A collaborative network trial to evaluate the effectiveness of implementation strategies to maximize adoption of a school-based healthy lunchbox program: a study protocol

Introduction

An important impediment to the large-scale adoption of evidence-based school nutrition interventions is the lack of evidence on effective strategies to implement them. This paper describes the protocol for a "Collaborative Network Trial" to support the simultaneous testing of different strategies undertaken by New South Wales Local Health Districts to facilitate the adoption of an effective school-based healthy lunchbox program ('SWAP IT'). The primary objective of this study is to assess the effectiveness of different implementation strategies to increase school adoption of the SWAP across New South Wales Local Health Districts.

Methods

Within a Master Protocol framework, a collaborative network trial will be undertaken. Independent randomized controlled trials to test implementation strategies to increase school adoption of SWAP IT within primary schools in 10 different New South Wales Local Health Districts will occur. Schools will be randomly allocated to either the intervention or control condition. Schools allocated to the intervention group will receive a combination of implementation strategies. Across the 10 participating Local Health Districts, six broad strategies were developed and combinations of these strategies will be executed over a 6 month period. In six districts an active comparison group (containing one or more implementation strategies) was selected. The primary outcome of the trial will be adoption of SWAP IT, assessed via electronic registration records captured automatically following online school registration to the program. The primary outcome will be assessed using logistic regression analyses for each trial. Individual participant data component network meta-analysis, under a Bayesian framework, will be used to explore strategy-covariate interactions; to model additive main effects (separate effects for each component of an implementation strategy); two way interactions (synergistic/antagonistic effects of components), and full interactions.

Discussion

The study will provide rigorous evidence of the effects of a variety of implementation strategies, employed in different contexts, on the adoption of a school-based healthy lunchbox program at scale. Importantly, it will also provide evidence as to whether health service-centered, collaborative research models can rapidly generate new knowledge and yield health service improvements.

Clinical trial registration

This trial is registered prospectively with the Australian New Zealand Clinical Trials Registry (ACTRN12623000558628).

Feasibility, acceptability and potential efficacy of a virtual physical activity program in primary and secondary schools in New South Wales, Australia: A quasi-experimental study

ISSUE ADDRESSED

Child and youth participation in physical activity (PA) is fundamental for healthy development and obesity prevention. Government policy requires schools to offer 150 minutes of PA each week, however compliance is low. Race around Australia (RAA) is a New South Wales (NSW) Department of Education, virtual PA program aimed at assisting schools in meeting the PA guidelines.

METHODS

A pre- and post-intervention, quasi-experimental study was conducted using a mixed-methods approach comprising teacher interviews, a student questionnaire and a 1.6 kilometre (km) timed run. Data were collected from April to September 2021 among students and teachers in Grades 5 to 8, from 10 schools in NSW, Australia.

RESULTS

The analytical sample included data from 918 students and 17 teachers. The RAA program was deemed feasible and acceptable in primary schools, whereas there were several systemic and intrapersonal barriers to implementation success for secondary schools. In primary schools, RAA increased PA opportunities and the 1.6 km timed runs revealed a statistically significant treatment by time effect in favour of the intervention group for cardiorespiratory fitness (-36.91 seconds, 95% CI [-63.14, -10.68], P = .006).

CONCLUSIONS

RAA has demonstrated feasibility and potential efficacy in improving cardiorespiratory fitness. We recommend that program refinement be made to deliver an intervention that addresses the unique barriers of the secondary school setting through a multi-level ecological approach. SO WHAT?: Despite evident benefits, implementation of PA initiatives in the school setting reveals many challenges. Stronger consideration of the Health Promotion with Schools Framework is evidently needed.

Creating active playgrounds in primary schools

ISSUE ADDRESSED

To identify a model for a process that will support schools to implement environmental modifications in playgrounds aimed at increasing physical activity.

METHODS

Kidsafe NSW (Playground Advisory Unit) was commissioned by the former Illawarra Health Promotion Unit (IHPU) to develop playground concept designs, safety audits and detailed reports for three primary schools. Each report contained several environmental recommendations to increase participation in physical activity. During this study one school was destroyed by fire. The former IHPU supported the remaining two schools to implement environmental modifications for increasing physical activity through a process of meetings and interviews.

RESULTS

Principals of both schools said they found the process to be valuable and it encouraged them to implement changes to their school environment for the purpose of increasing physical activity. School staff and the Parents and Friends Association felt that having a report from Kidsafe NSW increased the credibility and importance of the recommendations. Both schools made several changes to their playgrounds that were recommended in the report.

CONCLUSIONS

The process of providing a Kidsafe NSW playground report, as well as support through meetings and interviews, appears to promote environmental change in schools.