Examining the interdependence of parent-child dyads: Effects on weight loss and maintenance

Area of Science:

• Obesity research
• Family health interventions
• Behavioral science

Background:

• Childhood and parental overweight/obesity are significant public health concerns.
• Family-based treatment (FBT) is a common approach for managing weight in parent-child dyads.
• Understanding the interplay of weight changes within families is crucial for effective interventions.

Purpose of the Study:

• To model the interdependence of weight changes in parent-child dyads during family-based treatment.
• To investigate the actor and partner effects on weight status over time.
• To examine how different maintenance interventions influence these weight dynamics.

Main Methods:

• 172 parent-child dyads with overweight/obesity participated in 4 months of FBT.
• Participants were randomized to Social Facilitation Maintenance (SFM)-high dose, SFM-low dose, or control groups for 8 months.
• Structural equation modeling (actor-partner interdependence model) analyzed weight changes at 0, 4, and 12 months.

Main Results:

• Significant actor effects were observed for both parents and children over time.
• Child's weight status significantly predicted parent's BMI at 4 and 12 months (partner effect).
• The type of maintenance intervention moderated the actor and partner effects on weight.

Conclusions:

• Children's weight changes may act as a catalyst for parents' environmental and behavioral modifications.
• These findings highlight the interconnectedness of weight management within families.
• Tailoring maintenance strategies based on observed dyadic weight dynamics could enhance treatment outcomes.