Uijtdehaage S H, Shapiro D, Jaquet F
University of California, Neuropsychiatric Institute, Los Angeles 90024.
Biol Psychol. 1994 Sep;38(1):53-72. doi: 10.1016/0301-0511(94)90049-3.
This study examined the effects of standard laboratory stressors on cardiovascular measures before and after the consumption of a modest meal. A mental arithmetic task and a reaction time task were administered before and 2 h after a carbohydrate or a protein meal. A noncaloric placebo meal and a fasting condition were included as control treatments. The caloric meals, in particular the carbohydrate meal, induced an increase in cardiac output, ventricular contractility, and systolic blood pressure. Total peripheral resistance and diastolic blood pressure dropped. Although postprandial adjustments were substantial, stress reactivity patterns generally were not perturbed by the meals. Only heart rate reactivity was stronger after eating the carbohydrate meal. It is concluded that subjects' meal consumption prior to their participation in a psychophysiological experiment needs to be taken into account.
本研究考察了适量进食前后标准实验室应激源对心血管指标的影响。在进食碳水化合物餐或蛋白质餐后0小时和2小时，分别进行了心算任务和反应时间任务。非热量安慰剂餐和禁食状态作为对照处理。热量餐，尤其是碳水化合物餐，可导致心输出量、心室收缩力和收缩压增加。总外周阻力和舒张压下降。尽管餐后调整幅度较大，但应激反应模式总体上未受进餐干扰。仅进食碳水化合物餐后心率反应更强。研究得出结论，在受试者参与心理生理实验之前，需要考虑其进餐情况。
