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美国公立学校提供和供应的膳食:它们符合营养标准吗?

Meals offered and served in US public schools: do they meet nutrient standards?

作者信息

Crepinsek Mary Kay, Gordon Anne R, McKinney Patricia M, Condon Elizabeth M, Wilson Ander

机构信息

Mathematica Policy Research, Inc, 955 Massachusetts Ave, Ste 801, Cambridge, MA 02139, USA.

出版信息

J Am Diet Assoc. 2009 Feb;109(2 Suppl):S31-43. doi: 10.1016/j.jada.2008.10.061.

Abstract

BACKGROUND

Concerns about the diets of school-aged children and new nutrition recommendations for the US population have increased interest in the nutritional quality of meals available through the National School Lunch Program and School Breakfast Program.

OBJECTIVE

This article updates national estimates of the food energy and nutrient content of school meals and compares these estimates to federal nutrient standards established under the 1995 School Meals Initiative for Healthy Children.

DESIGN

Data were collected as part of the third School Nutrition Dietary Assessment Study, a nationally representative cross-sectional study fielded during school year 2004-2005. Menu and recipe data for a typical school week were collected in a mail survey with telephone assistance. Nutrient information for common commercially prepared food items was obtained from manufacturers, to supplement the Food and Nutrient Database for Dietary Studies used to analyze the data. Analyses were conducted for meals offered and meals served to (selected by) children.

SUBJECTS/SETTING: Samples of 130 public school districts that offered federally subsidized school meals, and 398 schools within those districts, participated in the study. Foodservice managers in each school completed a menu survey.

STATISTICAL ANALYSES PERFORMED

Descriptive tabulations present weighted means, proportions, and standard errors for elementary, middle, and high schools, and for all schools combined.

RESULTS

Most schools offered and served meals that met the standards for protein, vitamins, and minerals. Fewer than one third of schools met the standards for energy from fat or saturated fat in the average lunch, whereas three fourths or more met the fat standards in school breakfasts. For both meals, average levels of sodium were high and fiber was low relative to Dietary Guidelines for Americans 2005 recommendations.

CONCLUSIONS

For school meals to meet nutrient standards and promote eating behaviors consistent with the Dietary Guidelines, future policy, practice, and research should focus on reducing levels of fat and sodium and increasing fiber.

摘要

背景

对学龄儿童饮食的关注以及针对美国人群的新营养建议,使得人们对通过国家学校午餐计划和学校早餐计划提供的膳食营养质量的兴趣增加。

目的

本文更新了学校膳食的食物能量和营养成分的全国估计值,并将这些估计值与1995年《健康儿童学校膳食倡议》制定的联邦营养标准进行比较。

设计

数据收集是第三次学校营养膳食评估研究的一部分,这是一项在2004 - 2005学年进行的具有全国代表性的横断面研究。在电话协助下通过邮件调查收集了典型学校周的菜单和食谱数据。从制造商处获取常见商业制备食品的营养信息,以补充用于分析数据的膳食研究食品和营养数据库。对提供的膳食以及儿童食用的(所选)膳食进行了分析。

对象/场所:130个提供联邦补贴学校膳食的公立学区样本以及这些学区内的398所学校参与了该研究。每所学校的食品服务经理完成了一份菜单调查。

进行的统计分析

描述性表格列出了小学、初中和高中以及所有学校合并后的加权均值、比例和标准误差。

结果

大多数学校提供和供应的膳食符合蛋白质、维生素和矿物质标准。平均午餐中,不到三分之一的学校达到了脂肪或饱和脂肪能量标准,而四分之三或更多的学校在学校早餐中达到了脂肪标准。对于这两种膳食,相对于《2005年美国人膳食指南》的建议,钠的平均含量较高,纤维含量较低。

结论

为使学校膳食符合营养标准并促进与膳食指南一致的饮食行为,未来的政策、实践和研究应侧重于降低脂肪和钠的含量并增加纤维。

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