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Relationship between body fat and BMI in a US hispanic population-based cohort study: Results from HCHS/SOL.

TitleRelationship between body fat and BMI in a US hispanic population-based cohort study: Results from HCHS/SOL.
Publication TypePublication
Year2016
AuthorsWong WW, Strizich G, Heo M, Heymsfield SB, Himes JH, Rock CL, Gellman MD, Siega-Riz AMaria, Sotres-Alvarez D, Davis SM, Arredondo EM, Van Horn L, Wylie-Rosett J, Sanchez-Johnsen L, Kaplan RC, Mossavar-Rahmani Y
JournalObesity (Silver Spring)
Volume24
Issue7
Pagination1561-71
Date Published2016 07
ISSN1930-739X
KeywordsAdipose Tissue, Adult, Age Factors, Body mass index, Cohort Studies, Female, Hispanic Americans, Humans, Male, Middle Aged, Obesity, regression analysis, Risk Factors, Sex Factors, United States
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.

DOI10.1002/oby.21495
Alternate JournalObesity (Silver Spring)
PubMed ID27184359
PubMed Central IDPMC4925254
Grant ListN01HC65236 / HL / NHLBI NIH HHS / United States
N01HC65235 / HL / NHLBI NIH HHS / United States
N01HC65234 / HL / NHLBI NIH HHS / United States
P30 CA060553 / CA / NCI NIH HHS / United States
N01HC65233 / HL / NHLBI NIH HHS / United States
N01HC65237 / HL / NHLBI NIH HHS / United States
R01 HL095856 / HL / NHLBI NIH HHS / United States
UL1 TR001073 / TR / NCATS NIH HHS / United States
P2C HD050924 / HD / NICHD NIH HHS / United States
MS#: 
0189
Manuscript Lead/Corresponding Author Affiliation: 
Field Center: Bronx (Einstein College of Medicine)
ECI: 
Yes
Manuscript Status: 
Published