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Mil Med. 2008 Jan;173(1):67-73.

Obesity classification in military personnel: a comparison of body fat, waist circumference, and body mass index measurements.

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  • 1Department of Public Health Sciences, University of Hawaii at Manoa, 1960 East-West Road, Biomed D104B, Honolulu, HI 96822, USA.

Abstract

OBJECTIVE:

The purpose of this study was to evaluate obesity classifications from body fat percentage (BF%), body mass index (BMI), and waist circumference (WC).

METHODS:

A total of 451 overweight/obese active duty military personnel completed all three assessments.

RESULTS:

Most were obese (men, 81%; women, 98%) using National Institutes of Health (NIH) BF% standards (men, >25%; women, >30%). Using the higher World Health Organization (WHO) BF >35% standard, 86% of women were obese. BMI (55.5% and 51.4%) and WC (21.4% and 31.9%) obesity rates were substantially lower for men and women, respectively (p < 0.05). BMI/WC were accurate discriminators for BF% obesity (theta for all comparisons >0.75, p < 0.001). Optimal cutoff points were lower than NIH/WHO standards; WC = 100 cm and BMI = 29 maximized sensitivity and specificity for men, and WC = 79 cm and BMI = 25.5 (NIH) or WC = 83 cm and BMI = 26 (WHO) maximized sensitivity and specificity for women.

CONCLUSIONS:

Both WC and BMI measures had high rates of false negatives compared to BF%. However, at a population level, WC/BMI are useful obesity measures, demonstrating fair-to-high discriminatory power.

PMID:
18251334
[PubMed - indexed for MEDLINE]
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