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Relationship between Body Fat and BMI in a US Hispanic Population-Based Cohort Study: Results from HCHS/SOL


Wong, William Wai-Lun; Strizich, Garrett M.; Heo, Moonseong; Heymsfield, Steven B.; Himes, John H.; Rock, Cheryl L.; Gellman, Marc D.; Siega-Riz, Anna Maria; Sotres-Alvarez, Daniela T.; & Davis, Sonia M., et al. (2016). Relationship between Body Fat and BMI in a US Hispanic Population-Based Cohort Study: Results from HCHS/SOL. Obesity, 24(7), 1561-1571. PMCID: PMC4925254


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.


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Journal Article

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Journal Title



Wong, William Wai-Lun
Strizich, Garrett M.
Heo, Moonseong
Heymsfield, Steven B.
Himes, John H.
Rock, Cheryl L.
Gellman, Marc D.
Siega-Riz, Anna Maria
Sotres-Alvarez, Daniela T.
Davis, Sonia M.
Arredondo, Elva M.
Van Horn, Linda V.
Wylie-Rosett, Judith
Sanchez-Johnsen, Lisa A. P.
Kaplan, Robert C.
Mossavar-Rahmani, Yasmin