%0 Journal Article
%@ 2561-6722
%I JMIR Publications
%V 5
%N 3
%P e36770
%T Dose-Response Relationship of a Blended In-Person and Online Family-Based Childhood Obesity Management Program: Secondary Analysis of a Behavior Intervention
%A Liu,Sam
%A Smith,Nicholas
%A Nuss,Kayla
%A Perdew,Megan
%A Adiputranto,Dimas
%A Naylor,Patti-Jean
%+ School of Exercise Science, Physical and Health Education, University of Victoria, PO Box 1700 STN CSC, Victoria, BC, V8W 2Y2, Canada, 1 2507218392, samliu@uvic.ca
%K engagement
%K dose response
%K childhood obesity
%K web-based intervention
%K child
%K obesity
%K weight
%K web based
%K intervention
%K family
%K families
%K lifestyle
%K parent
%K parental support
%K healthy eating
%K family support
%K physical activity
%K diet
%K exercise
%K fitness
%K online portal
%D 2022
%7 5.7.2022
%9 Original Paper
%J JMIR Pediatr Parent
%G English
%X Background: The Early Intervention Program (EIP) was a 10-week, blended, in-person and online lifestyle intervention for families with children who were off the healthy weight trajectory. The engagement pattern and the dose response of EIP have not been examined. Objective: The aims of this paper are to examine families’ engagement patterns with the EIP and to evaluate the dose-response relationship between EIP engagement patterns and physical activity and healthy eating–related outcomes at 10 weeks. Methods: Families with children (8-12 years old) who are off the healthy weight trajectory (child BMI ≥85th percentile for age and sex) were recruited. Pre- and postintervention questionnaires assessed child lifestyle behaviors, parental support behaviors, family lifestyle habits, as well as parental physical activity and healthy-eating identity. Hierarchical cluster analysis of both in-person and online components was used to classify engagement patterns. Regression analysis assessed differences in outcomes by engagement groups. Results: Two distinct clusters of engagement groups were identified (N=66), which were in-person (IP; n=40, 61%) and in-person + online (IP+; n=26, 39%) engagement. Relative to the IP group at week 10, IP+ showed a greater child moderate-to-vigorous physical activity level (1.53, SD 0.56; P=.008), child physical activity confidence (1.04, SD 0.37; P=.007), parental support for child physical activity (5.54, SD 2.57; P=.04) and healthy eating (2.43, SD 1.16; P=.04), family habits for physical activity (3.02, SD 1.50; P=.049) and healthy eating (3.95, SD 1.84; P=.04), and parental identity for physical activity (2.82, SD 1.19; P=.02). Conclusions: The online EIP portal complemented the in-person sessions. Additional engagement with the portal was associated with greater improvements in child physical activity and parental support behaviors, habits, and identity for physical activity. 
%M 35787514
%R 10.2196/36770
%U https://pediatrics.jmir.org/2022/3/e36770
%U https://doi.org/10.2196/36770
%U http://www.ncbi.nlm.nih.gov/pubmed/35787514