Wageningen University & Research, Marketing and Consumer Behaviour group, Hollandseweg 1, 6706, KN, Wageningen, the Netherlands.
Vrije Universiteit Amsterdam, Faculty of Science, Amsterdam Public Health research institute, De Boelelaan 1085, 1081, HV, Amsterdam, the Netherlands.
BMC Public Health. 2020 May 12;20(1):662. doi: 10.1186/s12889-020-08807-1.
Since there is a shift from eating lunch at home to eating lunch at primary schools in the Netherlands, providing a school lunch may be an important opportunity to improve the diet quality of Dutch children. Therefore, the aim of this Healthy School Lunch project is to encourage healthy eating behavior of children at primary schools by offering a healthy school lunch, based on the guidelines for a healthy diet. In this study, two research questions will be addressed. The first research question is: What and how much do children consume from a self-served school lunch and how do they evaluate the lunch? The second research question is: Do children compensate healthier school lunches by eating less healthy outside school hours? The purpose of this paper is to report the rationale and study design of this study.
In the Healthy School Lunch project children in grades 5-8 (aged 8-12 years) of three primary schools in the Netherlands will receive a healthy school lunch for a 6-month period. To answer research question 1, lunch consumption data will be collected at baseline and again at 3- and 6-months. This will be measured with lunch photos and questionnaires among children. To answer the second research question, a quasi-experimental, pre-test post-test intervention-comparison group design (3 intervention schools and 3 comparison schools) will be carried out. Potential compensation effects will be measured with a single brief questionnaire among parents at the three intervention and three comparison schools at month 6 of the lunch period. The school lunch will also be evaluated by parents (discussion groups) and teachers and support staff (brief questionnaires).
Results of this study will provide valuable information to influence future school lunch interventions and policies.
This study is registered at the Netherlands trial register (NTR): trialregister.nl, Trial NL7402 (NTR7618), registered retrospectively at 2018-11-13.
由于荷兰人饮食习惯的改变，从在家吃午餐转变为在学校吃午餐，因此为孩子们提供营养均衡的学校午餐可能是改善荷兰儿童饮食质量的重要机会。基于健康饮食指南，“健康学校午餐”项目旨在通过提供健康的学校午餐来鼓励小学生养成健康的饮食习惯。本研究将回答两个研究问题。第一个研究问题是：孩子们从自助式学校午餐中吃了什么、吃了多少，以及他们如何评价这顿午餐？第二个研究问题是：孩子们在学校以外的时间是否会通过少吃不健康的食物来补偿更健康的学校午餐？本文旨在报告该研究的基本原理和研究设计。
在“健康学校午餐”项目中，荷兰三所小学 5-8 年级（8-12 岁）的儿童将在 6 个月的时间内享用健康的学校午餐。为了回答第一个研究问题，将在基线和 3 个月和 6 个月时收集午餐消费数据。这将通过儿童午餐照片和问卷调查来测量。为了回答第二个研究问题，将采用准实验、前后测试干预比较组设计（3 所干预学校和 3 所比较学校）进行研究。在午餐期间的第 6 个月，将通过对 3 所干预学校和 3 所比较学校的家长进行单次简短问卷调查，来测量潜在的补偿效应。家长（讨论小组）和教师及支持人员（简短问卷）还将对学校午餐进行评价。
本研究的结果将为影响未来学校午餐干预和政策提供有价值的信息。
本研究在荷兰试验注册库（NTR）注册：trialregister.nl，试验 NL7402（NTR7618），于 2018 年 11 月 13 日回顾性注册。
