Department of Psychiatry and Behavioral Sciences, University of Southern California, 2250 Alcazar St #2200, Los Angeles, CA, 90033, USA.
Department of Psychology, Illinois Institute of Technology, Chicago, IL, USA.
J Behav Med. 2020 Dec;43(6):916-931. doi: 10.1007/s10865-020-00152-3. Epub 2020 Apr 17.
Insufficient physical activity (PA) and excessive stationary behavior (SB) are contributors to pediatric obesity, though antecedents and consequences of these behaviors in this population are relatively unknown. This pilot study examined affect, loss of control eating (LOCE), overeating, and hunger surrounding PA and SB in 17 youth with overweight/obesity. Participants completed a 14-day ecological momentary assessment (EMA) wearing accelerometers. At the momentary level, higher negative affect and lower positive affect predicted SB increases and PA decreases following EMA prompts; higher PA and lower SB also predicted increases in positive affect. Higher LOCE predicted SB increases and PA decreases, while increases in PA and decreases in SB predicted short-term increases in LOCE and overeating. At the individual level, higher SB and lower PA were related to lower positive affect and higher negative affect, LOCE, overeating, and hunger. Findings suggest affect is a relevant antecedent and consequence of PA/SB, and dysregulated eating may acutely impact PA/SB.
体力活动不足（PA）和过度久坐行为（SB）是导致儿童肥胖的因素，但在该人群中，这些行为的前因后果相对未知。本项初步研究调查了超重/肥胖的 17 名青少年在 PA 和 SB 时的情绪、失控性进食（LOCE）、暴食和饥饿。参与者佩戴加速度计完成了为期 14 天的生态瞬时评估（EMA）。在瞬时水平上，较高的负性情绪和较低的正性情绪预示着 EMA 提示后 SB 的增加和 PA 的减少；较高的 PA 和较低的 SB 也预示着正性情绪的增加。较高的 LOCE 预示着 SB 的增加和 PA 的减少，而 PA 的增加和 SB 的减少则预示着 LOCE 和暴食的短期增加。在个体水平上，较高的 SB 和较低的 PA 与较低的正性情绪和较高的负性情绪、LOCE、暴食和饥饿有关。研究结果表明，情绪是 PA/SB 的一个相关的前因和后果，而饮食失调可能会对 PA/SB 产生急性影响。
