Journal
INTERNATIONAL JOURNAL OF OBESITY
Volume 31, Issue 9, Pages 1384-1391Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.ijo.0803624
Keywords
central obesity; percent body fat; fat distribution; race; dual-energy X-ray absorptiometry
Categories
Funding
- NCRR NIH HHS [RR00645, M01 RR000645] Funding Source: Medline
- NIA NIH HHS [R29 AG014715-05, R29-AG14715] Funding Source: Medline
- NIDDK NIH HHS [R01 DK037352-12, P01 DK042618-120006, R01 DK067561, P30 DK-26687, DK RO1-37352, P30 DK026687-299012, P01 DK042618, DK PO1-42618, P30 DK026687, DK40414] Funding Source: Medline
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Objective: To investigate the influence of age, sex, ethnicity and total fatness on central obesity in four ethnic populations. Design: Cross-sectional analysis of study subjects enrolled from 1993 to 2005. Subjects: A multi-ethnic (Caucasian (CA), African-American (AA), Hispanic-American (HA) and Asian (As)) convenience sample of 604 men and 1192 women (aged 18-96 years, body mass index 15.93-45.80 kg/m(2)). Measurements: Total body fat (TBF) and truncal fat were measured by dual-energy X-ray absorptiometry. General linear regression models were used to test for independent associations with log(10)-transformed truncal fat. Results: For all ethnicities, men had a lower percent body fat and more truncal fat than women. Log(10)-transformed truncal fat increased with TBF approximately as a square root function. At older ages, there was a greater amount of truncal fat in CA, HA and As men(similar to 0.20-0.25 kg/decade) with the effect more pronounced in AA men (similar to 0.33 kg/decade). For women, the increment of truncal fat per decade was reduced in CA and AA women (similar to 0.07 kg) compared with As and HA women (similar to 0.33 kg). Adjusted for mean values of covariates in our sample, AA had less truncal fat than As. Conclusion: The accumulation of truncal fat is strongly related to age, ethnicity and total fatness in both men and women.
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