Department of Psychology, Freie Universität Berlin, Berlin, Germany.
Psychol Health Med. 2012;17(4):488-98. doi: 10.1080/13548506.2011.608809. Epub 2011 Oct 18.
Many individuals are motivated to improve their physical activity levels, but often fail to act upon their intention. Interventions fostering volitional strategies, such as action planning, coping planning, and self-efficacy beliefs, can help to translate intentions into behavior. This study examines the effectiveness and the mechanisms of a combined planning and self-efficacy intervention to promote physical activity among motivated individuals. Participants (N = 883) were randomly assigned to the intervention or to a waiting-list control condition. Multivariate analysis of variance revealed that the intervention resulted in significantly more physical activity, higher levels of action planning, coping planning, and volitional self-efficacy beliefs (p < 0.01). In addition, multiple mediation analysis showed that action planning, coping planning, and volitional self-efficacy mediate between the intervention and physical activity. The study shows that the intervention successfully fostered physical activity and unfolds the underlying self-regulatory mechanisms of the intervention's effectiveness.
许多人都有提高身体活动水平的动机，但往往未能将其意图付诸行动。促进意志策略的干预措施，如行动计划、应对计划和自我效能信念，可以帮助将意图转化为行为。本研究旨在检验一种综合计划和自我效能干预措施在促进有动机个体身体活动方面的有效性和作用机制。参与者（N=883）被随机分配到干预组或等待名单对照组。多变量方差分析显示，干预组的身体活动量显著增加，行动计划、应对计划和意志自我效能信念水平也更高（p<0.01）。此外，多重中介分析表明，行动计划、应对计划和意志自我效能在干预与身体活动之间起中介作用。该研究表明，该干预措施成功地促进了身体活动，并揭示了干预措施有效性的潜在自我调节机制。
