Domke Antonia, Keller Jan, Heuse Silke, Wiedemann Amelie U, Lorbeer Noemi, Knoll Nina
Department of Education and Psychology, Division Health Psychology, Freie Universität Berlin, Berlin, Germany.
Department of Psychology, University of Applied Sciences Europe, Berlin, Germany.
Appl Psychol Health Well Being. 2021 May;13(2):377-393. doi: 10.1111/aphw.12254. Epub 2021 Feb 4.
Action planning interventions can effectively promote fruit and vegetable (FV) consumption, but not much is known about the day-to-day translation of intervention planning into action. In this randomized controlled trial, immediate intervention effects of a very brief planning intervention on FV consumption during the following 13 days were investigated. After a 13-day pre-intervention diary, N = 206 participants (aged 19-66 years) were randomly allocated to a waiting-list control condition or a planning condition, where they formed one FV plan. Participants from both conditions completed a 13-day post-intervention diary. Self-reported daily FV consumption, FV-specific self-efficacy, and action control were assessed. Segmented linear mixed models estimating a discrete change (i.e. "jump") between diary phases showed a positive "jump" of FV intake and self-efficacy in the planning condition when compared to the control condition. For action control, such effects were not observed. Changes in study variables throughout the post-intervention phase did not differ between both conditions. Present findings extend previous evidence on action planning interventions by showing that increases in self-regulatory (i.e. self-efficacy) and behavioral (i.e. FV intake) outcomes can occur very rapidly and already on the first day for which behavioral increases were planned.
行动计划干预措施能够有效促进水果和蔬菜（FV）的消费，但对于如何将干预计划日常转化为实际行动，我们了解得并不多。在这项随机对照试验中，我们研究了一项非常简短的计划干预措施对随后13天内FV消费的即时干预效果。在进行了为期13天的干预前日记记录后，N = 206名参与者（年龄在19 - 66岁之间）被随机分配到等待名单控制组或计划组，在计划组中他们制定了一个FV计划。两组参与者都完成了为期13天的干预后日记记录。评估了自我报告的每日FV消费量、特定于FV的自我效能感和行动控制能力。分段线性混合模型估计了日记阶段之间的离散变化（即“跳跃”），结果显示，与控制组相比，计划组的FV摄入量和自我效能感有正向“跳跃”。对于行动控制，未观察到此类效果。在干预后阶段，研究变量的变化在两组之间没有差异。当前的研究结果扩展了之前关于行动计划干预措施的证据，表明自我调节（即自我效能感）和行为（即FV摄入量）结果的增加可能非常迅速，并且在计划行为增加的第一天就已经出现。
