Wyse Rebecca, Wolfenden Luke, Bisquera Alessandra
University of Newcastle, Callaghan, NSW, Australia.
Hunter New England Population Health, Hunter New England Local Health District, Wallsend, NSW, 2287, Australia.
Int J Behav Nutr Phys Act. 2015 Sep 17;12:118. doi: 10.1186/s12966-015-0281-6.
The home food environment can influence the development of dietary behaviours in children, and interventions that modify characteristics of the home food environment have been shown to increase children's fruit and vegetable consumption. However to date, interventions to increase children's fruit and vegetable consumption have generally produced only modest effects. Mediation analysis can help in the design of more efficient and effective interventions by identifying the mechanisms through which interventions have an effect. This study aimed to identify characteristics of the home food environment that mediated immediate and sustained increases in children's fruit and vegetable consumption following the 4-week Healthy Habits telephone-based parent intervention.
Analysis was conducted using 2-month (immediate) and 12-month (sustained) follow-up data from a cluster randomised control trial of a home food environment intervention to increase the fruit and vegetable consumption of preschool children. Using recursive path analysis, a series of mediation models were created to investigate the direct and indirect effects of immediate and sustained changes to characteristics of the home food environment (fruit and vegetable availability, accessibility, parent intake, parent providing behaviour, role-modelling, mealtime eating practices, child feeding strategies, and pressure to eat), on the change in children's fruit and vegetable consumption.
Of the 394 participants in the randomised trial, 357 and 329 completed the 2- and 12-month follow-up respectively. The final mediation model suggests that the effect of the intervention on the children's fruit and vegetable consumption was mediated by parent fruit and vegetable intake and parent provision of these foods at both 2- and 12-month follow-up.
Analysis of data from the Healthy Habits trial suggests that two environmental variables (parental intake and parent providing) mediate the immediate and sustained effect of the intervention, and it is recommended these variables be targeted in subsequent home food environment interventions to bring about immediate and sustained changes in child fruit and vegetable intake.
ACTRN12609000820202 .
家庭食物环境会影响儿童饮食行为的发展，改变家庭食物环境特征的干预措施已被证明能增加儿童的水果和蔬菜摄入量。然而，迄今为止，增加儿童水果和蔬菜摄入量的干预措施通常只产生了适度的效果。中介分析可以通过确定干预措施产生效果的机制，帮助设计更高效、有效的干预措施。本研究旨在确定家庭食物环境的特征，这些特征介导了基于电话的为期4周的健康习惯家长干预后儿童水果和蔬菜摄入量的即时和持续增加。
使用一项家庭食物环境干预的整群随机对照试验的2个月（即时）和12个月（持续）随访数据进行分析，该干预旨在增加学龄前儿童的水果和蔬菜摄入量。使用递归路径分析，创建了一系列中介模型，以研究家庭食物环境特征（水果和蔬菜的可得性、可及性、家长摄入量、家长提供行为、榜样作用、用餐时的饮食行为、儿童喂养策略和进食压力）的即时和持续变化对儿童水果和蔬菜摄入量变化的直接和间接影响。
在随机试验的394名参与者中，分别有357名和329名完成了2个月和12个月的随访。最终的中介模型表明，在2个月和12个月的随访中，干预对儿童水果和蔬菜摄入量的影响是由家长的水果和蔬菜摄入量以及家长对这些食物的提供介导的。
对健康习惯试验数据的分析表明，两个环境变量（家长摄入量和家长提供）介导了干预的即时和持续效果，建议在随后的家庭食物环境干预中针对这些变量，以使儿童水果和蔬菜摄入量产生即时和持续的变化。
ACTRN12609000820202 。
Zotero 插件
