Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, #16-16 Connexis, Singapore, 138632, Republic of Singapore.
Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), 30 Medical Drive, Brenner Centre for Molecular Medicine, Singapore, 117609, Republic of Singapore.
Int J Obes (Lond). 2024 Jun;48(6):867-875. doi: 10.1038/s41366-024-01489-4. Epub 2024 Feb 27.
BACKGROUND/OBJECTIVES: Ostracism may lead to increased food intake, yet it is unclear whether greater reactivity to ostracism contributes to higher body mass index (BMI). We investigated whether children who exhibited greater stress to social exclusion subsequently consume more energy and whether this predicts BMI 6- and 18-months later.
SUBJECTS/METHODS: Children (8.5 years-old) (N = 262, males = 50.4%; Chinese = 58.4%) completed a laboratory-based manipulation of social exclusion (the Cyberball task) prior to an ad-libitum snack. Heart rate variability (HRV) was measured during the inclusion and exclusion conditions and proportionate changes were calculated as a physiological measure of exclusion-related stress. Social anxiety and social-emotional assets were also measured as moderators.
Greater stress (as measured physiologically or by self-report) did not directly, or indirectly via energy intake, predict later BMI (at 9- and 10-years). However, among children reporting higher social anxiety, greater stress as measured by proportionate changes in HRV was associated with increased energy intake (B = 532.88, SE = 226.49, t(255) = 2.35, [CI = 86.85,978.92]). A significant moderated mediation was also observed (index: (b = 0.01, SE = 0.01, [CI = 0.001, 0.036]), such that among children reporting higher social anxiety, greater stress from social exclusion predicted increased energy intake from a subsequent snack, which in turn predicted higher BMI 1.5 years later.
This prospective study suggests that a pattern of greater snack intake in response to heightened vulnerability to the effects of ostracism may contribute to increases in child BMI scores.
背景/目的：被排斥可能会导致食物摄入量增加，但尚不清楚对排斥的反应性是否会导致更高的体重指数（BMI）。我们研究了表现出对社会排斥更大反应的儿童随后是否会消耗更多的能量，以及这种情况是否可以预测 6 个月和 18 个月后的 BMI。
研究对象/方法：8.5 岁的儿童（N=262，男性=50.4％；中国人=58.4％）在进行社交排斥（Cyberball 任务）的实验室操作之前，完成了随意的零食。在包含和排除条件下测量心率变异性（HRV），并计算比例变化作为与排斥相关的应激的生理测量。还测量了社交焦虑和社会情感资产作为调节剂。
无论从生理上还是从自我报告来看，更大的压力（压力越大）均不能直接或间接通过能量摄入来预测以后的 BMI（在 9 岁和 10 岁时）。但是，在报告社交焦虑较高的儿童中，HRV 比例变化所测量的更大压力与能量摄入增加有关（B=532.88，SE=226.49，t（255）=2.35，[CI=86.85，978.92]）。还观察到了显著的调节中介作用（指标：（b=0.01，SE=0.01，[CI=0.001，0.036]），即报告社交焦虑较高的儿童中，社会排斥引起的更大压力会预测随后的零食中能量摄入的增加，从而导致 1.5 年后 BMI 增加。
这项前瞻性研究表明，对排斥影响的敏感性增加导致对零食摄入增加的模式可能导致儿童 BMI 得分增加。
