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European Heart Journal 2004 25(11):987-992; doi:10.1016/j.ehj.2004.03.018
Copyright © 2004 by the European Society of Cardiology.
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Clinical research

Increased left ventricular mass in obese adolescents

P Friberg*, Å Allansdotter-Johnsson, A Ambring, R Ahl, H Arheden, J Framme, Å Johansson, D Holmgren, H Wåhlander and S Mårild

Departments of Clinical Physiology, Radiology, and Paediatrics, Sahlgrenska Academy at Göteborg University, Sahlgrenska University Hospital, Queen Silvia Children's Hospital, Göteborg, Sweden
Department of Clinical Physiology, University Hospital, Lund, Sweden

* Corresponding author. Tel.: +46-31-342-1596; fax: +46-31-82-76-14
E-mail address: fribergp{at}mednet.gu.se

Received 8 October 2003; revised 8 March 2004; accepted 18 March 2004

Abstract

Aims An increase of left ventricular mass (LVM) has been reported in obese adolescents in previous studies using echocardiography. The aim of our study was to determine the extent of the increase in LVM and correlation to other risk factors using cardiac magnetic resonance imaging in obese and lean adolescents.

Methods and results Nineteen obese and 20 lean adolescents were recruited. Following resting blood pressure measurements and blood sampling for insulin, triglycerides, and cholesterol levels, all subjects underwent cardiac magnetic resonance examination to assess LVM.

LVM adjusted for body height was 16% greater in obese compared to lean adolescents (median 66 g/m, ). Obese subjects had higher resting systolic blood pressures than controls (median 115 vs. 110 mmHg, ) and higher fasting triglyceride and insulin levels. HDL-cholesterol levels were lower in the obese group compared with the lean group.

Conclusions Obese adolescents had a higher LVM than age-matched lean subjects, which correlated mainly with body mass index and systolic blood pressure. These findings add to the established cardiovascular risk profile of obese adolescents.

Key Words: Obesity • Paediatrics • Myocardium • Magnetic resonance imaging • Blood pressure


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