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Sonographic assessment of changes in thickness of different abdominal fat layers in response to diet in obese women
Author(s) -
Sabir Nuran,
Pakdemirli Emre,
Sermez Yurdaer,
Zencir Mehmet,
Kazil Selcuk
Publication year - 2003
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.10129
Subject(s) - medicine , waist , body mass index , obesity , dieting , intra abdominal fat , waist–hip ratio , endocrinology , circumference , abdominal fat , abdominal obesity , zoology , nuclear medicine , weight loss , visceral fat , insulin resistance , geometry , mathematics , biology
Purpose We evaluated the potential application of sonography to monitor alterations in abdominal fat thickness in obese women before and after dieting. Methods This study included 40 obese women (mean age, 42.2 ± 9.4 years; mean body mass index [BMI], 36.0 ± 5.9 kg/m 2 ) who underwent a 3‐month low‐calorie diet. Height, weight, waist circumference (WC), and hip circumference (HC) were measured. BMI and waist‐to‐hip ratio (WHR) were calculated. Abdominal subcutaneous (S) and intra‐abdominal preperitoneal (P) fat were measured at their maximum (max) and minimum (min) thickness sites using a 7.5‐MHz linear‐array probe. Intra‐abdominal visceral (V) fat was measured using a 3.5‐MHz convex‐array probe. Measurements were taken before and after caloric restriction. Results The mean weight was reduced from 88.6 ± 17.1 kg to 83.0 ± 15.9 kg ( p < 0.0001). The mean changes in S min ( r = 0.376, p = 0.017), S max ( r = 0.508, ( p = 0.001), P min ( r = 0.439, p = 0.005), and V ( r = 0.365, p = 0.022) fat thicknesses were positively correlated with change in weight; the change in P max fat thickness showed the best and most significant correlation ( r = 0.591, p < 0.0001). BMI ( r = 0.969, p < 0.0001), WC ( r = 0.510, p = 0.001), and HC ( r = 0.422, p = 0.007) changes were also positively correlated with weight change, but the WHR change ( r = 0.019, p > 0.05) was not. Conclusions All the abdominal fat layers, particularly the intra‐abdominal P fat, will decrease in response to loss of body fat by dieting. Sonography seems to be useful in monitoring small variations in the thicknesses of abdominal S and intra‐abdominal P and V fat. © 2002 Wiley Periodicals, Inc. J Clin Ultrasound 31:26–30, 2003