From leadership research to district action: Understanding school frontline workers’ early implementation behavior: insights from the generation healthy kids study in Denmark

AI-assisted editorial implementation guide. Proposed district actions are separate from the original authors’ findings and recommendations. Independent peer review of this guide is not asserted.

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Evidence and transfer

Education-related source: verify which participants, institutions and outcomes were actually studied before district adoption. Source publication type: research-article. License and identity checks do not establish study quality or causality.

Original authors’ abstract, reproduced under the source license:

Abstract Introduction Childhood obesity is a growing global public health issue, with significant implications for children’s physical and psychological well-being. Schools offer a structured environment for implementing health-promoting interventions to address this challenge. This study examines how organizational conditions within schools influence frontline workers’ (e.g., teachers and pedagogic staff) early implementation behavior in a school-based health intervention. Insights aim to inform strategies for enhancing the sustainability and effectiveness of such programs. Methods The study utilizes a qualitative design, conducting 11 focus group interviews across 11 of the 12 intervention schools participating in the Generation Healthy Kids (GHK) intervention program in Denmark. Using the Consolidated Framework for Implementation Research (CFIR) and the COM-B Model for Behavior Change, the interviews explored organizational factors shaping frontline workers’ capabilities, opportunities, and motivation for implementing GHK components. Thematic analysis, guided by predefined theoretical constructs, was applied to identify key patterns in the data. Results The findings highlight organizational conditions within schools as critical to frontline workers’ early implementation behavior. Capability was linked to training and resources, though time constraints hindered effective application. Opportunity was shaped by structural factors such as limited access to facilities, causing logistical challenges. Motivation was influenced by alignment with existing workflows, reflective beliefs about the program’s relevance, and tension for change due to perceived pupil needs. Leadership emerged as a cross-cutting factor, with engaged leaders enhancing implementation through active support and resource coordination. Discussion The study underscores the interplay between organizational conditions and frontline workers’ behaviors in implementing health programs. Addressing logistical barriers, fostering supportive leadership, and ensuring alignment with school priorities are essential for successful implementation. These findings highlight the need for adaptive, school-specific implementation strategies to sustain health-promoting interventions like GHK and suggest stakeholder engagement to further optimize implementation processes. Keywords: implementation research, school-based program, qualitative, frontline workers, consolidated framework for implementation research, COM-B

Study methods

The Generation Healthy Kids study (GHK) is a comprehensive school intervention program designed to promote healthy weight development among Danish children aged 6–11, running over two school years. GHK is a cluster-randomized trial conducted across 23 schools (12 intervention and 11 control schools) in Denmark (30), containing a multi-setting, multi-component intervention that utilizes a whole-systems approach. Across the intervention schools, located in various regions of Denmark, GHK implements structural and educational components across four domains that influence childhood healthy weight and wellbeing: diet, physical activity, screen media use, and sleep habits. These four behavioral components are individually well-established as critical factors influencing childhood overweight, obesity, and overall health and wellbeing (31–34). In terms of diet, a main component is free school lunch provided four days a week. The school lunch is aligned with the national Food-based Dietary Guidelines and the Nordic nutrition recommendations and designed to improve children’s food courage and liking of healthy foods. Teachers and pedagogic staff act as meal hosts, and food literacy exercises are incorporated into classroom activities. The physical activity component includes three 40-minute weekly sessions of organized vigorous activity, based on the FIT FIRST 10 concept (35), alongside efforts to promote active play during recess and in after-school settings. To address screen media use and sleep practices, teachers and pedagogic staff guide pupils through classroom exercises, encouraging them to reflect on their habits, supplemented with 3 parent workshops delivered by the research team at each school.

Limitations

While the study provides valuable insights, it is not without limitations. One being the reliance on self-reported data from frontline workers, which may be subject to social desirability bias or may not fully capture the complexities of the implementation process (62). Additionally, the focus on a specific program within a particular cultural context may limit the generalizability of the findings to other settings or populations. The study’s cross-sectional design also does not allow for an examination of how the implementation processes and outcomes evolve over time, which could provide a deeper understanding of the factors influencing sustained implementation. Furthermore, fidelity to the intervention components has not yet been systematically assessed or reported. These data are planned as part of the broader GHK evaluation (30) but are not yet available.

A 90-day district inquiry

Days 1–15 · Appraise. Read the source methods, recruitment, comparator, outcomes and limitations. Record how the study setting differs from your district and which claim the design can support.
Days 16–30 · Design. Choose one school improvement question with teachers. Protect a short shared planning cycle, agree an instructional change and use a common rubric for examining student work. Agree participation, privacy protections, baseline and stopping rules before starting.
Days 31–60 · Observe. Collect the pre-agreed measures, keep a log of implementation changes and invite confidential voluntary feedback. Preserve existing support for staff and learners.
Days 61–90 · Decide. Review implementation fidelity, teacher time and independently scored student work against a recorded baseline. Examine access differences and competing explanations before attributing changes to leadership. Make a dated decision to stop, revise or extend the inquiry.

Board decision brief

Present the local problem, source setting, evidence limits, intervention, responsible owner, total cost, measured changes and uncertainty. Separate staff perceptions, implementation measures and student learning outcomes.

Attribution and reuse

Jonas Vestergaard Nielsen; Sofie Koch; Tine Hyldahl Henriksen; Rikke Fredenslund Krølner; Line Lund; Louise Ayoe Sparvath Brautsch; Line Kattai Ulrikkeholm; Camilla Trab Damsgaard; Malte Nejst Larsen; Thomas Skovgaard. Understanding school frontline workers’ early implementation behavior: insights from the generation healthy kids study in Denmark. Frontiers in Sports and Active Living (2025-06-02). https://doi.org/10.3389/fspor.2025.1534123

Prepared 2026-11-07. Source authorship and DOI are preserved. The abstract and source passages are attributed extracts; this editorial guide is offered under the same CC BY 4.0 license.