Mehdad Slimane, Hamrani Abdeslam, El Kari Khalid, El Hamdouchi Asmaa, Barakat Amina, El Mzibri Mohamed, Mokhtar Najat, Aguenaou Hassan
Unité Mixte de Recherche en Nutrition et Alimentation, (URAC 39), Centre National de l'Energie, des Sciences et Techniques Nucléaires, Université Ibn Tofaïl, Kenitra, Morocco.
J Nutr Metab. 2012;2012:510458. doi: 10.1155/2012/510458. Epub 2011 Nov 28.
Objectives. The study aimed to assess the relationship between body fat and each of body mass index (BMI) and waist circumference (WC), and to test the effectiveness of fat mass (FM), percent of body fat (PBF), BMI, and WC in predicting high levels of fasting blood glucose (FBG). Methods. A total of 167 adolescents aged 11-17 years were recruited from Rabat region. BMI and WC were determined using standard equipments. FM and PBF were derived from isotope dilution technique. FBG was determined by the hexokinase method. Results. Regardless of the weight status, BMI showed a strong positive correlation with FM and PBF in both genders. WC was significantly correlated with FM in boys and girls, and with PBF in different groups of girls and boys of the study sample. However, there was no significant relationship between WC and PBF in normal weight and overweight-obese groups of boys. FBG was highly correlated with FM and PBF in girls of the study sample and in overweight-obese girls. Similar significant relationship between FBG and both BMI and WC was observed in overweight-obese girls, while there was no significant association between FBG and other variables in boys and normal-weight girls. Conclusion. BMI and WC were closely associated with FM and PBF, respectively. However, the degree of these associations depends on gender and weight status. BMI may provide a better proxy estimate of overall adiposity than WC; nevertheless, both of them would appear to be a reasonable surrogate for FM and PBF as screening tools to identify adolescents at risk of developing excess body fat and high level of FBG.
目的。本研究旨在评估体脂与体重指数（BMI）和腰围（WC）之间的关系，并测试脂肪量（FM）、体脂百分比（PBF）、BMI和WC在预测空腹血糖（FBG）高水平方面的有效性。方法。从拉巴特地区招募了167名年龄在11至17岁的青少年。使用标准设备测定BMI和WC。FM和PBF通过同位素稀释技术得出。FBG采用己糖激酶法测定。结果。无论体重状况如何，BMI在男女两性中均与FM和PBF呈强正相关。WC在男孩和女孩中均与FM显著相关，在研究样本的不同男孩和女孩组中与PBF显著相关。然而，在正常体重和超重肥胖男孩组中，WC与PBF之间无显著关系。在研究样本中的女孩以及超重肥胖女孩中，FBG与FM和PBF高度相关。在超重肥胖女孩中观察到FBG与BMI和WC之间存在类似的显著关系，而在男孩和正常体重女孩中，FBG与其他变量之间无显著关联。结论。BMI和WC分别与FM和PBF密切相关。然而，这些关联的程度取决于性别和体重状况。BMI可能比WC能更好地替代总体肥胖程度；尽管如此，它们两者似乎都是FM和PBF的合理替代指标，作为筛查工具来识别有发展为体脂过多和FBG高水平风险的青少年。
