Brief Assessment of Supine Heart Rate Variability in Normal Weight, Overweight, and Obese Females

Background Little research has been conducted on the heart rate variability (HRV) parameters in late adolescent females. The present study aimed to assess HRV time and frequency domain parameters in overweight and obese late adolescent females. Also to assess any possible correlation between HRV par...

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Bibliographic Details
Published in:Annals of noninvasive electrocardiology 2014-05, Vol.19 (3), p.241-246
Main Author: Alrefaie, Zienab
Format: Article
Language:English
Subjects:
Adolescent
Adult
Body Mass Index
Electrocardiography - methods
Female
females
Heart - physiopathology
Heart rate
Heart Rate - physiology
heart rate variability
Humans
Obesity
Obesity - physiopathology
Original
overweight
Overweight - physiopathology
Teenagers
Young Adult
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Summary:Background Little research has been conducted on the heart rate variability (HRV) parameters in late adolescent females. The present study aimed to assess HRV time and frequency domain parameters in overweight and obese late adolescent females. Also to assess any possible correlation between HRV parameters and obesity indices in that particular age group. Subjects and Methods Fifteen‐minute period of standardized ECG recording was implemented to record HRV time and frequency parameters in 42 normotensive euglycemic female medical students aged (18–21 years); lean (n = 13), overweight (n = 13), and obese (n = 16). For the analysis of results, 2.5‐minute data were used. Results Root mean squares of successive differences between adjacent RR intervals (rMSSD) and high‐frequency (HF) power were significantly decreased in overweight and obese late adolescent females. Parameters reflecting sympathetic activity which include low‐frequency (LF) power and LF/HF ratio showed significant increase in overweight group. Interestingly, LF power was significantly reduced in obese group while the LF/HF ratio was insignificantly different. No significant correlations were observed between HRV indices and parameters of total or visceral obesity in the study groups. Conclusion HRV indices showed sympathetic hyperactivity in overweight late adolescent females and diminished sympathetic response in matching obese group. Both overweight and obese females showed decreased protective vagal influence on the heart.
ISSN:1082-720X
1542-474X
DOI:10.1111/anec.12120