Mood and autonomic responses to repeated exposure to the Trier Social Stress Test for Groups (TSST-G)
Mood and autonomic responses to repeated exposure to the Trier Social Stress Test for Groups (TSST-G)
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DOI：
10.1016/j.psyneuen.2014.02.003
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发表时间：
2014-05-01
影响因子：
3.7
通讯作者：
La Marca, Roberto
中科院分区：
文献类型：
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作者：
Boesch, Maria;Sefidan, Sandra;La Marca, Roberto
特里尔社会压力测试（TSST-G）是一种标准化的、经济的、有效的工具，可以同时诱导一组被试的心理生物学应激反应。本研究的目的是检验TSST-G重复诱导情感和自主应激反应的功效，同时比较两种替代方案的第二次检查。方法与材料：健康青年男性新兵参加两次TSST-G，间隔10周。在第一次测试中，TSST-G由心算和假面试组成（TSST-G-1; n = 294）。在第二次测试中，心算与(a)针对一个虚假的入店行窃指控的辩护演讲（tsst - g -2辩护，n = 105）或(b)调查人员选择的一个更中性的话题的演讲（tsstg -2演示，n = 100）相结合。在压力测试前后立即测定影响评分和唾液α -淀粉酶（sAA），同时连续测定心率（HR）和心率变异性（HRV）。结果：tsst - g -1使负性情绪、HR、sAA显著升高，积极情绪、HRV显著降低。总的来说，tsst - g -2导致HR和sAA的显著增加（后者仅在tsst - g -2防御反应中）和HRV的降低，而没有发现显著的影响改变。在比较tsst - g -2防卫和-2呈递时，前者在HR和HRV方面产生更强的应激反应。讨论：研究结果表明，TSST-G是一个有用的方案，反复唤起情感和自主应激反应，而重复导致情感习惯，但不一定是自主习惯。当对重复的心理社会压力反应感兴趣时，一个需要自我参与的任务，比如防御性的演讲，似乎明显优于使用非个人演讲的任务。(C) 2014 Elsevier Ltd.版权所有。
Introduction: A group version of the Trier Social Stress Test (TSST-G) was introduced as a standardized, economic and efficient tool to induce a psychobiological stress response simultaneously in a group of subjects. The aim of the present study was to examine the efficacy of the TSST-G to repeatedly induce an affective and autonomic stress response while comparing two alternative protocols for the second examination.Methods and materials: Healthy young male recruits participated twice in the TSST-G 10 weeks apart. In the first examination, the TSST-G consisted of a combination of mental arithmetic and a fake job interview (TSST-G-1st; n = 294). For the second examination, mental arithmetic was combined with either (a) a defensive speech in response to a false shoplifting accusation (TSST-G-2nd-defence; n = 105), or (b) a speech on a more neutral topic selected by the investigators (TSSTG-2nd-presentation; n = 100). Affect ratings and salivary alpha-amylase (sAA) were determined immediately before and after the stress test, while heart rate (HR) and heart rate variability (HRV) were measured continuously.Results: TSST-G-1st resulted in a significant increase of negative affect, HR, and sAA, and a significant decrease in positive affect and HRV. TSST-G-2nd, overall, resulted in a significant increase of HR and sAA (the latter only in response to TSST-G-2nd-defence) and a decrease in HRV, while no significant affect alterations were found. When comparing both, TSST-G-2nd-defence and -2nd-presentation, the former resulted in a stronger stress response with regard to HR and HRV.Discussion: The findings reveal that the TSST-G is a useful protocol to repeatedly evoke an affective and autonomic-stress response, while repetition leads to affective but not necessarily autonomic habituation. When interested in examining repeated psychosocial stress reactivity, a task-that requires an ego-involving effort, such as a defensive speech, seems to be significantly superior to a task using an impersonal speech. (C) 2014 Elsevier Ltd. All rights reserved.