Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA.
J Nutr. 2010 Sep;140(9):1653-60. doi: 10.3945/jn.109.119131. Epub 2010 Jul 28.
In this study, we examined if children's food selection met the School Meals Initiative (SMI) standards and the recently released Institute of Medicine (IOM) recommendations. Mean food selection, plate waste, and food intake were also examined. Food intake of 2049 4th-6th grade students was measured objectively at lunch over 3 d with digital photography in 33 schools. The percent of children whose food selection met the SMI standards and IOM recommendations for energy (kJ), fat and saturated fat, calcium, iron, and vitamin A and C were calculated. The SMI standards provide lower limits for most nutrients; the IOM provides a range of values, including an upper limit for energy. Seventy-seven percent of children's energy selection met the SMI lower limit, but only 16% of children met the IOM's recommended range and 74% of children exceeded the upper limit. More than 70% of children exceeded the SMI and IOM's saturated fat recommendations. Children selected (mean +/- SD) 3168 +/- 621 kJ, discarded 882 +/- 581 kJ, and consumed 2286 +/- 716 kJ. Children were less likely to discard fat than carbohydrate, resulting in proportionally more fat being consumed. Most children met SMI and IOM recommendations for protein, calcium, iron, and vitamin A. With few exceptions, energy selection was similar among groups of children, but plate waste differed (P < 0.001), resulting in greater energy intake among boys compared with girls, Caucasians compared with African Americans, and heavier compared with lighter children. Children's selection was high in saturated fat and, based on IOM criteria, included excess energy.
在这项研究中,我们考察了儿童的食物选择是否符合学校膳食倡议 (SMI) 标准和最近发布的美国医学研究所 (IOM) 建议。还检查了平均食物选择、餐盘浪费和食物摄入量。在 33 所学校中,通过数字摄影对 2049 名 4 至 6 年级学生进行了为期 3 天的午餐客观食物摄入量测量。计算了符合 SMI 标准和 IOM 建议的能量 (kJ)、脂肪和饱和脂肪、钙、铁以及维生素 A 和 C 的儿童百分比。SMI 标准为大多数营养素提供了下限;IOM 提供了一系列值,包括能量的上限。77%的儿童的能量选择符合 SMI 的下限,但只有 16%的儿童符合 IOM 的推荐范围,74%的儿童超过了上限。超过 70%的儿童超过了 SMI 和 IOM 的饱和脂肪建议。儿童选择 (平均值 +/- SD) 为 3168 +/- 621 kJ,丢弃 882 +/- 581 kJ,消耗 2286 +/- 716 kJ。与碳水化合物相比,儿童丢弃的脂肪更少,导致消耗的脂肪比例更高。大多数儿童符合 SMI 和 IOM 对蛋白质、钙、铁和维生素 A 的建议。除了少数例外,各组儿童的能量选择相似,但餐盘浪费不同 (P < 0.001),导致男孩的能量摄入高于女孩,白种人高于非裔美国人,以及体重较重的儿童高于体重较轻的儿童。儿童的选择中饱和脂肪含量较高,根据 IOM 标准,其中包括过量的能量。