Comparison of Central Fat Accumulation Indices with Body Mass Index in Women with Polycystic Ovary Syndrome.

Background: Polycystic ovary syndrome (PCOS) is an endocrinopathic disorder commonly affecting women in the reproductive age group, predisposing them to risk of metabolic syndrome. Currently, body mass index (BMI) is used as a marker to assess obesity. However, it is the central obesity which is a prevalent characteristic of PCOS which goes undetected in many women who exhibit an apparently lean PCOS. Recently, indices, such as body fat percentage (BFP), visceral adiposity index (VAI) and lipid accumulation product (LAP), have been deemed more effective, as they present formulas, anthropometric indices and biochemical measures. The aim of this study was to compare the other central fat accumulation indices-VAI, LAP and BFP with BMI in women with PCOS.

Methods: The descriptive type of cross-sectional study was conducted in a tertiary care hospital which included 110 women, aged 18-40 year fulfilling the Rotterdam criteria for diagnosis of polycystic ovary syndrome. Height, weight and lipid profile were measured, and BMI, LAP and VAI were calculated. Body fat percentage was measured by the body fat analyser using the bioelectrical impedance method. All indices were then compared.

Results: BMI showed a significant positive correlation with BFP (r = 0.68). VAI and LAP showed significant correlation with each other (p < 0.05). LAP and VAI were found to weakly correlate with BFP. However, lean PCOS also had higher values of visceral adiposity indices and hence did not show strong correlation.

Conclusion: Central fat accumulation indices should be integral in assessing body fat distribution. BFP, VAI and LAP assess fat distribution and function both and, hence, present complete information at low cost.