How acute affect dynamics impact longitudinal changes in physical activity among children.
How acute affect dynamics impact longitudinal changes in physical activity among children.
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影响动态对儿童体力活动纵向变化的影响有多严重。
DOI：
10.1007/s10865-022-00282-w
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发表时间：
2022
影响因子：
3.1
通讯作者：
Hedeker,Donald
中科院分区：
文献类型：
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作者：
Dunton,GenevieveF;Wang,Wei-Lin;Intille,StephenS;Dzubur,Eldin;Ponnada,Aditya;Hedeker,Donald
研究探讨了急性影响动态，包括稳定性和上下文依赖性，如何有助于儿童的身体活动水平的变化，因为他们从童年后期过渡到青春期早期。儿童（N = 151）（基线时年龄为8-12岁）参加了一项生态瞬时评估和加速度测量研究，在三年内进行了六次半年一次的爆发（每次7天）。一个两阶段的混合效应多位置尺度模型测试的随机截距，方差和斜率估计的积极影响作为中度到剧烈的体力活动（MVPA）的预测。在积极情感方面具有更大受试者水平差异的儿童，MVPA的多年下降幅度更大。独自一人时经历更多积极情感的儿童在体力活动方面没有经历更大的下降。针对儿童体力活动长期变化的干预措施可能侧重于缓冲影响或定制方案以适应“急性动态过程表型”的需要。
Research examined how acute affect dynamics, including stability and context-dependency, contribute to changes in children’s physical activity levels as they transition from late-childhood to early-adolescence. Children (N = 151) (ages 8–12 years at baseline) participated in an ecological momentary assessment and accelerometry study with six semi-annual bursts (7 days each) across three years. A two-stage mixed-effects multiple location-scale model tested random intercept, variance, and slope estimates for positive affect as predictors of moderate-to-vigorous physical activity (MVPA). Multi-year declines in MVPA were greater for children who had greater subject-level variance in positive affect. Children who experienced more positive affect when alone did not experience steeper declines in physical activity. Interventions aiming for long-term modifications in children’s physical activity may focus on buffering the effects of within-day fluctuations in affect or tailoring programs to fit the needs of “acute dynamic process phenotypes.”