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Cardiac Autonomic Response to Saturated Fatty Meal in Overweight and Obese Young Females
Author(s) -
Alrefaie Zienab
Publication year - 2013
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.27.1_supplement.lb832
Subject(s) - overweight , heart rate variability , medicine , obesity , endocrinology , body mass index , waist , heart rate , meal , cardiology , blood pressure
The present study aimed to assess the effect of saturated fatty meal on heart rate variability (HRV) in overweight and obese young females. 42 (18–23 years old) female volunteer students were included into the study. On 7th day of menstrual cycle, participants had high fat milkshakes at 8 a.m., 3 hours preceding HRV assessment. HRV indices included; standard deviation of all R‐R intervals (SDRR), root mean squares of successive differences between R‐R intervals (rMSSD), very low frequency waves (VLF), low frequency waves (LF), high frequency waves (HF). LF/HF ratio was calculated. The rMSSD and HF waves were significantly decreased in overweight and obese groups when compared to control group (P< 0.01, P< 0.001) and (P<0.001, P< 0.001) respectively. The LF waves showed significant increase in overweight group (P<0.001) and significant decrease in obese group (P<0.05). The LF/HF ratio was significantly increased in the overweight group (P<0.001), and insignificantly different in the obese group. No significant correlations were found between body mass index, waist hip ratio and HRV parameters. The present study revealed loss of protective vagal influence on heart rate in overweight and obese young females. Interestingly, the present study showed a blunted sympathetic response to saturated fatty meal in obese young females, while in the overweight group, sympathetic hyperactivity was observed.