Terry-McElrath Yvonne M, O'Malley Patrick M, Johnston Lloyd D
Institute for Social Research, University of Michigan , Ann Arbor, MI.
Child Obes. 2014 Jun;10(3):241-50. doi: 10.1089/chi.2014.0011.
No national studies have examined associations between (1) school food availability and accessibility and (2) secondary student fruit and vegetable (FV) consumption. This article uses 5 years of nationally representative data from secondary school students to examine associations between the school food environment and student fruit and green vegetable consumption.
From 2008 to 2012, cross-sectional, nationally representative data from US middle and high school students were collected annually on self-reported fruit and green vegetable consumption. Each year, data from administrators at each relevant school were collected on food item availability (any venue) and accessibility (total number of school sources). Data were obtained from 10,254 eighth-grade students in 317 schools and 18,898 tenth- and 12th-grade students in 518 schools. Associations were estimated by multi-level models controlling for student- and school-level characteristics.
Availability showed minimal association with student consumption. Candy/regular-fat snack accessibility was associated negatively with middle school fruit consumption. Salad bar availability and accessibility were positively associated with middle school green vegetable consumption; FV accessibility was associated positively with high school fruit and green vegetable consumption. Significant associations were consistent across student racial/ethnic and socioeconomic groups.
Forthcoming USDA nutrition standards for school foods and beverages sold outside of reimbursable meal programs should result in the removal of school candy/regular-fat snacks. In deciding which items to make available under the new standards, schools should consider increasing the number of FV sources-including salad bars-thereby potentially increasing student FV consumption.
尚无全国性研究探讨(1)学校食物的可获得性与可及性,以及(2)中学生水果和蔬菜(FV)消费之间的关联。本文利用来自中学生的5年全国代表性数据,研究学校食物环境与学生水果和绿色蔬菜消费之间的关联。
2008年至2012年,每年收集来自美国初中和高中学生的具有全国代表性的横断面数据,内容为自我报告的水果和绿色蔬菜消费情况。每年还收集各相关学校管理人员关于食物供应情况(任何场所)和可及性(学校供应源总数)的数据。数据来自317所学校的10254名八年级学生以及518所学校的18898名十年级和十二年级学生。通过控制学生和学校层面特征的多层次模型来估计关联。
食物供应与学生消费之间的关联极小。糖果/常规脂肪零食的可及性与初中学生的水果消费呈负相关。沙拉吧的供应和可及性与初中学生的绿色蔬菜消费呈正相关;FV的可及性与高中学生的水果和绿色蔬菜消费呈正相关。显著关联在学生种族/族裔和社会经济群体中是一致的。
即将出台的美国农业部关于非可报销膳食计划之外销售的学校食品和饮料的营养标准应会导致学校糖果/常规脂肪零食下架。在决定根据新标准提供哪些食品时,学校应考虑增加FV供应源的数量,包括沙拉吧,从而有可能增加学生的FV消费量。