Body Composition Parameters in Healthy Brazilian Women Differ From White,Black, and Hispanic American Women Reference Range |
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| Authors: | Maria das Graças Barbosa Sousa Marcelo M. Pinheiro Vera L. Szejnfeld Charlles H.M. Castro |
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| Affiliation: | 1. Prevention of Metabolic Disorders Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran;2. Department of Epidemiology, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran;3. Department of Public Health, Erasmus MC, Rotterdam, The Netherlands;4. The George Institute for Global Health, University of Oxford, Oxford, United Kingdom;5. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran;6. Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran;1. Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA;2. Department of Exercise Science and Physical Education, Montclair State University, Montclair, NJ, USA;3. Department of Medicine, Division of Renal-Electrolyte, University of Pittsburgh, Pittsburgh, PA, USA |
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| Abstract: | Body composition (BC) seems to vary between populations, suggesting the need for regional reference data. The objective of this study was to determine BC in Brazilian women. Five hundred healthy non-black Brazilian women aged 20 yr or older were included. Women with fractures, chronic diseases, medications affecting bone and mineral metabolism, coronary heart disease, pregnancy, silicone prosthesis, and Asians or Indians were excluded. BC by dual-energy X-ray absorptiometry (DXA) included total lean mass, appendicular lean mass, skeletal muscle index, and total body fat (BF). Reference values were made for 10-yr age groups. Lean mass decreased with age reaching the lowest values in women aged 80 yr and older. BF showed a bimodal distribution: increased with age until 50–59 yr, with a slight subsequent decrease. BF in Brazilian women did not differ from American women, except in the age groups 75–79 and 80–84 yr, where BF was lower (p < 0.05). Fat mass index was consistently higher between African and Hispanic American women (p < 0.05). Lean mass was consistently lower in Brazilian women compared with Americans in almost all age and ethnic groups (p < 0.05). BC in Brazilian women differs from American reference data. Our findings support the notion that BC varies according to ethnicity. |
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