Health4Life: a digital intervention to promote healthy diet and movement behaviours from the start of life: protocol for a hybrid effectiveness-implementation study.
7 affiliations
- 1Department of Medicine Huddinge, Karolinska Institutet, Neo, Huddinge, 141 83, Sweden.
- 2Department of Nursing, CHILD Research Group, School of Health and Welfare, Jönköping University, Jönköping, 551 11, Sweden.
- 3The Child Health Services and Futurum - Academy for Health and Care, Region Jönköping County, Jönköping, 551 85, Sweden.
- 4Deakin Institute for Physical Activity and Nutrition, Deakin University, Geelong, 3220, Australia.
- 5Institute for Health Transformation (IHT), Deakin Health Economics, Deakin University, Geelong, 3220, Australia.
- 6Department of Medicine Huddinge, Karolinska Institutet, Neo, Huddinge, 141 83, Sweden. [email protected].
- 7Deakin Institute for Physical Activity and Nutrition, Deakin University, Geelong, 3220, Australia. [email protected].
Abstract
Background
Globally and in Sweden childhood overweight and obesity remain major public health issues. The first 1000 days (i.e., conception-24 months) has been identified as the period of greatest developmental plasticity, with the maximum capacity to influence health throughout life. As obesity-related behaviours, including excessive screen time and poor dietary habits, have been found to establish in infancy and continue into early childhood, this demonstrates the need for early life health promotion interventions. Therefore, the aim of this study is to evaluate the effectiveness of and explore the implementation of a digital intervention (Health4Life app) designed to support parents in creating healthy diet and movement behaviours from the start of their infant's life, to promote health and prevent overweight and obesity.Methods
A two-arm parallel open-label randomized controlled trial, using a hybrid type I implementation-effectiveness design will be conducted. Families will be recruited at the 6-week routine visit at participating child health service (CHS) centers (n = 504). If parents' consent to participate families will be randomized in a 1:1 ratio into the control or intervention group. Both groups receive standard care; however, the intervention group also receives access to the 16-month Health4Life app-based intervention. Primary outcomes are children's dietary intake (questionnaire), physical activity and sleep (accelerometry), and screen time (questionnaire). Secondary outcomes are children's body mass index z-scores (measured at CHS) and parental self-efficacy for promoting health behaviours (questionnaire). The implementation outcomes being explored are acceptability, appropriateness, and feasibility according to CHS nurses (semi-structured interviews) as well as parental satisfaction and usage of the Health4Life app (questionnaires and semi-structured interviews).Discussion
An important mission of CHS is to support parents in establishing healthy diet and movement behaviours, and the Health4Life app is designed to support this by providing early and tailored guidance to families. If shown to be effective as well as acceptable, appropriate and feasible, Health4Life has the potential to be implemented as a complement to CHS nurses' routine work to promote children's health and development in accordance with the Swedish national child health monitoring program.Trial registration
This trial was registered at Clinicaltrials.gov (ID NCT06798597) on January 29th, 2025.
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BibTeX
@article{alexandrou2026health4life,
title = {{Health4Life: a digital intervention to promote healthy diet and movement behaviours from the start of life: protocol for a hybrid effectiveness-implementation study.}},
author = {Christina Alexandrou and Marie Golsäter and Marie Löf and Kylie D Hesketh and Vicki Brown and Anna Strid and Jennifer Gransten and Henrike Häbel and Christine Delisle Nyström},
journal = {BMC public health},
year = {2026},
month = aug,
doi = {10.1186/s12889-026-28866-0},
url = {https://europepmc.org/article/MED/42958181},
note = {CC BY},
}
RIS
TY - JOUR
TI - Health4Life: a digital intervention to promote healthy diet and movement behaviours from the start of life: protocol for a hybrid effectiveness-implementation study.
AU - Christina Alexandrou
AU - Marie Golsäter
AU - Marie Löf
AU - Kylie D Hesketh
AU - Vicki Brown
AU - Anna Strid
AU - Jennifer Gransten
AU - Henrike Häbel
AU - Christine Delisle Nyström
PY - 2026
DA - 2026/08/03
JO - BMC public health
DO - 10.1186/s12889-026-28866-0
UR - https://europepmc.org/article/MED/42958181
AB - Background Globally and in Sweden childhood overweight and obesity remain major public health issues. The first 1000 days (i.e., conception-24 months) has been identified as the period of greatest developmental plasticity, with the maximum capacity to influence health throughout life. As obesity-related behaviours, including excessive screen time and poor dietary habits, have been found to establish in infancy and continue into early childhood, this demonstrates the need for early life health promotion interventions. Therefore, the aim of this study is to evaluate the effectiveness of and explore the implementation of a digital intervention (Health4Life app) designed to support parents in creating healthy diet and movement behaviours from the start of their infant's life, to promote health and prevent overweight and obesity.Methods A two-arm parallel open-label randomized controlled trial, using a hybrid type I implementation-effectiveness design will be conducted. Families will be recruited at the 6-week routine visit at participating child health service (CHS) centers (n = 504). If parents' consent to participate families will be randomized in a 1:1 ratio into the control or intervention group. Both groups receive standard care; however, the intervention group also receives access to the 16-month Health4Life app-based intervention. Primary outcomes are children's dietary intake (questionnaire), physical activity and sleep (accelerometry), and screen time (questionnaire). Secondary outcomes are children's body mass index z-scores (measured at CHS) and parental self-efficacy for promoting health behaviours (questionnaire). The implementation outcomes being explored are acceptability, appropriateness, and feasibility according to CHS nurses (semi-structured interviews) as well as parental satisfaction and usage of the Health4Life app (questionnaires and semi-structured interviews).Discussion An important mission of CHS is to support parents in establishing healthy diet and movement behaviours, and the Health4Life app is designed to support this by providing early and tailored guidance to families. If shown to be effective as well as acceptable, appropriate and feasible, Health4Life has the potential to be implemented as a complement to CHS nurses' routine work to promote children's health and development in accordance with the Swedish national child health monitoring program.Trial registration This trial was registered at Clinicaltrials.gov (ID NCT06798597) on January 29th, 2025.
SN - 1471-2458
ER -