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暴露于特定于性别的应激源可减轻应激诱导的进食中性别差异。

Exposure to a sex-specific stressor mitigates sex differences in stress-induced eating.

机构信息

Oklahoma State University, 116 North Murray, Stillwater, OK 74078, USA.

出版信息

Physiol Behav. 2019 Apr 1;202:26-35. doi: 10.1016/j.physbeh.2019.01.017. Epub 2019 Jan 23.

Abstract

Literature suggests that stress-induced consumption of highly palatable food is a behavior pertaining almost exclusively to women. Given the overall association between stress levels and obesity in the United States transcends sex, it seems likely that males also engage in stress-induced consumption of highly palatable food in certain contexts. In the current study, 168 males and females (54.2% female) were randomly assigned to one of three experimental groups: achievement stress, social rejection stress, and a control condition. Stress was measured with cortisol and respiratory sinus arrhythmia (RSA) reactivity. Post stressor food consumption was measured by weighing several categories of food (highly palatable (sweet, salty), nutritious sweet, nutritious non-sweet, and bland) before and after the participant was introduced to the food items. Males demonstrated greater parasympathetic withdrawal and cortisol reactivity in the achievement condition than females; whereas females demonstrated greater parasympathetic withdrawal and cortisol reactivity in the social rejection condition than males. There were no significant differences in parasympathetic withdrawal between males and females in the control condition. Post-stressor highly palatable food consumption followed this trend. While there was no main effect for sex on the amount of post-stressor highly palatable food consumed, there was a significant main effect for condition and an interaction effect for sex and condition on the amount of post-stressor highly palatable food consumed. Our results challenge the prevailing notion that stress-induced eating of hyper palatable food is mainly found among women by finding that males also engage in such behavior if their experience leads to an adequate stress response.

摘要

文献表明,压力引起的对高美味食物的消费几乎是女性特有的行为。鉴于美国压力水平与肥胖之间的总体关联超越了性别,因此男性在某些情况下也可能会因压力而食用高美味食物。在当前的研究中,168 名男性和女性(54.2%为女性)被随机分配到三个实验组之一:成就压力、社交拒绝压力和对照组。压力通过皮质醇和呼吸窦性心律失常(RSA)反应来衡量。在向参与者介绍食物之前和之后,通过称重几种食物类别(高美味(甜、咸)、营养甜、营养非甜和无味)来衡量压力后的食物摄入量。男性在成就条件下表现出更大的副交感神经撤退和皮质醇反应,而女性在社交拒绝条件下表现出更大的副交感神经撤退和皮质醇反应。在对照组中,男性和女性之间的副交感神经撤退没有显著差异。压力后的高美味食物摄入也遵循这一趋势。虽然性别对压力后高美味食物摄入量没有主要影响,但条件有显著的主要影响,性别和条件对压力后高美味食物摄入量有交互影响。我们的研究结果挑战了这样一种观念,即压力引起的对高美味食物的消费主要发生在女性身上,而是发现,如果男性经历了足够的压力反应,他们也会有这种行为。

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