Hevel Derek J, Drollette Eric S, Dunton Genevieve F, Maher Jaclyn P
Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, USA.
Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA.
J Gerontol B Psychol Sci Soc Sci. 2021 Nov 15;76(10):1983-1992. doi: 10.1093/geronb/gbab036.
Older adults engage in excessive sedentary behaviors which hold significant health implications. Examining affect responses during sedentary behavior is not well understood despite the wealth of evidence linking affect and motivation. Contextual influences (i.e., social and physical) likely influence affective responses during sedentary behavior and therefore warrant further investigation.
Older adults (n = 103, Mage = 72, range: 60-98) participated in a 10-day study where they received 6 randomly timed, smartphone-based Ecological Momentary Assessment (EMA) prompts/day. Participants reported their affect, current behavior, and context at each EMA prompt. Participants also wore an activPAL accelerometer to measure their sedentary behavior duration. Separate multilevel models examined the extent to which the context influences affective responses during self-report sedentary (vs nonsedentary) behaviors.
The social context moderated the association between sedentary behavior and negative affect. The physical context moderated the association between sedentary behavior and positive affect.
Interventions should consider the context of behaviors when designing interventions to reduce sedentary behavior as some contextual factors may attenuate, while other contexts may exacerbate, associations between activity-related behaviors and indicators of well-being.
老年人存在过度久坐行为，这对健康有重大影响。尽管有大量证据表明情感与动机之间存在联系，但对于久坐行为期间的情感反应的研究还不够充分。情境影响（即社会和身体方面）可能会影响久坐行为期间的情感反应，因此值得进一步研究。
老年人（n = 103，平均年龄 = 72岁，范围：60 - 98岁）参与了一项为期10天的研究，他们每天会收到6次基于智能手机的随机定时生态瞬时评估（EMA）提示。参与者在每次EMA提示时报告自己的情感、当前行为和情境。参与者还佩戴了activPAL加速度计来测量他们的久坐行为时长。分别使用多层次模型来研究情境在自我报告的久坐行为（与非久坐行为相比）期间对情感反应的影响程度。
社会情境调节了久坐行为与负面影响之间的关联。身体情境调节了久坐行为与正面影响之间的关联。
在设计减少久坐行为的干预措施时，干预措施应考虑行为的情境，因为一些情境因素可能会减弱，而其他情境可能会加剧与活动相关的行为和幸福感指标之间的关联。
