Woody Mary L, Burkhouse Katie L, Birk Samantha L, Gibb Brandon E
Department of Psychology, Binghamton University (SUNY), Binghamton, New York, USA.
Psychophysiology. 2015 May;52(5):722-5. doi: 10.1111/psyp.12397. Epub 2014 Dec 16.
There is a well-known link between stress and depression, but diathesis-stress models suggest that not all individuals are equally susceptible to stress. The current study examined if brooding rumination, a known risk factor for depression, influences cardiovascular reactivity to a laboratory-based interpersonal stressor. Sixty-five women watched a baseline video and were exposed to an interpersonal stressor while high frequency heart rate variability (HRV) was collected. We found that women who endorsed higher levels of brooding rumination exhibited greater HRV withdrawal from baseline to stressor, an effect that was maintained when we controlled for levels of depression. This physiological vulnerability, when combined with high levels of stress, may be one mechanism underlying how brooding rumination increases depression risk.
压力与抑郁之间存在一种广为人知的联系，但素质-压力模型表明，并非所有人都同样容易受到压力的影响。当前的研究考察了沉思反刍（一种已知的抑郁风险因素）是否会影响对基于实验室的人际压力源的心血管反应。65名女性观看了一段基线视频，并在收集高频心率变异性（HRV）的同时暴露于人际压力源下。我们发现，认可更高水平沉思反刍的女性从基线到压力源期间表现出更大的HRV下降，当我们控制抑郁水平时，这种效应依然存在。这种生理易损性，与高水平压力相结合，可能是沉思反刍增加抑郁风险的一种潜在机制。
