Department of Psychology and Neuroscience.
Health Psychol. 2021 Dec;40(12):928-939. doi: 10.1037/hea0001023. Epub 2020 Sep 24.
Consistent with the Science of Behavior Change (SOBC) experimental medicine approach, this early phase intervention development study examines the influence of an intervention strategy (exercise training) on a behavioral health outcome (exercise engagement) in the service of addressing a widespread threat to public health (physical inactivity). Physically inactive participants ( = 201) were randomly assigned to one of four exercise training conditions fully crossed on intensity (moderate, vigorous) and duration (short, long). Training occurred over 16-weeks and in-bout assessments of affective response (valence) and ratings of perceived exertion (RPE) were collected during Weeks 1, 4, 8, and 16. Cardiorespiratory fitness (VO₂max) was assessed pre- or postintervention and exercise behavior was assessed at 6-months postintervention follow-up. Across conditions, affective response to exercise did not change, on average, over 16-weeks. Conversely, RPE decreased slightly, on average, over time. Participants completing vigorous intensity exercise reported more negatively valenced affective response and higher RPE, on average, across weeks. Greater total exercise volume completed and greater change in VO₂max were associated with more negatively valenced affective response, on average. Baseline affective response scores were positively associated with exercise minutes at follow-up; however, average affective response scores across the intervention were not associated with minutes of exercise at follow-up. Affective response to exercise did not become more positive in valence over time as a function of training volume or change in VO₂max. Implications for translating these findings to inform future intervention development efforts are discussed. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
与行为改变科学（SOBC）实验医学方法一致，这项早期干预发展研究考察了干预策略（运动训练）对行为健康结果（运动参与）的影响，以解决公众健康面临的广泛威胁（身体活动不足）。身体活动不足的参与者（=201）被随机分配到四种运动训练条件中的一种，这些条件在强度（中等、剧烈）和持续时间（短、长）上完全交叉。训练持续 16 周，在第 1、4、8 和 16 周收集情感反应（效价）和感知用力（RPE）的即时评估。心肺功能（VO₂max）在干预前或干预后进行评估，在 6 个月的干预后随访中评估运动行为。在所有条件下，运动的情感反应平均在 16 周内没有变化。相反，RPE 平均随时间略有下降。完成剧烈强度运动的参与者在整个星期内平均报告更负面的情感反应和更高的 RPE。完成的总运动量更大和 VO₂max 的变化与更负面的情感反应平均相关。基线情感反应得分与随访时的运动分钟数呈正相关；然而，干预过程中的平均情感反应得分与随访时的运动分钟数无关。随着训练量或 VO₂max 的变化，运动的情感反应在效价上并没有变得更积极。讨论了将这些发现转化为告知未来干预发展努力的意义。（PsycInfo 数据库记录（c）2022 APA，保留所有权利）。
