The goal of the present study was to examine naturalistic associations between body satisfaction and physical activity (PA) among women in midlife. Women 40-60 years of age with cardiovascular risk factors (e.g., hypertension; N = 75; Mage = 51.63) responded to five surveys per day for 10 days while accelerometer-derived PA measurements were collected continuously. PA parameters included cognitive determinants (PA motivation and intentions) and accelerometer-measured PA behavior (sedentary behavior, light-intensity PA, and moderate to vigorous PA). Multilevel models indicated that associations between body satisfaction and everyday PA differed across PA determinants, time frames (concurrent and prospective), and levels (momentary, daily, and person). For example, positive bidirectional associations were identified between women's daily body satisfaction and PA motivation, whereas greater momentary light-intensity PA (but not moderate to vigorous PA) was unidirectionally associated with greater body satisfaction at a subsequent prompt. These findings provide insight into how associations between body satisfaction and PA unfold in the daily lives of women in midlife and highlight the complexities of these associations.

中文翻译：

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身体满意度与体力活动之间自然关联的时间序列：一项针对心血管风险升高的中年女性的生态瞬时评估研究。

本研究的目的是探讨中年女性身体满意度与体力活动 (PA) 之间的自然关联。患有心血管危险因素（例如高血压；N = 75；Mage = 51.63）的 40-60 岁女性在 10 天内每天对五次调查做出回应，同时连续收集来自加速度计的 PA 测量值。PA 参数包括认知决定因素（PA 动机和意图）和加速度计测量的 PA 行为（久坐行为、低强度 PA 和中度至剧烈 PA）。多层次模型表明，身体满意度与日常 PA 之间的关联因 PA 决定因素、时间范围（同时的和预期的）和水平（瞬时、每日和个人）而异。例如，女性的日常身体满意度和 PA 动机之间存在正向双向关联，而较高的瞬时光强度 PA（但不是中等到剧烈的 PA）与随后提示时较高的身体满意度单向相关。这些发现深入了解了身体满意度与 PA 之间的关联如何在中年女性的日常生活中展开，并强调了这些关联的复杂性。