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Linder, K. ; Springer, F.* ; Machann, J. ; Schick, F. ; Fritsche, A. ; Häring, H.-U. ; Blumenstock, G.* ; Ranke, M.B.* ; Stefan, N. ; Binder, G.* ; Ehehalt, S.*

Relationships of body composition and liver fat content with insulin resistance in obesity-matched adolescents and adults.

Obesity 13, 733-748 (2014)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
Objective: While in adults not total body- or visceral fat mass, but liver fat content was found to independently determine insulin resistance, it is unclear whether these relationships are already present in obese adolescents. Design and Methods: 39 overweight/ obese adolescents were matched for sex and BMI with 39 adults. To compare the age- and sex-specific BMI values of adolescents and adults, the percentile value of each adolescent was projected to the age of 18. Body fat depots were quantified by whole-body magnetic resonance (MR) imaging. Liver fat content was measured with (1) H-MR spectroscopy. Insulin resistance was estimated from the homeostasis model assessment of insulin resistance (HOMA-IR). Results: Compared to overweight and obese adults, adolescents had higher HOMA-IR (p<0.001) and lower lean body mass (p=0.002). Furthermore, they had higher total body- (p=0.02), but lower visceral- (p<0.001) fat mass, while liver fat content was not significantly different between the groups (p=0.16). In both groups liver fat content (both p≤0.007), but not total body- or visceral fat mass (all p≥0.64) was an independent predictor of insulin resistance. Conclusions: Having lower visceral fat mass, overweight and obese adolescents are more insulin resistant than sex- and BMI-matched adults. Liver fat content, but not total body- or visceral fat mass, is an independent determinant of insulin resistance in adolescents.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Body Composition ; Insulin Resistance ; Liver Fat; Hepatic Steatosis; Metabolically Benign; Pubertal Changes; Mass Index; Children; Glucose; Homeostasis; Prevalence; Disease; Sensitivity
ISSN (print) / ISBN 1930-7381
e-ISSN 1930-739X
Journal Obesity
Quellenangaben Volume: 13, Issue: 5, Pages: 733-748 Article Number: , Supplement: ,
Publisher Wiley
Publishing Place Hoboken
Reviewing status Peer reviewed
Institute(s) Institute of Diabetes Research and Metabolic Diseases (IDM)
German Center for Diabetes Reseach (DZD)