Appetitive control is driven by the hedonic response to food and affected by several factors. Heart rate variability (HRV) signals have been used to index autonomic activity and arousal levels towards visual stimuli. The current research aimed to examine the influence of body mass index (BMI), disordered eating behaviors, and sex on the HRV reactivity to food in a nonclinical sample. Thirty-eight healthy male and sixty-one healthy female participants completed questionnaires assessing disordered eating symptoms. HRV was recorded when the participants received visual stimuli of high-calorie food, neutral and negative emotional signals. Generalized estimating equation models were used to investigate the associations between HRV, BMI, disordered eating behaviors, and sex across the three stimulus types. Male participants demonstrated a higher ratio of low-frequency power to high-frequency power (LF/HF) than females across all the stimulus types. An increase in LF/HF reactivity to food signals was observed in all the study subjects. The moderation effect of BMI on LF/HF in response to food signals was also observed. Our study suggests that body weight may play a role in the interaction between sympathetic activity and food stimuli; however, how the interaction between sympathetic activity and food stimuli contributes to diet control warrants further investigation.

食欲控制是由对食物的享乐反应驱动的，并受多种因素的影响。心率变异性 (HRV) 信号已被用于索引自主神经活动和对视觉刺激的唤醒水平。目前的研究旨在检查体重指数 (BMI)、饮食行为紊乱和性别对非临床样本中 HRV 对食物反应性的影响。38 名健康男性和 61 名健康女性参与者完成了评估饮食失调症状的问卷。当参与者收到高热量食物的视觉刺激、中性和负面情绪信号时记录 HRV。使用广义估计方程模型来研究三种刺激类型中 HRV、BMI、无序饮食行为和性别之间的关联。在所有刺激类型中，男性参与者表现出比女性更高的低频功率与高频功率 (LF/HF) 比率。在所有研究对象中观察到对食物信号的 LF/HF 反应性增加。还观察到 BMI 对 LF/HF 响应食物信号的调节作用。我们的研究表明，体重可能在交感神经活动和食物刺激之间的相互作用中起作用；然而，交感神经活动和食物刺激之间的相互作用如何有助于饮食控制值得进一步研究。我们的研究表明，体重可能在交感神经活动和食物刺激之间的相互作用中起作用；然而，交感神经活动和食物刺激之间的相互作用如何有助于饮食控制值得进一步研究。我们的研究表明，体重可能在交感神经活动和食物刺激之间的相互作用中起作用；然而，交感神经活动和食物刺激之间的相互作用如何有助于饮食控制值得进一步研究。