Gratton Lucy, Povey Rachel, Clark-Carter David
Centre for Health Psychology, Faculty of Health and Sciences, Staffordshire University, UK.
Br J Health Psychol. 2007 Nov;12(Pt 4):639-50. doi: 10.1348/135910706X171504.
This study compared a motivational intervention based on the Theory of Planned Behaviour (TPB) with a volitional intervention based on implementation intentions.
The study employed a quantitative longitudinal questionnaire design involving two waves of data collection.
Participants (N=198) were randomly allocated to a control group or one of two intervention groups. TPB variables, and fruit and vegetable consumption were assessed at the beginning of the study (time 1) and 2 weeks later (time 2). Experimental group A formed an implementation intention, about how, when and where they could eat five portions a day, whilst experimental group B stated ways they could overcome motivational barriers to eating five portions a day.
Both interventions were found to increase fruit and vegetable consumption significantly, although only the volitional intervention demonstrated a significant increase in fruit and vegetable consumption over the control intervention.
The present study found support for two interventions in increasing fruit and vegetable consumption in children. These findings are encouraging regarding the use of these types of interventions within schools to improve children's eating behaviour.
本研究比较了基于计划行为理论（TPB）的动机干预与基于实施意图的意志干预。
该研究采用定量纵向问卷调查设计，涉及两轮数据收集。
参与者（N = 198）被随机分配到对照组或两个干预组之一。在研究开始时（时间1）和2周后（时间2）评估TPB变量以及水果和蔬菜的摄入量。实验组A形成了关于如何、何时以及何地每天能吃五份水果和蔬菜的实施意图，而实验组B阐述了他们可以克服每天吃五份水果和蔬菜的动机障碍的方法。
发现两种干预措施均显著增加了水果和蔬菜的摄入量，尽管只有意志干预显示出与对照干预相比水果和蔬菜摄入量有显著增加。
本研究发现两种干预措施在增加儿童水果和蔬菜摄入量方面得到了支持。这些发现对于在学校内使用这类干预措施来改善儿童饮食行为而言是令人鼓舞的。
