School of Sport and Exercise Sciences, University of Birmingham, Birmingham, United Kingdom.
Int J Psychophysiol. 2013 Oct;90(1):17-20. doi: 10.1016/j.ijpsycho.2012.10.005. Epub 2012 Oct 13.
It has been argued recently that blunted cardiovascular reactions to acute psychological stress have adverse behavioural and health corollaries that reflect dysregulation of the neural systems that support motivation. We examined the association between cardiovascular reactions to a standard stress task, the paced auditory serial arithmetic rest, and forced expiratory volume in one second, an effort, hence motivation, dependent assessment of lung function measured by spirometry. Low forced expiratory volume, expressed as a ratio to height squared was associated with blunted heart rate, but not blood pressure, stress reactivity, r=.17, p<.001. The association survived adjustment for smoking, a range of anthropometric and sociodemographic covariates, resting heart rate and stress task performance, β=.11, p=.005. As such, our results provide support for the hypothesis that blunted stress reactivity may be a peripheral marker of a dysfunction in the brain systems that support motivated behaviour.
最近有人认为，急性心理应激时心血管反应迟钝与行为和健康后果有关，反映了支持动机的神经调节系统失调。我们研究了标准应激任务—— paced auditory serial arithmetic rest（ paced 听觉连续算术休息）和用力呼气量（forced expiratory volume in one second，一秒用力呼气量）之间的关联，后者是通过肺活量计测量的与努力有关、反映肺功能的指标。低用力呼气量（forced expiratory volume）以身高平方的比值表示，与心率反应迟钝有关，但与血压、压力反应无关，r=.17，p<.001。该关联在调整了吸烟、一系列人体测量学和社会人口学协变量、静息心率和应激任务表现后仍然存在，β=.11，p=.005。因此，我们的结果支持这样一种假设，即压力反应迟钝可能是支持动机行为的大脑系统功能障碍的外周标志物。
