Goldstein I B, Shapiro D
Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles 90024-1759, USA.
Int J Psychophysiol. 1996 Feb-Mar;21(2-3):91-5. doi: 10.1016/0167-8760(95)00044-5.
The goal of the study was to investigate postprandial blood pressure (BP) and heart rate (HR) changes among the elderly in the natural environment by means of ambulatory BP monitoring. A sample of 26 men and 27 women, 65-83 years of age, was studied 90 min before and during the 120 min following the initiation of the dinner meal on two separate days. Subjects all lived in their own homes, had no major disorders, and were not taking any medication. Sitting BP decreased significantly from 61-120 min after the initiation of eating (drop of 6.5/8.0 mmHg from pre-meal values). Heart rate showed an increase of 4 bpm at 31-90 min after beginning eating. Decreases in BP did not appear to be a function of the subject's state of arousal, time of meal, or level of activity. Cardiovascular changes in response to eating in a natural setting were comparable to those we reported in a previous study under controlled conditions. It is important to be aware of these changes when one is evaluating 24-h BP.
该研究的目的是通过动态血压监测来调查自然环境中老年人的餐后血压（BP）和心率（HR）变化。选取了26名男性和27名女性作为样本，年龄在65至83岁之间，在两个不同的日子里，于晚餐开始前90分钟以及开始后的120分钟内进行研究。所有受试者均居住在自己家中，无重大疾病，且未服用任何药物。进食开始后61至120分钟时，坐位血压较餐前值显著下降（下降6.5/8.0 mmHg）。进食开始后31至90分钟时，心率增加4次/分钟。血压下降似乎与受试者的觉醒状态、用餐时间或活动水平无关。在自然环境中进食时的心血管变化与我们之前在对照条件下所报告的变化相当。在评估24小时血压时，了解这些变化非常重要。
