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Varghese, Anjaly Mary
- A Comparative Study of Cardiovascular Autonomic Function Tests in Yoga Practitioners and Controls
Authors
1 Assistant Professor, Department of Physiology and Department of Pharmacology, Santhiram Medical College and General Hospital, NH -18, Nandyal, Andhra Pradesh, IN
2 Associate Professor, Department of Physiology, KMCT Medical College and Hospital, Manassery, P.O, Mukkam, Kozhikode, Kearla, IN
Source
International Journal of Physiology, Vol 1, No 2 (2013), Pagination: 135-139Abstract
Background: In the present age, a great emphasis is being laid on the practice of yogic postures as a form of highly effective physical exercise for keeping the body healthy and also for the control of disease process. Rhythmic breathing controls the mind, lungs and heart which are located in the thoracic cage and are under the control of autonomic nervous system. The aim of this study was to evaluate the cardiovascular autonomic function tests among yoga practitioners.
Method: 75 healthy volunteers (aged 18-31 years)were divided in to three groups; the first two yoga groups ( each group ,n=25 ) consisted of subjects who were practicing the yoga (pranayama and suryanamaskarams) for less than 2 years and more than 2 years, respectively and the third group was controls (n=25). Autonomic function tests were performed for both sympathetic and parasympathetic activity ,which include deep breathing test, valsalva maneuver, heart rate response to standing posture (30:15 ratio) , orthostatic hypotension test and sustained hand grip test.
Results: The statistics showed a significant value for heart rate variability , 30:15 ratio ,hand grip test, othrostatic hypotension test and valsalva ratio in group 1 and 2 yoga practitioners (p<0.05) than in controls. But no significant difference observed in terms of resting heart rate in all groups. The overall ewing's autonomic dysfunction score was high in controls compared to yoga practicing subjects ((p<0.05).
Conclusion: It is evident that yoga develops an ability to control cardiovascular autonomic functions and would prepare the body to overcome stress by modulating and optimizing sympathetic activities.
Keywords
Yoga, Cardiac Autonomic Tests, Heart Rate, Deep Breathing Test
References
- Godoy DV, Bringhenti RL, Severa A, Gasperi R, PoliLV. Ioga versus atividade aerobia: efeitos sobre provasespirometricas e pressao inspiratoria maxima. JBrasPneumol 2006; 32(2):130-5.
- Chanavirut R, Khaidjapho K, Jaree P, PongnaratornP. Yoga exercise increases chest wall expansion and lung volumes in young healthy thais. Thai J PhysiolSci 2006;19(1):1-7.
- K K, Gharote MS. Yoga for your heart 1985; 3rd edition Mumbai ; pg:11- 15.
- Sparrow L. Hugh Lauter Levin A Yoga journal book 2004: Westport; pg:3
- Swami sathyananda saraswati. Yoga for children 2006; 4th edition Bihar; pg:20-26.
- Vempati RP, Telles S. Yoga-based guided relaxation reduces sympathetic activity judged from baseline levels Psycho. Rep, 2002; 90: 487- 494.
- Wenger M.A. and Bagchi B.K. Studies of autonomic functions in practitioners of yoga in India. Behavioral science,1961; 312-23.
- Ewing DJ, Clarke BF. Diagnosis and management of diabetic autonomic neuropathy. British Medical Journal,1982 ; 285: 916-18.
- Ewing JD, Martyn CN, Young RJ, Clarke BF. The value of cardiovascular autonomic function tests: 10 years experience in diabetes. Diabetes Care, 1985 ; 8 (5): 491-498.
- Telles S, Joshi M, Dash M, Raguraj P, Naveen K, and Nagendra H. An evaluation of the ability to voluntarily reduce the heart rate after a month of yoga practice. Integral physiological and behavioural science 2004; 39(2):119- 125.
- Pratima M. Bhutkar, Milind V. Bhutkar, Govind B.Taware,Vinayak Doijad.Effect of suryanamaskar on cardio- respiratory fitness parameters. Al Ameen J Med Science 2008; 1(2): 126-29.
- Udupa KN, Singh H, Settiwar RM. Physiological and biochemical studies on the effect of yogic and certain other exercises. Indian J Med Res 1975; 63:620-24.
- Harinath K. Malhotra AS, Pal K, Prasad R, Kumar R, Kain TC, Rai L, Sawhney RC. Effect of Hatha Yoga and Omkar Meditation on cardio respiratoy performance, Psychologic Profile and Melatonin on cardio respiratory performance, Psychologic Profile and Melatonin Secretio. J.Altern Complement Med 2004 ; 10(2): 261- 268.
- Katona PG, Jih F. Respiratory sinus arrhythmia: noninvasive measure of parasympathetic cardiac control. J Appl Physiol 1975;39:801-5.
- Ulla Frey Schuss. Elicitation of heart rate and blood pressure increase on muscle contraction. Journal of applied physiology 1970;28(6): 758-760.
- Ewing DJ. Cardiovascular reflexes and autonomic neuropathy. Clinical Science and molecular Medicine 1978; 55: 321-27.
- Vijayalakshmi P, Madan Mohan, Bhavanani AB, Asmita Patil, Kumar Babu P.Modulation of stress induced by isometric hand grip test in hypertensive patients following yogic relaxation training. Indian J Physiol Pharmacol 2004; 48(1): 59-60.
- Bagchi BK; Wenger MA; Studies of autonomic functions in practitioners of yoga in India. Behavioural science, 1961; 312-323.
- K.Joshi. Effect of savasana on cardiovascular parameters on young volunteers. IJPP; 2004; 43(1)
- Gharote ML; Effect of yogic training on physical fitness. Yoga mimansa; 1973; 15: 31-35
- Winder WW, Hagber JM, Hickson RC. Time course of sympathoadrenal adaptation to endurance exercise training in man. J Appl Physiol 1978; 45(3): 370-374.