International Journal of Yoga
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ORIGINAL ARTICLE Table of Contents   
Year : 2018  |  Volume : 11  |  Issue : 1  |  Page : 37-43
Yoga offers cardiovascular protection in early postmenopausal women

1 Department of Physiology, Lady Hardinge Medical College, New Delhi, India
2 Department of Biochemistry, Lady Hardinge Medical College, New Delhi, India
3 Department of Obstetrics and Gynecology, Lady Hardinge Medical College, New Delhi, India

Correspondence Address:
Sinha M Praveena
F-4, Medha Apartments, Mayur Vihar, Phase-1, Extn., New Delhi - 110 091
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijoy.IJOY_69_16

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Context: Postmenopause, an estrogen deficient state comes with increased incidence of cardiovascular diseases (CVDs). Yoga has been described as having a beneficial effect on heart rate variability (HRV), a marker for cardiac autonomic activity which can assess cardiovascular risk, in various populations. Aim: the aim of the study was to study the effect of 3-month long Yoga practice on HRV in early postmenopausal women. Settings and Design: A prospective longitudinal study of 67 women within 5 years of menopause between 45 and 60 years of age attending menopause clinic of Department of Gynaecology, Sucheta Kriplani Hospital fulfilling inclusion and exclusion criteria and consenting were enrolled for the study. Subjects and Methods: HRV of 37 cases (Yoga group) and 30 controls (non-Yoga group) was recorded pre and 3-month postintervention. Statistical Analysis Used: GraphPad Prism Version 5 software was used. Values are a mean and standard error of mean. Statistical significance was set up at P < 0.05. Results: In HRV, frequency domain analysis showed a significant fall in low frequency (LF) in normalized units (nu) and LF: high frequency (HF) ratio and significant rise in HF in nu in the Yoga group (depicting parasympathetic dominance) against a significant rise in LF (nu) and LF: HF ratio and significant fall in HF (nu) in non-Yoga group (indicating sympathetic dominance). Time domain analysis showed a significant decrease in Standard Deviation of NN intervals in Non-Yoga group against nonsignificant changes in Yoga group indicating deterioration in parasympathetic activity in non-Yoga group. Conclusions: Three-month long Yoga practice improved HRV in early postmenopausal women significantly and has the potential to attenuate the CVD risk in postmenopausal women.

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