Mobile food vending and the after-school food environment.
Mobile food vending and the after-school food environment.
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DOI：
10.1016/j.amepre.2009.09.030
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发表时间：
2010-01
影响因子：
5.5
通讯作者：
Laraia B
中科院分区：
文献类型：
--
作者：
Tester JM;Yen IH;Laraia B
低收入和少数族裔儿童的肥胖和超重率更高。更好地了解他们的食物来源是很重要的。由于这些人群走路上学的比例较高，这些孩子可能更多地接触到学校周围的食物环境。流动食品摊贩是美国城市地区食品环境的一个未被充分研究的方面。本研究的目的是观察一个已知有移动售货的城市地区的放学后食品环境，以研究学校附近遇到的供应商的范围和放学后出售的物品。2008年春，在加州奥克兰市一个以拉丁裔为主的地区，对九所公立学校四分之一英里范围内放学后流动食品摊贩的存在情况进行了评估。在六所定期有摊贩存在的学校，对流动摊贩进行了观察，记录了交易、消费者和物品的特征。在23天的37个观察小时内，有1355件物品卖给了1195个人。56%的交易涉及没有成人在场的儿童。出售的食品种类繁多，虽然有些摊贩出售低营养、高能量的食品，但也有摊贩出售完整的和加工过的（预切和袋装）新鲜水果和蔬菜。这些完整的水果和加工过的水果和蔬菜中，大约有40%是儿童食用的。平均而言，每个孩子每次消费1.54美元的食物。城市地区的流动食品摊贩助长了儿童放学后吃零食的现象，应将其视为学校食品环境的一个组成部分。
Low-income and minority children have higher rates of obesity and overweight. Greater understanding of their food access is important. Because of higher rates of walking to school in these populations, these children likely have greater exposure to the food environment immediately around their schools. Mobile food vendors are an understudied aspect of the food environment in U.S. urban areas. This study aims to observe the after-school food environment in an urban area where mobile vending is known to occur in order to study the range of vendors encountered near schools and the items sold in the after-school period. In the spring of 2008, the presence of mobile food vendors after school within ¼ mile of nine public schools was assessed in a predominantly Latino district of Oakland CA. At six schools with regular presence of vendors, observations were made at mobile vendors documenting characteristics of transactions, consumers, and items. During 37 observation-hours across 23 days, there were 1355 items sold to 1195 individuals. Fifty-six percent of the transactions involved children with no adults present. There was a wide range in foods sold, and although there were vendors selling low-nutrient, energy-dense foods, there were also vendors selling whole and processed (precut and bagged) fresh fruits and vegetables. Roughly 40% of these whole fruits and processed fruits and vegetables were consumed by children. On average, children each consumed $1.54 of foods per transaction. Mobile food vendors in urban areas contribute to after-school snacking among children, and should be considered as a component of the school food environment.