School of Public Health, University of California, Berkeley, CA 94704, USA.
Nutrition Policy Institute, University of California Agriculture and Natural Resources, Berkeley, CA 94704, USA.
Int J Environ Res Public Health. 2020 Aug 18;17(16):5987. doi: 10.3390/ijerph17165987.
School lunch programs provide an opportunity to improve students' diets. We sought to determine the impact of a multifaceted intervention (cafeteria redesigns, increased points-of-sale and teacher education) on secondary students' perceptions of school-lunch quality and convenience and fruit and vegetable intake. Surveys ( = 12,827) from middle and high school students in 12 intervention and 11 control schools were analyzed. We investigated change in school-lunch perceptions and lunchtime and daily fruit and vegetable consumption from 2016 to 2018. Among 8th graders, perceptions that school lunch tastes good and that school lunch was enough to make students feel full increased 0.2 points (on a 5-point scale; < 0.01) in intervention schools relative to control schools. Among 10th graders, lunchtime fruit and vegetable consumption increased 6% in intervention relative to control schools ( < 0.05 and < 0.01 respectively). Daily fruit intake increased 0.1 cups/day in intervention relative to control schools among 9th graders ( < 0.01). This study provides important evidence on the limited effect of design approaches in the absence of meal changes. We observed only modest changes in school lunch perceptions and fruit and vegetable consumption that were not consistent across grades, suggesting that additional efforts are needed to improve school-lunch uptake.
学校午餐计划为改善学生饮食提供了机会。我们旨在确定一个多方面干预措施(重新设计自助餐厅、增加销售点和教师教育)对中学生对学校午餐质量和便利性以及水果和蔬菜摄入量的看法的影响。对 12 所干预学校和 11 所对照学校的中学生进行了调查(n = 12827)。我们调查了 2016 年至 2018 年间学校午餐看法以及午餐和日常水果和蔬菜消费的变化。与对照学校相比,八年级学生对学校午餐味道好和学校午餐足以让学生感到饱足的看法增加了 0.2 分(五分制;<0.01)。与对照学校相比,十年级学生在午餐时间摄入的水果和蔬菜增加了 6%(分别<0.05 和<0.01)。与对照学校相比,9 年级学生每天摄入的水果量增加了 0.1 杯(<0.01)。这项研究提供了关于在没有膳食变化的情况下设计方法的有限效果的重要证据。我们仅观察到学校午餐看法和水果和蔬菜消费的适度变化,这些变化在不同年级之间并不一致,这表明需要进一步努力来提高学校午餐的摄入量。