Department of Nutrition and Food Sciences, American University of Beirut, Riad El-Solh, Beirut, 1107-2020, Lebanon.
Department of Epidemiology and Population Health, American University of Beirut, Riad El-Solh, Beirut, 1107-2020, Lebanon.
BMC Public Health. 2020 Feb 19;20(1):256. doi: 10.1186/s12889-020-8351-3.
The aim of the current study is to describe the effectiveness of a school-based intervention when delivered by a non-nutrition specialist (trained schoolteachers) as compared to an expert in nutrition.
Two trials of the same school-based intervention using the same intervention package were delivered, one by nutritionists and another by trained schoolteachers. The intervention focused mainly on dietary behaviours, as well as physical activity. In both trials, purposively selected schools were randomized to intervention or control groups; students (aged 9-11 years) in both groups were compared at post-test on knowledge and self-efficacy scores, as well as dietary and physical activity behaviours, controlling for their baseline status on the various measures. All analyses accounted for clustering at the school level.
In both trials, a statistically significantly greater improvement was observed for both the knowledge and self-efficacy scores in intervention vs. school students. When the programme was delivered by trained schoolteachers, frequency of breakfast intake was increased, crisps consumption was reduced, but no change in fruit and vegetable consumption was observed (latter increased when delivered by nutrition professionals only). Physical activity did not improve in both trials.
Trained schoolteachers can have a positive impact on students' dietary behaviours with the appropriate training to ensure they are equipped with the right information, skills, and resources to deliver the programme with the highest fidelity.
ClinicalTrial.gov Identifier: NCT03040271. Retrospectively registered on 2 February 2017.
本研究旨在描述由非营养专家（经过培训的学校教师）而非营养专家实施的基于学校的干预措施的有效性。
使用相同的干预包实施了两项基于学校的干预试验，一项由营养师实施，另一项由经过培训的学校教师实施。该干预措施主要侧重于饮食行为以及身体活动。在两项试验中，有针对性地选择的学校被随机分配到干预组或对照组；两组中的学生（年龄为 9-11 岁）在进行后测时，比较知识和自我效能得分，以及饮食和身体活动行为，同时控制他们在各种措施上的基线状态。所有分析均考虑到学校层面的聚类。
在两项试验中，与学校对照组相比，干预组学生的知识和自我效能得分均有统计学意义上的显著提高。当由经过培训的学校教师实施该计划时，早餐摄入频率增加，薯片中的摄入量减少，但观察到水果和蔬菜的摄入量没有变化（只有当由营养专业人员实施时，摄入量才会增加）。在两项试验中，身体活动均未得到改善。
经过适当培训的学校教师可以对学生的饮食行为产生积极影响，以确保他们具备正确的信息、技能和资源，以最高的保真度实施该计划。
ClinicalTrials.gov 标识符：NCT03040271。于 2017 年 2 月 2 日进行了回顾性注册。
