Exploring changes in middle-school student lunch consumption after local school food service policy modifications
Exploring changes in middle-school student lunch consumption after local school food service policy modifications
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DOI：
10.1079/phn2005878
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发表时间：
2006-09-01
影响因子：
3.2
通讯作者：
Ralston, Katherine
中科院分区：
文献类型：
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作者：
Cullen, Karen Weber;Watson, Kathy;Ralston, Katherine
目的探讨学校食品政策变化对中学生午餐消费的影响。方法收集德克萨斯州休斯敦地区3所中学学生两年的午餐食品记录。在第一年，学校的食物环境没有发生变化。在该学年结束后，所有学校的小吃店都被食品处处长取缔了薯条和甜点。学生们记录了食物和饮料的消耗量和来源。服务点购买机提供了两年期间从小吃店购买的食品和饮料的逐日电子数据文件。使用独立的t检验和时间序列分析来记录政策变化对两年间消费和销售数据的影响。结果总体上，政策变化后学生对含糖饮料的消费量下降，牛奶、钙、维生素A、饱和脂肪和钠的消费量增加。小吃店的零食薯片消费量在第二年有所下降；然而，在研究期间，来自自动售货机的零食薯片和糖果的消费量增加了一倍，学习学校的自动售货机数量翻了一番。冰激凌销售量在2年级显著增加。结论学校食品政策的改变会导致学生在目标环境中的消费发生变化。但是，如果不是所有环境都进行类似的更改，则可能会发生补偿。
Objective This study assessed the impact of changes in school food policy on student lunch consumption in middle schools.Methods Two years of lunch food records were collected from students at three middle schools in the Houston, Texas area. During the first year, no changes occurred in the school food environment. After that school year was completed, chips and dessert foods were removed from the snack bars of all schools by the Food Service Director. Students recorded the amount and source of food and beverage items consumed. Point-of-service purchase machines provided a day-by-day electronic data file with food and beverage purchases from the snack bars during the 2-year period. Independent t-tests and time series analyses were used to document the impact of the policy change on consumption and sales data between the two years.Results In general, student consumption of sweetened beverages declined and milk, calcium, vitamin A, saturated fat and sodium increased after the policy change. Snack chips consumption from the snack bar declined in year 2; however, consumption of snack chips and candy from vending increased and the number of vending machines in study schools doubled during the study period. Ice cream sales increased significantly in year 2.Conclusions Policy changes on foods sold in schools can result in changes in student consumption from the targeted environments. However, if all environments do not make similar changes, compensation may occur.