensives.22 self- controlled prehypertensive volunteers were subjected to intervention of slow abdominal breathing @ of 6 breaths/min
and record the ECG using standardized procedure for HRV analysis along with the systolic (SBP) and diasolic (DBP)blood pressure during their
pre intervention period[@ of 20 breaths/min] ,the intervention period & post intervention period [@ of 20 breaths/min] . Recorded data in three
stages were analysed using paired “t” test and Pearson test for correlation with a “p” value of <0.05 as level of significance. The study observed a
marked decrease in mean SBP & DBP (P =0.001) in addition to significant decrease in mean sympathetic activity (L.F.) & increase in
parasympathetic activity( H.F) (P value <0.05) during slow abdominal breathing @ 6 breaths/min from the pre intervention period @ 20 breaths
/min in pre hypertensives subjects . Later on increasing the breathing rate to @ 20 breaths /min from 6 breaths/min showed a significant reversal of
the values of HRV parameters, SBP and DBP in the period of post intervention. Negative though non-significant relation was observed between
blood pressure reduction and change in vagal tone (HF). Slow abdominal breathing at 6 breath /min acutely decreases the SBP and DBP in
prehypertensive which may be due to increase in the vagal tone[HF] with decreases in the excitability in sympathetic system[LF,LF/HF]


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References


Chobanian AV, Bakris GL, Black HR, et al. Seventh report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure. Hypertension Indian J Med Res. 2003; 42(6):1206-52.

Lewington S, Clarke R, Qizilbash N,et al; Prospective Studies Collaboration. Age-specific relevance of usual blood pressure to vascular mortality: a meta analysis of individual data for one million adults in 61 prospective studies [published erratum appears in Lancet 2003;361(9362):1060

Vasan RS, Larson MG, Leip EP,et al. Assessment of frequency of progression to hypertension in non-hypertensive participants in the Framingham Heart Study: a cohort study. Lancet 2001; 358:1682-6.

Doğru MT, Simşek V, Sahin O, et al. Differences in autonomic activity in individuals with optimal, normal, and high-normal blood pressure levels. Turk Kardiyol Dern Ars. 2010; Spine 2008;38(3):182-8

Pal GK, Adithan C, Dutta TK, et al. Assessment of sympathovagal imbalance by spectral analysis of heart rate variability in prehypertensive and hypertensive patients in Indian population; Clin Experiment Hypertens 2011, 33(7):478– 483

Pal GK, Pal P, Nivedita N, Lalitha V, et al: Sympathovagal imbalance in young prehypertensives: importance of male–female difference; Am J Med Sci 2012, , 33(7):478– 483

Current perspectives on the use of meditation to reduce blood pressure. Goldstein CM, Josephson R, Xie S, Hughes JW. Int J Hypertens. 2012 Mar 5 :128(6): 712-20

Lifestyle modifications to prevent and control hypertension. Recommendations on stress management. Canadian Hypertension Society, Canadian Coalition for High Blood Pressure Prevention and Control, Laboratory Centre for Disease Control at Health Canada Heart and Stroke Foundation of Canada. Spence JD, Barnett PA, Linden W, Ramsden V, Taenzer P. CMAJ. 1999 May 4;160(9 Suppl):S46-50.

Patel C, Marmot MG, Terry DJ, et al. Trial of relaxation in reducing coronary risk: four year follow up. Br Med J (Clin Res Ed) 1985;290:1103–6

Funderburk, J. (1977) Science Studies Yoga. A review of physiological data, Illinois, USA: Himalayan International Institute of Yoga Science & Philosophy

Joseph CN, Porta C, Casucci G, et al. Slow breathing improves arterial baroreflex sensitivity and decreases blood pressure in essential hypertension. Hypertension. 2005; 46: 714-8.

Grossman E, Grossman A, Schein MH, et al. Breathing control lowers blood pressure. J Hum Hypertens. 2001; 15: 263-9.

Shu-Zhen Wang, Sha Li, Xiao-Yang Xu, Gui-Ping Lin, Li Shao, Yan Zhao, and Ting Huai Wang.Effect of Slow Abdominal Breathing Combined with Biofeedback on Blood Pressure and Heart Rate Variability in Prehypertension. Journal Of Alternative And Complementary Medicine 2010 ( 16):1039–1045.

De Troyer A, Boriek AM. Mechanics of the respiratory muscles. Compr Physiol 2011; 1: 1273–1300.

Manios E, Tsivgoulis G, Koroboki E, et al. Impact of prehypertension on common carotid artery intima-media thickness and left ventricular mass. Stroke 2009; 4:1515–1518.

Pinheiro CH, Medeiros RA, Pinheiro DG, MarinhoMde J. Spontaneous respiratory modulation improves cardiovascular control in essential hypertension. [Article in English, Portuguese], Laboratório de Cardiopneumologia e Fisiologia do Exercício, Escola de SaúdePública do Estado do Ceará, Universidade de Fortaleza, Fortaleza, CE, Brasil. 2007 Jun; 88(6):651-9

Meles E, Giannattasio C, Failla M, Gentile G, Capra A, ManciaG. Non-pharmacologic treatment of hypertension by respiratory exercise in the home setting. Dipartimento di MedicinaClinica, Gerardo Hospital Monza, Italy. 2004 Apr; 17(4):370-41

Kaushik RM, Kaushik R, Mahajan SK, Rajesh V. Effects of mental relaxation and slow breathing in essential hypertension. Department of Medicine, Himalayan Institute of Medical Sciences, Swami Rama Nagar, P.O. Doiwala, Dehradun 248140, Uttaranchal, 2006 Jun;14(2):120-6. Epub 2006 Jan 10

Bhavanani AB, Sanjay Z, Madanmohan. Immediate effect of sukha pranayama on cardiovascular variables in patients of hypertension, Jawaharlal Institute of Postgraduate Medical Education & Research, the Advanced Centre for Yoga Therapy, Education and Research, Puducherry, India. 2011; (21):73-6.

Altena MR, Kleefstra N, Logtenberg SJ, et al. Effect of device-guided breathing exercises on blood pressure in patients with hypertension. Blood Press 2009 Sep 10:1–7.[Epub ahead of print]

Joseph CN, Porta C, Casucci G, et al. Slow breathing improves arterial baroreflex sensitivity and decreases blood pressure in essential hypertension. Hypertension 2005;4:714–718

Bernardi L, Gabutti A, Porta C,et al. Slow breathing reduces chemoreflex response to hypoxia and hypercapnia, and increases baroreflex sensitivity. J Hypertens 2001;12: 2221–2229.

Mourya M, Mahajan AS, Singh NP, Jain AK. Effect of slow- and fast-breathing exercises on autonomic functions in patients with essential hypertension. . Department of Physiology, Maulana Azad Medical College, New Delhi, India. 2009 Jul; 15(7):711-7.

Madsen LB, Rasmussen JK, Møller DS,et al. Heart rate variability in white-coat hypertension. Department of Medical Research, Holstebro Hospital and Aarhus University, Aarhus, Denmark. 2008 Apr;13(2):65-71


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