Wu C-H, Heshka S, Wang J, Pierson R N, Heymsfield S B, Laferrère B, Wang Z, Albu J B, Pi-Sunyer X, Gallagher D
Obesity Research Center, St-Luke' s-Roosevelt Hospital Center, New York, NY, USA.
Int J Obes (Lond). 2007 Sep;31(9):1384-91. doi: 10.1038/sj.ijo.0803624. Epub 2007 Apr 24.
To investigate the influence of age, sex, ethnicity and total fatness on central obesity in four ethnic populations.
Cross-sectional analysis of study subjects enrolled from 1993 to 2005.
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)).
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.
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 (approximately 0.20-0.25 kg/decade) with the effect more pronounced in AA men ( approximately 0.33 kg/decade). For women, the increment of truncal fat per decade was reduced in CA and AA women (approximately 0.07 kg) compared with As and HA women (approximately 0.33 kg). Adjusted for mean values of covariates in our sample, AA had less truncal fat than As.
The accumulation of truncal fat is strongly related to age, ethnicity and total fatness in both men and women.
研究年龄、性别、种族和总体肥胖程度对四个种族人群中心性肥胖的影响。
对1993年至2005年纳入的研究对象进行横断面分析。
一个多民族（白种人（CA）、非裔美国人（AA）、西班牙裔美国人（HA）和亚裔（As））的便利样本，包括604名男性和1192名女性（年龄18 - 96岁，体重指数15.93 - 45.80 kg/m²）。
通过双能X线吸收法测量全身脂肪（TBF）和躯干脂肪。使用一般线性回归模型检验与经log(10)转换的躯干脂肪的独立关联。
在所有种族中，男性的体脂百分比低于女性，但躯干脂肪多于女性。经log(10)转换的躯干脂肪随TBF增加，大致呈平方根函数关系。在老年时，CA、HA和As族男性的躯干脂肪量增加较多（约0.20 - 0.25 kg/十年），在AA族男性中更为明显（约0.33 kg/十年）。对于女性，与As和HA族女性（约0.33 kg）相比，CA和AA族女性每十年躯干脂肪的增加量减少（约0.07 kg）。根据我们样本中协变量的平均值进行调整后，AA族的躯干脂肪比As族少。
男性和女性的躯干脂肪堆积与年龄、种族和总体肥胖程度密切相关。
