Do fluctuations in positive affective and physical feeling states predict physical activity and sedentary time?
Do fluctuations in positive affective and physical feeling states predict physical activity and sedentary time?
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DOI：
10.1016/j.psychsport.2018.01.011
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发表时间：
2019-03-01
影响因子：
3.4
通讯作者：
Dunton, Genevieve F.
中科院分区：
文献类型：
--
作者：
Maher, Jaclyn P.;Dzubur, Eldin;Dunton, Genevieve F.
目的：较高水平的积极情绪和能量感觉与较多的体力活动(PA)和较少的久坐时间(ST)相关。然而，这些情绪的波动是否有助于对这些行为的调节尚不清楚。这项研究考察了受试者在积极情绪和感觉活力方面的个体内变异性(即个体内变异性的程度)在多大程度上预测参与者的PA和ST的总体水平。设计：本分析结合了四项生态瞬时评估(EMA)研究(年龄范围：8-73岁)的数据和通过腰佩式加速度计进行的动态监测(N=661)。方法：通过EMA在4-7天内每天多次评估积极情绪和能量。使用加速度计数据来创建以下行为结果：(1)满足MVPA指南(儿童：60分钟/天，成人：30分钟/天)和(2)每小时佩戴加速度计的ST分钟。采用两阶段分析方法对研究目的进行检验。在第一阶段，混合效应地点尺度模型分解了积极情绪和能量的平均水平和变异性。在第二阶段，通过线性或逻辑回归检验(分别取决于结果是连续的还是二分的)，以考察受试者水平平均值与EMA评分的变异性和行为结果之间的关系。结果：受试者水平的变异性较大，但感觉精力充沛的受试者水平的平均值与达到MVPA指南的几率较低相关(beta=-0.43，p<；0.05)。结论：身体感觉状态的波动可能会耗尽参与规划和实施PA行为的自我调节资源。或者，更多的身体活动可能会稳定一个人感觉到的能量水平。
Objectives: Higher levels of positive affect and feelings of energy are associated with greater physical activity (PA) and lower sedentary time (ST). However, whether fluctuations in these feelings contribute to the regulation of these behaviors is unclear. This study examined the extent to which subject-level variability (i.e., degree of intraindividual variability) in positive affect and feeling energetic predicted participants' overall levels of PA and ST.Design: This analysis combined data from four ecological momentary assessment (EMA) studies (age(range): 8-73 years) with ambulatory monitoring via waist-worn accelerometry (N = 661).Methods: Positive affect and energy were assessed through EMA several times per day across 4-7 days. Accelerometer data was used to create the following behavioral outcomes: (1) meeting MVPA guidelines (children: 60 minutes/day, adults: 30 minutes/day) and (2) minutes of ST per hour of accelerometer wear. A two-stage analytic approach was used to test the study aim. In the first stage, mixed-effects location scale modeling decomposed mean levels and variability in positive affect and energy. In the second stage, a linear or logistic regression (depending on whether the outcome was continuous or dichotomous, respectively) was tested to investigate associations between subject-level mean and variability in EMA ratings and the behavioral outcome.Results: Greater subject-level variability but not subject-level mean of feeling energetic was associated with lower odds of meeting MVPA guidelines (beta = -0.43, p < 0.05).Conclusions: Fluctuations in physical feeling states may deplete self-regulatory resources involved in planning and implementing PA behavior. Alternatively, being more physically active may stabilize one's perceived energy levels.