School of Psychology, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood, VIC 3125, Australia.
School of Psychology and Speech Pathology, Curtin University, Perth, WA 6845, Australia.
Appetite. 2014 Jul;78:68-75. doi: 10.1016/j.appet.2014.03.006. Epub 2014 Mar 20.
Young adults are less likely than other adults to consume fruit and vegetables. Fresh Facts is a theory of planned behaviour based intervention designed to promote fruit and vegetable consumption. The present study sought to evaluate Fresh Facts using a randomised controlled trial. Australian young adults (n = 162) were allocated to the Fresh Facts intervention or to the control group in 2011. Intervention participants received automated email messages promoting fruit and vegetable consumption every 3 days over the course of the 1 month intervention. Messages targeted attitude, subjective norm, and perceived behavioural control. Theory of planned behaviour variables and fruit and vegetable intake were measured at baseline and post-intervention (Day 30). Significant increases in attitude and subjective norm relative to control were found among Fresh Facts participants. However, intention, perceived behavioural control and fruit and vegetable consumption did not change as a result of the intervention. Changes in intention reported by each participant between baseline and follow-up were not correlated with corresponding changes in fruit and vegetable consumption. Fresh Facts was not successful in increasing fruit and vegetable consumption. Current evidence does not support the use of the theory of planned behaviour in the design of interventions to increase fruit and vegetable intake in this population.
年轻人比其他成年人更不可能食用水果和蔬菜。Fresh Facts 是一种基于计划行为理论的干预措施，旨在促进水果和蔬菜的消费。本研究旨在使用随机对照试验评估 Fresh Facts。2011 年，澳大利亚的年轻成年人（n=162）被分配到 Fresh Facts 干预组或对照组。干预组参与者在 1 个月的干预过程中，每 3 天会收到一封自动电子邮件，以促进水果和蔬菜的消费。信息针对态度、主观规范和感知行为控制。在基线和干预后（第 30 天）测量了计划行为理论变量和水果和蔬菜的摄入量。与对照组相比，Fresh Facts 参与者的态度和主观规范显著增加。然而，干预并没有导致意图、感知行为控制和水果和蔬菜的消费发生变化。每个参与者在基线和随访之间报告的意图变化与相应的水果和蔬菜消费变化没有相关性。Fresh Facts 并没有成功增加水果和蔬菜的摄入量。目前的证据不支持在设计干预措施以增加该人群的水果和蔬菜摄入量时使用计划行为理论。
