Faculty of Physical Education and Recreation, Behavioural Medicine Laboratory, University of Alberta, Alberta, Canada.
Psychol Health Med. 2010 Dec;15(6):729-41. doi: 10.1080/13548506.2010.507771.
Using a Protection Motivation Theory (PMT) framework, this study examined whether factual colon cancer information is a meaningful source of exercise motivation for relatives of patients with colon cancer. One hundred sixty-six inactive relatives were randomly assigned to one of two treatment conditions: PMT group (intervention); and non-PMT group (attention control). At baseline (T1) participants completed demographic information, a questionnaire designed to assess their beliefs toward exercise and colon cancer as well as their exercise intentions. At T2 (one week following T1) participants watched one of two DVD videos that were created for the study. The intervention DVD contained exercise and colon cancer information that was yoked within the four major components of PMT: perceived vulnerability (PV); perceived severity (PS); response efficacy (RE); and self-efficacy (SE), while the attention control DVD contained general diet and cancer information. Immediately following watching the DVD, participants completed the same measures as in T1. Participants assigned to the PMT intervention group showed significant improvement in PV, RE, SE and exercise intentions, whereas participants assigned to the attention control group showed significant improvement only in RE. RE, SE, and PS made significant and unique contributions to prediction of exercise intention. Overall, the results of the present study demonstrate that a single exposure media intervention grounded in a PMT framework can change individuals' exercise and colon cancer beliefs, as well as change their exercise intentions. Implications of these findings and direction for future research are discussed.
本研究运用保护动机理论（PMT）框架，探讨了结肠癌患者亲属获取有关结肠癌的事实信息是否能成为其锻炼的有效动机来源。166 名不活跃的亲属被随机分配到两种治疗条件之一：PMT 组（干预组）和非 PMT 组（对照组）。在基线（T1）时，参与者完成了人口统计学信息、一份旨在评估他们对锻炼和结肠癌的信念以及锻炼意图的问卷。在 T2（T1 后一周）时，参与者观看了为该研究制作的两个 DVD 视频之一。干预 DVD 包含了与 PMT 的四个主要组成部分（感知易感性（PV）、感知严重性（PS）、反应效能（RE）和自我效能（SE））相关的锻炼和结肠癌信息，而对照组 DVD 则包含了一般饮食和癌症信息。观看完 DVD 后，参与者立即完成了与 T1 相同的测量。被分配到 PMT 干预组的参与者在 PV、RE、SE 和锻炼意图方面表现出显著改善，而被分配到对照组的参与者仅在 RE 方面表现出显著改善。RE、SE 和 PS 对预测锻炼意图有显著且独特的贡献。总体而言，本研究结果表明，基于 PMT 框架的单次暴露媒体干预可以改变个体对锻炼和结肠癌的信念，以及改变他们的锻炼意图。讨论了这些发现的意义和未来研究的方向。
