Cardiovascular Reactivity to Behavioral Stress in Young Males With and Without Marginally Elevated Casual Systolic Pressures
Cardiovascular Reactivity to Behavioral Stress in Young Males With and Without Marginally Elevated Casual Systolic Pressures
复制标题
偶然收缩压轻微升高和不升高的年轻男性的心血管对行为压力的反应
作者：
K. Light;P. Obrist
研究人员比较了60名年轻男性在不同静息和应激条件下的心率（HR）、收缩压（SBP）和舒张压（DBP）水平。在低压力条件下，29名受试者有和31名未出现偶尔的随意收缩压读数为135毫米汞柱。这些小组被进一步分为两组，一组在压力避免冲击任务开始时的HR增长高于平均水平，另一组低于平均水平（高HR反应vs低HR反应）。高HR反应组和低HR反应组在逃避时的收缩压高于低HR反应组，在压力前休息期和冷压测试和观看情色短片时的收缩压和HR均高于低HR反应组（p < 0.01）。在压力较小的条件下（实验室放松、家庭医生读数和在家自我决定），高HR反应器和低HR反应器之间没有HR、收缩压或舒张压差异。在所有静息和应激条件下，随机SBP值为135美元的受试者的平均收缩压均高于随机SBP值< 135的受试者（p < 0.05），舒张压也普遍较高。在预应力休息和后应激状态下，平均收缩压水平最高的是对逃避任务具有高HR反应性的受试者，而两种特征均不具备的受试者的平均收缩压水平最低。高HR反应器的亲代高血压发生率高于低HR反应器，高HR反应器的亲代高血压发生率最高，sbp为2:135，提示HR对应激的反应性可能有助于预测未来的高血压。
SUMMARY Heart rate (HR), systolic (SBP), and diastolic (DBP) blood pressure levels were compared ID 60 young males during various resting and stressful conditions. Subjects included 29 who had and 31 who had not shown occasional casual SBP readings $ 135 mm Hg under low stress conditions. These groups were further divided into those who snowed above-average and below-average HR increases at onset of a stressful shock-avoidance task (high vs low HR reactors). High HR reactors, who were equally distributed in both casual SBP groups, also showed higher SBP than low reactors during avoidance, and higher HR and SBP during a pre-stress rest period and two other stresses, the cold pressor test and viewing an erotic dim (p's< 0.01). During less stressful conditions (relaxation in the laboratory, family doctor readings, and self-determinations at home), no HR, SBP, or DBP differences were seen between high and low HR reactors. Subjects with casual SBPs $ 135 showed higher mean SBP than those with casual SBPs< 135 under all resting and stressful conditions (p's< 0.05) and generally higher DBP as well. Highest mean SBP levels during prestress rest and later stresses were shown by subjects with both casual SBPs i> 135 and high HR reactivity to the avoidance task, and lowest by subjects with neither trait. Incidence of parental hypertension was greater among high than low HR reactors, and greatest among high reactors with casual SBPs 2: 135, suggesting that HR reactivity to stress may help predict future hypertension.