Facilitators and barriers to improving beverage consumption among primary school children in Belgium

Abstract Background School is seen as a relevant setting to intervene in children’s health behaviour, including their beverage consumption. A randomized controlled trial (DRINK) has been implemented to compare nutrition and sustainability-based interventions to reduce sugary beverages and to increase tap water consumptions among primary school children in French-speaking Belgium. The aim of this qualitative study was to describe the context before the intervention implementation and to identify the facilitators and barriers to implementing the project. Methods In 2021, the 48 schools included in the trial responded to a semi-structured interview prior to the intervention, and 30 were interviewed one year later. School characteristics (including socioeconomic index, SEI) and contextual components were summarised. The qualitative corpus was analysed using thematic content methods to identify emerging themes, then classified into obstacles and facilitators. Results Of the 48 schools, 70.8% were Walloon, 76.6% had a medium or high SEI, and 41.7% included less than 90 pupils. The majority had already implemented nutrition and sustainable development initiatives before the trial. While taps were available in classrooms and reusable bottles were used, the initiatives could be extended, e.g. to increasing the number of water points. The main facilitators were the interest to receive additional support by the schools already involved in other projects, and the flexibility of the intervention. The main barriers were related to lack of access to tap water; insufficient support for the implementation of the intervention; and poor availability of school staff to get involved in such a project. Conclusions Alongside the main trial findings, understanding the facilitators and barriers will enable the intervention to be further adapted and extended. Considering the school context and perceptions is essential to ensure effective and durable school health initiatives. Key messages • Largely involved in promoting nutrition and sustainability, the schools were keen to receive support to continue. • Strengthening access to water, communication and support for schools are essential.