Southern Methodist University, Dallas, TX 75275, USA.
Eat Behav. 2012 Aug;13(3):194-201. doi: 10.1016/j.eatbeh.2012.01.009. Epub 2012 Jan 28.
Individuals with elevated anxiety sensitivity (AS; i.e., fear of somatic arousal) may binge eat to reduce emotional distress. Because physical activity reduces stress reactivity, we predicted that: (1) the relation between AS and binge eating would be moderated by physical activity and (2) coping motives for eating would mediate the association between AS and binge eating such that the relation would be stronger for those low in physical activity. Participants (N=167) completed online self-report measures. Regression analyses revealed that moderate-intensity physical activity (MPA) moderated the relation between AS and binge eating such that AS was not related to binge eating among those who frequently engaged in MPA but was related to binge eating among those who did not report engaging in MPA. Vigorous-intensity physical activity (VPA) moderated in the opposite direction such that the relation between AS and binge eating was significant among persons reporting high levels of VPA but less strong among persons reporting low levels of VPA. The mediation model was also significant, but was not moderated by MPA or VPA. Theoretical and clinical implications are discussed.
个体的焦虑敏感程度（AS；即对躯体唤醒的恐惧）可能会导致暴食以减轻情绪困扰。由于体育活动可以降低应激反应，我们预测：（1）体育活动会调节 AS 与暴食之间的关系；（2）进食应对动机在 AS 与暴食之间起中介作用，对于体育活动水平较低的个体，这种关系更强。参与者（N=167）完成了在线自我报告测量。回归分析显示，中等强度的体育活动（MPA）调节了 AS 与暴食之间的关系，即对于经常进行 MPA 的个体，AS 与暴食无关，但对于不报告进行 MPA 的个体，AS 与暴食有关。剧烈强度的体育活动（VPA）则以相反的方向调节，即对于报告高水平 VPA 的个体，AS 与暴食之间的关系显著，但对于报告低水平 VPA 的个体，这种关系较弱。中介模型也具有统计学意义，但不受 MPA 或 VPA 的调节。讨论了理论和临床意义。
