Mal J Nutr 22(2): 183 - 189, 2016

Comparison of Waist Circumference Measured at Four Sites in Healthy Iranian Adults
Razieh Sarli & Zahra Vahdat Shariatpanahi*

Department of Clinical Nutrition,National Nutrition and Food Technology Research Institute, Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran


ABSTRACT

Introduction: The waist circumference (WC) is a measure of central obesity in adults. The aim of this study was to compare waist circumference measured at four sites among Iranian adults. Methods: A total of 494 Iranian adults attending a university hospital for routine health examination volunteered for the study. WC measurements were taken at the superior border of the iliac crest, midpoint between the iliac crest and the lowest rib, at the umbilicus and minimal waist. Simultaneously, suprailiac (SSF) and triceps skinfold (TSF) thicknesses were measured to determine correlations with the WC measurements. Results: In both sexes, the highest mean values for WC were taken above the iliac crest, while the lowest mean values were at minimal waist. In women, mean WC from the four sites were significantly different. For men with BMI<30 kg/m2, WC from minimal waist and midpoint between the iliac crest and the lowest rib differed significantly from WC from the other sites, while those with BMI=30 kg/m2, only WC from minimal waist differed significantly from WC taken at other sites. WC measured at the superior border of the iliac crest showed significance with triceps and suprailiac subcutaneous fat. Conclusions: Among Iranian adults, the WC value differs depending on the site measured. Correlations with other indicators of body fatness are recommended for an objective assessment of obesity.

Keywords: Body mass index, skinfold thickness, waist circumference

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