Medical College of Wisconsin
CTSICores SearchResearch InformaticsREDCap

Relationship between body fat and BMI in a US hispanic population-based cohort study: Results from HCHS/SOL. Obesity (Silver Spring) 2016 Jul;24(7):1561-71

Date

05/18/2016

Pubmed ID

27184359

Pubmed Central ID

PMC4925254

DOI

10.1002/oby.21495

Scopus ID

2-s2.0-84976615233 (requires institutional sign-in at Scopus site)   19 Citations

Abstract

OBJECTIVE: To evaluate the percentage of body fat (%BF)-BMI relationship, identify %BF levels corresponding to adult BMI cut points, and examine %BF-BMI agreement in a diverse Hispanic/Latino population.

METHODS: %BF by bioelectrical impedance analysis was corrected against %BF by (18) O dilution in 434 participants of the ancillary Hispanic Community Health Study/Study of Latinos. Corrected %BF was regressed against 1/BMI in the parent study (n = 15,261), fitting models for each age group, by sex, and Hispanic/Latino background; predicted %BF was then computed for each BMI cut point.

RESULTS: Bioelectrical impedance analysis underestimated %BF by 8.7 ± 0.3% in women and 4.6 ± 0.3% in men (P < 0.0001). The %BF-BMI relationship was nonlinear and linear for 1/BMI. Sex- and age-specific regression parameters between %BF and 1/BMI were consistent across Hispanic/Latino backgrounds (P > 0.05). The precision of the %BF-1/BMI association weakened with increasing age in men but not women. The proportion of participants classified as nonobese by BMI but as having obesity by %BF was generally higher among women and older adults (16.4% in women vs. 12.0% in men aged 50-74 years).

CONCLUSIONS: %BF was linearly related to 1/BMI with consistent relationship across Hispanic/Latino backgrounds. BMI cut points consistently underestimated the proportion of Hispanics/Latinos with excess adiposity.

Author List

Wong WW, Strizich G, Heo M, Heymsfield SB, Himes JH, Rock CL, Gellman MD, Siega-Riz AM, Sotres-Alvarez D, Davis SM, Arredondo EM, Van Horn L, Wylie-Rosett J, Sanchez-Johnsen L, Kaplan RC, Mossavar-Rahmani Y

Author

Lisa Sanchez-Johnsen PhD Center Associate Director, Professor in the Institute for Health and Equity department at Medical College of Wisconsin




MESH terms used to index this publication - Major topics in bold

Adipose Tissue
Adult
Age Factors
Body Mass Index
Cohort Studies
Female
Humans
Male
Middle Aged
Obesity
Regression Analysis
Risk Factors
Sex Factors
United States