身体活动的采用和维持：心理干预的中介分析。,Health Psychology

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身体活动的采用和维持：心理干预的中介分析。
Health Psychology ( IF 3.1 ) Pub Date : 2022-09-01 , DOI: 10.1037/hea0001206
Sarah Paganini ₁ , Christina Ramsenthaler ₁ , Ramona Wurst ₁ , Reinhard Fuchs ₁

Affiliation

目的分析有效的基于心理群体的促进身体活动干预（基于动机和意志理论；MoVo-LISA）的认知中介过程，并测试在身体活动行为改变的采用和维持阶段不同的潜在干预机制。方法在一项随机对照试验中，N = 202 名冠心病患者被随机分配到基于组的 MoVo-LISA 干预组或对照组（照常治疗）。主要结果是身体活动（以每周分钟数为单位，显着组差异：治疗后：d = 1.03；12 个月随访：d = .57）。潜在的中介变量是自我效能、结果预期、意图强度、自我一致性、行动计划和障碍管理。SPSS AMOS v. 中纵向数据的中介分析进行了 24 次。结果干预成功地修改了在采用和/或维持阶段检查的大多数认知变量，除了自我一致性。意图强度和自我一致性是两个阶段行为变化的重要预测因素。研究结果表明，观察到的对身体活动行为的干预效果仅部分通过动机变量自我效能和结果预期介导。结论结果有助于打开干预背后过程的“黑匣子”，并表明 MoVo-LISA 的干预效果部分通过指定的认知变量介导。本研究强调了采用和维护阶段动机变量（意图强度和自我一致性）的相关性，并导致相关的干预设计含义。尽管如此，这两个阶段的区别可能有助于通过更加关注那些在行为改变过程中的某个时刻至关重要的认知参数来改进干预计划。（PsycInfo 数据库记录 (c) 2022 APA，保留所有权利）。

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Adoption and maintenance of physical activity: Mediation analysis of a psychological intervention.

OBJECTIVE To analyze the cognitive mediation processes of an effective psychological group-based intervention promoting physical activity (based on motivational and volitional theories; MoVo-LISA) and to test for different underlying intervention mechanisms in the adoption and maintenance phase of physical activity behavior change. METHOD In an RCT, N = 202 patients with coronary heart disease were randomly allocated to the group-based MoVo-LISA intervention or a control group (treatment-as-usual). Primary outcome was physical activity (in minutes per week, significant group differences: posttreatment: d = 1.03; 12-months follow-up: d = .57). Potential mediator variables were self-efficacy, outcome expectations, intention strength, self-concordance, action planning and barrier management. A mediation analysis of longitudinal data in SPSS AMOS v.24 was conducted. RESULTS The intervention was successful in modifying most of the examined cognitive variables in the adoption and/or the maintenance phase, with exception of self-concordance. Intention strength and self-concordance were significant predictors of behavior change in both phases. Findings suggest that the observed intervention effects on physical activity behavior were only partially mediated through the motivational variables self-efficacy and outcome expectation. CONCLUSIONS The results contribute to opening "the black box" of processes behind an intervention and show that intervention effects of MoVo-LISA are partially mediated through the specified cognitive variables. The relevance of motivational variables (intention strength and self-concordance) in the adoption and maintenance phases is highlighted in this study and leads to relevant intervention design implications. Nevertheless, the differentiation of the two phases might help to improve intervention programs through a stronger focus on those cognitive parameters that are critical at a certain point in the behavior change process. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

更新日期：2022-08-26

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