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Journal of Pediatric Psychology Advance Access published online on November 17, 2007
Journal of Pediatric Psychology, doi:10.1093/jpepsy/jsm108
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© The Author 2007. Published by Oxford University Press on behalf of the Society of Pediatric Psychology. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org

Lifestyle Factors, Body Mass Index, and Lipid Profile in Adolescents*

Marilyn L. Cugnetto, PhD1, Patrice G. Saab, PhD1, Maria M. Llabre, PhD1, Ronald Goldberg, MD2, Judith R. McCalla, PhD1 and Neil Schneiderman, PhD1

1Department of Psychology and 2Department of Medicine, University of Miami

All correspondence concerning this article should be addressed to Marilyn L. Cugnetto, PHD, C/O Patrice G. Saab, PHD, Department of Psychology, University of Miami, PO Box 248185, Coral Gables, Florida, FL 33124-0751, USA. E-mail: marilyn.cugnetto{at}gmail.com


  Abstract

Objective and methods A model specifying body mass index (BMI) as mediating the relationship between lifestyle factors (aerobic fitness determined by peak oxygen consumption; physical activity by 7-day physical activity recall; diet by 24 hr dietary recall), and lipid profile were tested in a sample of 205 adolescents (73% boys), who were on average at risk of overweight, aerobically unfit, and from ethnic minority groups. Results In this well-fitting model, consuming a diet low in fat and cholesterol, and being aerobically fit predicted lower BMI, which together resulted in increases in high-density lipoprotein cholesterol and decreases in triglycerides and low-density lipoprotein cholesterol. Being physically active, predicted greater aerobic fitness. Conclusions In addition to furthering understanding of the interrelationships among predisposing, major, and conditional coronary heart disease risk factors in adolescents, these data suggest that improving diet and aerobic fitness will reduce BMI and result in a better lipid profile.

Key words: adolescents; body mass index; coronary heart disease; lifestyle factors; lipid profile.

*The findings were presented at the Society of Behavioral Medicine's 26th Annual Meeting and Scientific Sessions, in Boston, Massachusetts, on April 2005, and were published as an abstract in Annals of Behavioral Medicine, 29 (2005 Supplement), page S0006.

Received December 4, 2006; revision received September 19, 2007; accepted October 14, 2007


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