BACKGROUND Previous studies have shown affective and physiological states in response to exercise as predictors of daily exercise, yet little is known about the mechanism underlying such effects. PURPOSE To examine the mediating effects of self-efficacy and outcome expectancy on the relationships between affective and physiological responses to exercise and subsequent exercise levels in endometrial cancer survivors. METHODS Ecological momentary assessment (EMA) surveys were delivered up to eight 5- to 7-day periods over 6 months. Participants (n = 100) rated their affective and physiological states before and after each exercise session (predictors) and recorded their self-efficacy and outcome expectancy each morning (mediators). Exercise (outcome) was based on self-reported EMA surveys and accelerometer measures. A 1-1-1 multilevel mediation model was used to disaggregate the within-subject (WS) and between-subject (BS) effects. RESULTS At the WS level, a more positive affective state after exercise was associated with higher self-efficacy and positive outcome expectation the next day, which in turn was associated with higher subsequent exercise levels (ps < .05). At the BS level, participants who typically had more positive affective and experienced less intense physiological sensation after exercise had higher average self-efficacy, which was associated with higher average exercise levels (ps < .05). CONCLUSIONS In endometrial cancer survivors, affective experience after exercise, daily self-efficacy and positive outcome expectation help explain the day-to-day differences in exercise levels within-person. Findings from this study highlight potentials for behavioral interventions that target affective experience after exercise and daily behavioral cognitions to promote physical activity in cancer survivors' everyday lives.

中文翻译：

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一项生态矩评估研究，研究自我效能和预期结果作为子宫内膜癌幸存者的情感和生理反应及锻炼的中介。

背景技术先前的研究已经显示出对运动的情感和生理状态作为日常运动的预测指标，但是对于这种作用的潜在机制知之甚少。目的探讨子宫内膜癌幸存者自我效能和预期结果对运动的情感和生理反应与随后的运动水平之间的关系的中介作用。方法生态瞬时评估（EMA）调查在六个月内进行了多达8个5至7天的时间。参与者（n = 100）在每次锻炼之前和之后对他们的情感和生理状态进行评估（预测者），并每天早晨记录他们的自我效能和预期结果（调解者）。锻炼（结果）基于自我报告的EMA调查和加速计测量。使用1-1-1多层调解模型来分解主题内（WS）和主题间（BS）的效果。结果在WS级别，运动后情绪状态更积极与第二天更高的自我效能感和积极的预期结果相关，而这又与更高的后续运动水平相关（ps <.05）。在BS级别，运动后通常具有更积极的情感和较少的剧烈生理感觉的参与者具有较高的平均自我效能感，这与较高的平均运动水平相关（ps <.05）。结论在子宫内膜癌幸存者中，运动后的情感体验，每日自我效能和积极的结局期望有助于解释人体内运动水平的日常差异。