Waist circumference, blood pressure, and lipid components of the metabolic syndrome.
OBJECTIVE
To examine whether waist circumference (WC) predicts blood pressure (BP) and lipid components of the metabolic syndrome independent of body mass index (BMI) percentile in youths.


METHODS
The study group comprised 70 African-American youths and 97 Caucasian youths. Outcome measures included BP, lipid profile, and abdominal adipose tissue (AT).


RESULTS
Both BMI percentile and WC were significantly (P < .05) associated with daytime and nighttime systolic and diastolic BP, triglycerides (TG), high-density lipoprotein (HDL), and TG/HDL ratio independent of race. In African-Americans and Caucasians, WC remained a significant (P < .05) correlate of daytime (r = .50 and .59, respectively) and nighttime (r = .49 and .62, respectively) systolic BP, and in Caucasians, TG, HDL, TG/HDL, and very-low-density lipoprotein after controlling for BMI percentile. After accounting for age, sex, and race, the addition of WC to BMI percentile increased the variance (R(2)) in systolic BP by 15% (P < .05). The inclusion of WC with BMI percentile explained an additional 3% and 7% of the variance in TG and HDL, respectively (P < .05).


CONCLUSIONS
The prediction of childhood obesity-related health risks is significantly improved by the inclusion of WC in addition to BMI percentile. This observation supports the notion that WC should be included in the evaluation of childhood obesity along with BMI percentile to identify those at increased health risks due to excess abdominal fat.
Lee
SoJung
S
Weight Management & Wellness Center and Division of Pediatric Endocrinology, Metabolism and Diabetes Mellitus, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
Bacha
Fida
F
Arslanian
Silva A
SA
D050153:Abdominal Fat; D000293:Adolescent; D001794:Blood Pressure; D001837:Body Weights and Measures; D002648:Child; D005260:Female; D006801:Humans; D008075:Lipoproteins, HDL / Q000097:blood; D008297:Male; D024821:Metabolic Syndrome / Q000097:blood* / Q000503:physiopathology*; D014280:Triglycerides / Q000097:blood
D008075:Lipoproteins, HDL; D014280:Triglycerides