Jaime Patrícia Constante, Latorre Maria do Rosário Dias de Oliveira, Florindo Alex Antonio, Tanaka Tomoe, Zerbini Cristiano Augusto de Freitas
Heliópolis Hospital, Faculdade de Saúde Pública, Universidade de São Paulo, Avenida Dr. Arnaldo 715, CEP 01246-904, São Paulo(SP), Brazil.
Sao Paulo Med J. 2006 Sep 7;124(5):267-70. doi: 10.1590/s1516-31802006000500006.
Osteoporosis and fragility fractures are an important public health problem. Although bone loss occurs with age universally, the incidence of bone loss fractures varies greatly between racial groups. The aim of this study was to examine the relationship between calcium, protein and energy intake and the bone mineral density of the femoral neck in Brazilian black and white men.
This was a cross-sectional study, carried out in a teaching hospital in São Paulo.
The participants were 277 volunteer men, aged 50 years or older. The bone mineral density of the femoral neck (FNBMD) was measured by dual energy x-ray absorptiometry. The relationship between FNBMD and calcium, protein and energy intake, as assessed by a three-day food record, was analyzed using multiple linear regression models and was adjusted for age, height, physical activity and education level. The analysis was stratified by race (white and black).
FNBMD presented similar means in the two racial groups (p = 0.538). Protein and energy intake did not show a significant correlation with FNBMD, either in the white or in the black population. Calcium intake showed a strong and independent correlation with FNBMD in the black men (partial r = 0.42).
Calcium intake was a determinant of FNBMD for black men, aged 50 years or older, but not for the white ones.
骨质疏松症和脆性骨折是一个重要的公共卫生问题。尽管骨质流失普遍随年龄增长而发生，但不同种族群体中骨质流失性骨折的发生率差异很大。本研究的目的是探讨巴西黑人和白人男性钙、蛋白质和能量摄入量与股骨颈骨密度之间的关系。
这是一项在圣保罗一家教学医院开展的横断面研究。
参与者为277名年龄在50岁及以上的男性志愿者。采用双能X线吸收法测量股骨颈骨密度（FNBMD）。通过为期三天的饮食记录评估FNBMD与钙、蛋白质和能量摄入量之间的关系，使用多元线性回归模型进行分析，并对年龄、身高、身体活动和教育水平进行了校正。分析按种族（白人和黑人）分层。
两个种族群体的FNBMD均值相似（p = 0.538）。蛋白质和能量摄入量在白人或黑人人群中均与FNBMD无显著相关性。黑人男性的钙摄入量与FNBMD呈强独立相关性（偏相关系数r = 0.42）。
钙摄入量是50岁及以上黑人男性FNBMD的一个决定因素，但对白种男性不是。
