Using the Behaviour Change Wheel and Theoretical Domains Framework to identify factors related to increasing fruit and vegetable consumption in children to guide future intervention development.

Abstract

Objective: This study used the Behaviour Change Wheel (BCW) and Theoretical Domains Framework (TDF) to identify parental factors that are associated with increasing their child's fruit and vegetable consumption. The information gathered enabled a behavioural diagnosis and the identification of intervention functions to increase fruit and vegetable consumption in children.

Design: A qualitative design using open-ended online survey methodology was utilised.

Setting: United Kingdom.

Participants: Twenty-eight parents of primary school-aged children (4-11 years) aged 29-51 years participated.

Results: Thematic and summative analysis identified skills in preparation and cooking, awareness of and desire to increase fruit and vegetable intake, knowledge of the recommendations and better health for their child as the main facilitators. The main barriers were time and financial constraints, their child's food preferences and refusal to eat fruit and vegetables, negative role modelling from parents and grandparents and beliefs that fruit and vegetable intake will increase with age. For behaviour change to occur, 'knowledge', 'social influences', 'environmental context and resources', 'beliefs about consequences' and 'beliefs about capabilities' need to be altered.

Conclusions: Novel findings suggest that future intervention development should focus on parental beliefs and skills around how to increase fruit and vegetable consumption as their child ages and expanding parental knowledge on the benefits of fruit and vegetable consumption such as mental and future health. The use of the TDF and BCW identified appropriate intervention functions that will guide future behaviour change techniques, modes of delivery and policy categories that best target increasing children's fruit and vegetable consumption.