How useful is body mass index for comparison of body fatness across age, sex, and ethnic groups?
How useful is body mass index for comparison of body fatness across age, sex, and ethnic groups?
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DOI：
10.1093/oxfordjournals.aje.a008733
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发表时间：
1996-02-01
影响因子：
5
通讯作者：
Heymsfield, SB
中科院分区：
文献类型：
--
作者：
Gallagher, D;Visser, M;Heymsfield, SB
这项研究验证了这样一个假设，即体重指数（BMI）是身体肥胖的代表，与年龄、性别和种族无关。在1986年至1992年期间，作者共研究了202名黑人和504名白色男性和女性，他们居住在纽约市或附近，年龄在20-94岁之间，BMI为18-35 kg/m2。使用四室身体组成模型评估总体脂（表示为体重百分比（BF%）），该模型不依赖于已知的年龄、性别或种族依赖性假设，在所有四个性别和种族组中，观察到BF%-BMI关系具有统计学显著的年龄依赖性（p值< 0.05-0.001），老年人的BF%高于具有可比BMI的年轻人，在每个种族组的BF%-BMI关系中也观察到统计学显著的性别效应（p值< 0.001）在首先控制年龄后，对于相同的BMI，在整个成年期内，女性的总体脂量显著高于男性，种族没有显著影响BF%-在首先控制年龄和性别后BMI的关系，即使黑人女性和男性相对于身高都有较长的外展骨长度（p值分别< 0.001和0.02）与白色女性和男性相比，对于总共706名受试者，体重指数单独占体脂百分比个体间差异的25%;将年龄和性别作为自变量添加到回归模型中将方差（r（2））增加到67%。这些结果表明，BMI是年龄和性别依赖时，作为一个指标的身体肥胖，但它是独立的种族在黑人和白色成年人。
This study tested the hypothesis that body mass index (BMI) is representative of body fatness independent of age, sex, and ethnicity, Between 1986 and 1992, the authors studied a total of 202 black and 504 white men and women who resided in or near New York City, were ages 20-94 years, and had BMIs of 18-35 kg/m(2)., Total body fat, expressed as a percentage of body weight (BF%), was assessed using a four-compartment body composition model that does not rely on assumptions known to be age, sex, or ethnicity dependent, Statistically significant age dependencies were observed in the BF%-BMI relations in all four sex and ethnic groups (p values < 0.05-0.001) with older persons showing a higher BF% compared with younger persons with comparable BMIs, Statistically significant sex effects were also observed in BF%-BMI relations within each ethnic group (p values < 0.001) after controlling first for age, For an equivalent BMI, women have significantly greater amounts of total body fat than do men throughout the entire adult life span, Ethnicity did not significantly influence the BF%-BMI relation after controlling first for age and sex even though both black women and men had longer appendicular bone lengths relative to stature (p values < 0.001 and 0.02, respectively) compared with white women and men, Body mass index alone accounted for 25% of between-individual differences in body fat percentage for the 706 total subjects; adding age and sex as independent variables to the regression model increased the variance (r(2)) to 67%. These results suggest that BMI is age and sex dependent when used as an indicator of body fatness, but that it is ethnicity independent in black and white adults.