Bone mineral density of the lumbar spine of Brazilian children and adolescents aged 6 to 14 years

Bone mineral density of the lumbar spine of Brazilian children and adolescents aged 6 to 14 years

Author Fonseca, A.s.m. Google Scholar
Szejnfeld, Vera Lucia Autor UNIFESP Google Scholar
Terreri, Maria Teresa Ramos Ascensão Autor UNIFESP Google Scholar
Goldenberg, J. Autor UNIFESP Google Scholar
Ferraz, Marcos Bosi Autor UNIFESP Google Scholar
Hilário, Maria Odete Esteves Autor UNIFESP Google Scholar
Institution Universidade Federal do Rio Grande do Norte Departamento de Pediatria
Universidade Federal de São Paulo (UNIFESP)
Abstract The authors performed a study of bone mass in eutrophic Brazilian children and adolescents using dual-energy X-ray absorptiometry (DXA) in order to obtain curves for bone mineral content (BMC) and bone mineral density (BMD) by chronological age and correlate these values with weight and height. Healthy Caucasian children and adolescents, 120 boys and 135 girls, 6 to 14 years of age, residents of São Paulo, Brazil, were selected from the Pediatric Department outpatient clinic of Hospital São Paulo (Universidade Federal de São Paulo (UNIFESP)). BMC, BMD and the area of the vertebral body of the L2-L4 segment were obtained by DXA. BMC and BMD for the lumbar spine (L2-L4) presented a progressive increase between 6 and 14 years of age in both sexes, with a distribution that fitted an exponential curve. We identified an increase of mineral content in female patients older than 11 years which was maintained until 13 years of age, when a new decrease in the velocity of bone mineralization occurred. Male patients presented a period of accelerated bone mass gain after 11 years of age that was maintained until 14 years of age. At 14 years of age the mean BMD values for boys and girls were 0.984 and 1.017 g/cm², respectively. A stepwise multiple regression analysis of paired variables showed that the vertebral area-age pair was the most significant in the determination of BMD values and the introduction of a third variable (weight or height) did not significantly increase the correlation coefficient.
Keywords bone mineral density
lumbar spine densitometry
children
adolescents
Language English
Date 2001-03-01
Published in Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 34, n. 3, p. 347-352, 2001.
ISSN 0100-879X (Sherpa/Romeo, impact factor)
Publisher Associação Brasileira de Divulgação Científica
Extent 347-352
Origin http://dx.doi.org/10.1590/S0100-879X2001000300008
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000167640800008
SciELO ID S0100-879X2001000300008 (statistics in SciELO)
URI http://repositorio.unifesp.br/handle/11600/1116

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