Cortisol Level Modulated by Integrative Meditation in a Dose-dependent Fashion
Cortisol Level Modulated by Integrative Meditation in a Dose-dependent Fashion
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DOI：
10.1002/smi.2497
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发表时间：
2014-02-01
影响因子：
4.1
通讯作者：
Posner, Michael I.
中科院分区：
文献类型：
--
作者：
Fan, Yaxin;Tang, Yi-Yuan;Posner, Michael I.
先前的研究表明，与接受相同量放松训练的对照组相比，接受为期 5 天的身心综合训练 (IBMT) 的大学生组在急性应激后立即进行额外的训练会减少唾液皮质醇的释放。然而，5天的训练并不影响皮质醇的基础分泌。目前的研究旨在扩展这一发现，并确定增加 IBMT 的量是否会降低基础皮质醇水平，从而表明日常活动的压力会减少。 34 名中国本科生被随机分配接受为期 4 周的 IBMT 或放松对照组。评估训练前基线唾液皮质醇水平以及训练 2 周和 4 周后压力干预测试的三个阶段（即休息、压力和额外 20 分钟练习）。训练 2 周和 4 周后，IBMT 组的基础皮质醇水平显着下降，但放松组没有显着下降。与第 2 周和第 4 周的放松相比，在急性应激后立即进行额外的 IBMT 练习，IBMT 组的皮质醇释放量显着降低。结果表明，随着训练剂量的增加，IBMT 会导致基础内分泌系统发生变化，并产生更大的急性效应。版权所有 (c) 2013 John Wiley & Sons, Ltd.
Prior research has shown that an additional training session immediately after acute stress decreases release of salivary cortisol in a college student group trained with 5-day integrative body-mind training (IBMT) in comparison with a control group given the same amount of relaxation training. However, 5days of training does not influence the basal secretion of cortisol. The current study seeks to extend this finding and determine whether increasing amounts of IBMT will decrease the basal cortisol level, suggesting reduced stress to daily activities. Thirty-four Chinese undergraduates were randomly assigned either to 4weeks of IBMT or a relaxation control. Salivary cortisol levels at baseline before training and the three stages of a stress intervention test (i.e. rest, stress and additional 20-min practice) after 2 and 4weeks of training were assessed. The basal cortisol level decreased significantly in the IBMT but not in relaxation group after 2 and 4weeks of training. An additional IBMT practice session immediately after acute stress produced significantly lower cortisol release for the IBMT group in comparison with relaxation at weeks 2 and 4. The results indicate that IBMT produces a change in the basal endocrine system and larger acute effects as the dose of training increases. Copyright (c) 2013 John Wiley & Sons, Ltd.