Department of Biobehavioral Health, Pennsylvania State University, University Park, Pennsylvania 16802, USA.
Psychophysiology. 2012 Apr;49(4):470-7. doi: 10.1111/j.1469-8986.2011.01335.x. Epub 2012 Jan 3.
Little is known about transient effects of foods and nutrients on reactivity to mental stress. In a randomized crossover study of healthy adults (n=20), we measured heart rate variability (respiratory sinus arrhythmia), blood pressure, and other hemodynamic variables after three test meals varying in type and amount of fat. Measurements were collected at rest and during speech and cold pressor tasks. There were significant postmeal changes in resting diastolic blood pressure (-4%), cardiac output (+18%), total peripheral resistance (-17%), and interleukin-6 (-27%). Heart rate variability and hemodynamic reactivity to stress was not affected by meal content. We recommend that future studies control for time since last meal and continue to examine effects of meal content on heart rate variability.
对于食物和营养素对精神应激反应性的短暂影响知之甚少。在一项针对健康成年人（n=20）的随机交叉研究中，我们测量了三种不同类型和脂肪含量的测试餐食后心率变异性（呼吸窦性心律失常）、血压和其他血液动力学变量。在休息和言语及冷加压任务期间进行了测量。静息舒张压（-4%）、心输出量（+18%）、总外周阻力（-17%）和白细胞介素-6（-27%）在餐后均有明显变化。心率变异性和应激时的血液动力学反应不受膳食内容的影响。我们建议未来的研究控制最后一餐的时间，并继续研究膳食内容对心率变异性的影响。
