The main objective of this paper was to determine the utility of various anthropometric measures to assess total and regional body fatness using dual-energy X-ray absorptiometry (DXA) as the criterion in 454 adolescent boys and girls aged 12-19 years. Multivariable regression analyses of gender-specific and gender-combined models were used to determine anthropometric measures on DXA-derived body fatness models, after adjusting for known confounding biological factors. Partial correlation analyses, after adjusting for age, pubertal growth status and ethnicity in boys and girls, showed that body mass index (BMI), waist circumference (WC), waist-to-hip ratio (WHR), and waist-height ratio (WhtR) were significantly correlated with total body fat (TBF), percent body fat (%BF), android region fat (ARF) and trunk fat (TF) (all p<0.0001). BMI was the greatest independent determinant, contributing 43.8%-80.9% of the total variance for DXA-derived body fatness models. Results confirmed that a simple anthropometric index such as the BMI is a good surrogate indicator of body fat levels in Malay and Chinese adolescents.
本篇文章主要目的是以雙能量X 光吸收儀(DXA)當作標準，評量各種體位測量 法對估測454 名12-19 歲的青春期男孩和女孩其整體及局部體脂肪的效用。在校 正已知的生物學干擾因子後，利用DXA 衍生的體脂肪模式，以性別分層及合併 模式的多元回歸分析評估各體位測量值的預測性。在校正男女性的年齡、青春 期生長狀況與種族後，淨相關分析顯示身體質量指數(BMI)、腰圍(WC)、腰臀圍 比(WHR)及腰圍身高比(WhtR)與總體脂肪(TBF)、體脂肪百分比(%BF)、腰腹部 脂肪(ARF)及軀幹脂肪(TF)具有顯著相關性(全部p<0.0001)。BMI 為最佳的獨立 預測因子，占DXA 衍生體脂肪模式的總變異43.8%-80.9%。此研究結果證實簡 單的體位測量指標如BMI，為馬來及華裔青少年良好的體脂肪測量替代指標。