黎族人的瘦体与脂肪质量指数

2014年11月在海南省五指山市5个黎族村寨测量了607例(男为308例,女为299例)黎族人体质量、身高等6项体成分指标值,计算了黎族人的体脂率(P_(bf))、瘦体质量(m_l)、脂肪质量(m_f)、瘦体质量指数(I_(lm))、脂肪质量指数(I_(fm))。研究发现,女性体脂率、脂肪质量、脂肪质量指数都明显大于男性,瘦体质量、瘦体质量指数均明显小于男性。随年龄增长,黎族人身高、瘦体质量逐渐减小,体脂率、脂肪质量、脂肪质量指数逐渐增大。受试者特征曲线显示身体质量指数、脂肪质量指数都可以适宜评价黎族人的体脂率,而且脂肪质量指数对体脂率的估算准确性比身体质量指数更高。这也提示脂肪质量指数是比身体质量指数评价肥胖更好的指标。

Lean mass and fat mass indices of the Li people in Hainan

Stature, body mass and four other body composition inde values of 607 Li adults (308 males and 299 females) were measured in five villages of Wuzhishan City, Hainan Province. The percent body fat (Pbf), lean mass (ml), fat mass (mf), lean mass index (Ilm) and fat mass index (Ifm) were calculated in November 2014. The study finds that Pbf, mf and Ifm of females are higher than those of males, while ml and Ilm values are the opposite. As age increases, stature and ml of the Li decreases gradually, and Pbf, mf, and Ifmincrease gradually. The characteristic curve of the sample indicates that both Ibm and Ifm can predict Pbf of the Li, and accuracy of the Ifm is much higher than accuracy of Ibm in estimating Pbf. It also indicates that Ifm is a better index than Ibm in evaluating fatness.