Bray Steven R, Harris Sheereen
McMaster University, Canada.
University of Waterloo, Canada.
Psychol Sport Exerc. 2025 May;78:102805. doi: 10.1016/j.psychsport.2025.102805. Epub 2025 Jan 10.
Although intention is a strong predictor of moderate-to-vigorous intensity physical activity (MVPA), several factors moderate the intention-behavior relationship. People experience goal conflict when one or more of their goals makes it more difficult to pursue other goals. Goal conflict was examined as a moderator of the intention-behavior relation using data from ecological momentary assessments and accelerometer-derived estimates of MVPA. Participants (N = 100; 22 males) wore an accelerometer and responded to digital surveys assessing MVPA intentions and goal conflict up to four times daily for seven consecutive days. MVPA in the 180-min epoch following each survey prompt was recorded. Multilevel modelling was used to analyze the data using the disaggregated between- and within-person effects. Results revealed an intention-behavior gap of 30% and significant within-person effects for intention and goal conflict. Within-person goal conflict moderated the intention-behavior relationship such that when people had stronger intentions to be active compared to their average level of intention, they engaged in more MVPA; and when goal conflict was higher, compared to their average level of goal conflict, people engaged in less MVPA. Findings suggest experiencing higher goal conflict about engaging in MVPA thwarts people's abilities to follow through with their intentions to be active throughout the day.
尽管意图是中等到高强度身体活动（MVPA）的有力预测指标，但有几个因素会调节意图与行为之间的关系。当一个或多个目标使追求其他目标变得更加困难时，人们就会经历目标冲突。本研究使用生态瞬时评估数据和加速度计得出的MVPA估计值，将目标冲突作为意图-行为关系的调节因素进行了检验。参与者（N = 100；22名男性）佩戴加速度计，并对数字调查问卷做出回应，该问卷评估MVPA意图和目标冲突，连续七天每天最多进行四次。记录每次调查提示后180分钟时间段内的MVPA。使用多水平模型，通过分解个体间和个体内效应来分析数据。结果显示意图与行为之间存在30%的差距，并且意图和目标冲突存在显著的个体内效应。个体内目标冲突调节了意图-行为关系，即当人们的活动意图比其平均意图水平更强时，他们会进行更多的MVPA；而当目标冲突比其平均目标冲突水平更高时，人们进行的MVPA则更少。研究结果表明，在进行MVPA方面经历更高的目标冲突会阻碍人们贯彻全天保持活跃的意图的能力。
