Department of Public Health, Kinki University Faculty of Medicine, Osaka-Sayama, Japan.
Circ J. 2012;76(12):2848-54. doi: 10.1253/circj.cj-12-0417. Epub 2012 Aug 11.
Body fat distribution is defined as the pattern of fat deposits in different regions of the body and usually expressed as a ratio. There are few studies on the relationship between blood pressure and the ratio of central fat measured on dual-energy X-ray absorptiometry (DXA) in childhood.
The source population consisted of 521 fifth-grade children who attended elementary school in Hamamatsu, Japan, with 401 (77.0%) included in the study. Regional fat was determined using a DXA scanner in a mobile test room. The ratio of trunk to appendicular fat was calculated as trunk fat mass divided by appendicular (arms and legs) fat mass. In boys, the trunk-to-appendicular fat ratio was significantly related to systolic blood pressure and diastolic blood pressure after adjusting for confounding factors such as height and pubic hair appearance. In addition, an increase in trunk-to-appendicular fat ratio was related to an increase in blood pressure after adjusting for confounding factors including whole body fat volume and trunk fat volume. The relationship between fat distribution and blood pressure was not observed in girls.
An excessive proportion of trunk fat was related to increased blood pressure in the boys in a general population of Japanese children. The relationship between fat distribution and blood pressure was independent of the relationship between fat volume and blood pressure.
体脂分布是指身体不同部位脂肪沉积的模式，通常以比值表示。关于儿童期双能 X 射线吸收仪（DXA）测量的中心脂肪与血压之间的关系，研究较少。
本研究的原始人群为日本滨松市 521 名五年级小学生，其中 401 名（77.0%）纳入研究。采用移动测试室中的 DXA 扫描仪确定局部脂肪。通过躯干脂肪质量除以四肢（手臂和腿部）脂肪质量计算躯干与四肢脂肪的比值。在男孩中，在调整身高和阴毛出现等混杂因素后，躯干与四肢脂肪比值与收缩压和舒张压显著相关。此外，在调整包括全身脂肪量和躯干脂肪量在内的混杂因素后，躯干与四肢脂肪比值的增加与血压升高相关。在女孩中未观察到脂肪分布与血压之间的关系。
在日本儿童的一般人群中，过多的躯干脂肪与男孩的血压升高有关。脂肪分布与血压之间的关系独立于脂肪量与血压之间的关系。
