Köhler T, Dunker J, Zander O
Psychologisches Institut III, Universität Hamburg.
Z Exp Angew Psychol. 1990;37(3):447-58.
The number of active sweat glands (PSI), heart rate, systolic (SBP) and diastolic blood pressure (DBP) were assessed every 2 minutes in 109 male blood donors. Three measurements were taken at the beginning (adaptation phase), three later but before blood donation (baseline), one during the venous puncture (phase 3), three thereafter but still during donation (phase 4), and four after removal of the cannula (phase 5). Analysis of variance yielded significant differences between phases; PSI and SBP behaved similarly, decreasing from adaptation to baseline, rising during puncture, and decreasing again thereafter. Mean within-subject correlations between variables were significantly above 0. Between-subjects correlations were significantly negative for PSI and DBP. This is best explained by the influence of age on both variables. Correlations of PSI values as determined by three raters had a mean of 0.90. The study shows that the PSI is a very sensitive indicator of stress that is easily accessible also in field studies.
对109名男性献血者每2分钟评估一次活跃汗腺数量（PSI）、心率、收缩压（SBP）和舒张压（DBP）。在开始时（适应阶段）进行三次测量，之后但在献血前（基线）进行三次测量，静脉穿刺期间进行一次测量（阶段3），此后但仍在献血期间进行三次测量（阶段4），拔针后进行四次测量（阶段5）。方差分析显示各阶段之间存在显著差异；PSI和SBP表现相似，从适应阶段到基线阶段下降，穿刺期间上升，此后再次下降。变量之间的受试者内平均相关性显著高于0。PSI与DBP的受试者间相关性显著为负。这最好用年龄对这两个变量的影响来解释。由三名评估者确定的PSI值的相关性平均为0.90。该研究表明，PSI是一种非常敏感的应激指标，在现场研究中也很容易获得。
