Limited evidence is available about (non)-representativeness of participants in health-promoting interventions. The Dutch Healthy Primary School of the Future (HPSF)-study is a school-based study aiming to improve health through altering physical activity and dietary behaviour, that started in 2015 (registered in ClinicalTrials.gov on14-06-2016, NCT02800616). The study has a response rate of 60%. A comprehensive non-responder analysis was carried out, and responders were compared with schoolchildren from the region and the Netherlands using a cross-sectional design. External sources were consulted to collect non-responder, regional, and national data regarding relevant characteristics including sex, demographics, health, and lifestyle. The Chi-square test, Mann-Whitney U test, or Student's t-test were used to analyse differences.
Children’s motor competence (MC) has declined in the past decades, while sedentary behavior (SB) has increased. This study examined the association between MC and physical activity (PA) levels among primary schoolchildren. Demographics, body height and weight, MC (Athletic Skills Track), and PA levels (ActiGraph, GT3X+) were assessed among 595 children (291 boys, mean age = 9.1 years, SD = 1.1). MC was standardized into five categories: from very low to very high. PA levels were classified into SB, light PA (LPA), and moderate-to-vigorous PA (MVPA). Mixed-model analyses were conducted with PA levels as dependent variables and MC as the independent variable, while adjusting for age, gender, and body mass index (BMI) z-score on the individual level. A negative association between MC and SB and a positive association between MC and MVPA were found. The strength of both associations increased as children expressed lower or higher levels of MC. MC is an important correlate of both SB and MVPA, particularly for children with very high or low MC. Developing and improving children’s MC may contribute to spending less time in SB and more time in MVPA, particularly for high-risk groups, i.e., children with low MC. Moreover, addressing MC development and PA promotion simultaneously might create positive feedback loops for both children’s MC and PA levels.
From September 2024 onwards we will start the development of an educational innovation for Dutch primary schools to design a dynamic school day (a school day in which sedentary learning is regularly interrupted by moments of physical activity) for their local context. A number of Dutch primary schools already successfully implemented a more dynamic school day. In this qualitative study, we set out to assess the facilitators and barriers that several stakeholders faced during the implementation of the dynamic school day. We also set out to assess preferences of pupils with respect to a more dynamic school day. In preparation of the development phase, we will conduct semi-structured interviews with stakeholders of 3 Dutch primary schools (spring 2024). The interview guide will be based on the MRC guideline for conducting process evaluations of complex interventions. For each school, we seek to include: 1) the physical education teacher, 2) a classroom teacher who finds it easy to organize physical activities during the school day, 3) a classroom teacher who finds it difficult to organize physical activities during the school day, 4) a member of the management team. If relevant, we will also interview other stakeholders involved in the implementation of the dynamic school day. We will present the factors that may facilitate or hinder the implementation of a dynamic school day in the Dutch context. We will use these results to develop a set of potential implementation strategies that can serve as a source of inspiration for other Dutch primary schools in their process to develop a dynamic school day for their local context.
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