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COMPARISON OF CARDIAC AUTONOMIC ACTIVITY AND BMI IN DIFFERENT PHASES OF MENSTRUAL CYCLE USING HEART RATE VARIABILITY

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Author(s): sheila R Pai | Sneha B Shetty | Nayanatara A K | Balachandra A. Shetty

Journal: International Journal of Biomedical and Advance Research
ISSN 2229-3809

Volume: 2;
Issue: 10;
Start page: 402;
Date: 2011;
Original page

Keywords: Heart rate variability | body mass index | LF/HF ratio

ABSTRACT
The aim of this experiment was to compare the cardiac autonomic activity and BMI in the different phases of menstrual cycle using Heart rate variability. Heart rate variability (HRV) in women has been related independently to endogenous sex hormones, hormone replacement therapy, menopause, menstrual cycle, body mass index (BMI), and physical conditioning .It has become a popular non invasive tool for assessing the activities of autonomic nervous system. The aim of this experiment was to compare the cardiac autonomic activity and BMI in the different phases of menstrual cycle using Heart rate variabilityA total of 54 female students  were  selected. The selected students were divided into two Group I (BMI < 20) and Group II (BMI >20) the ECG recording   were taken  during  the   3 phases of menstrual  cycle. The analog ECG signal were conveyed through an A/D converter to PC and were analyzed .The frequency domain analysis was done in which the LF,HF  and LF/HF components were studied. In  group II (BMI>20)) there was a significant increase in the LF/HF ratio in the luteal phase of menstrual cycle when compared to other phases of the menstrual cycle. In group I (BMI < 20) there was no statistically significant difference in LF/HF ratio in the three phases .Woman  between  16-25  years  having  less  BMI  had  more  parasympathetic  activity  than those  with  greater  BMI.  In women   with greater BMI cardiac autonomic activity   had a predominant sympathetic profile.

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