Airflow and autonomic responses to stress and relaxation in asthma: The impact of stressor type
Airflow and autonomic responses to stress and relaxation in asthma: The impact of stressor type
复制标题
DOI：
10.1016/j.ijpsycho.2005.02.004
复制
发表时间：
2005-09-01
影响因子：
3
通讯作者：
Ditto, B
中科院分区：
文献类型：
--
作者：
Aboussafy, D;Campbell, TS;Ditto, B
压力对哮喘患者呼吸气流的影响尚不清楚。部分不确定性可能源于不同压力源的不同生理效应。考虑到它们有可能引起副交感神经迷走神经活动的增加，压力情况下，目前很少有机会应对（被动应对压力源）可能是特别有问题的哮喘患者。31名成人哮喘患者参加了一项协议，包括广泛使用的被动应对压力源（冷加压试验），主动应对压力源（心算），关于令人不安的哮喘相关事件的访谈（鉴于暴露于不愉快的记忆，被视为潜在的被动应对压力源），以及渐进式肌肉放松。重复测量气流（通过呼气峰流量）、迷走神经张力（通过心率变异性）和其他变量。与基线期相比，冷加压试验、哮喘访谈和渐进性肌肉放松使气流显著减少。冷加压试验和渐进性肌肉松弛产生了显著的、互补的迷走神经张力增加。这些结果表明，被动应对压力源和其他刺激（例如，某些形式的放松）可能与较差的哮喘控制有关，这一观点与参与者对任务的平均迷走神经张力反应与哮喘自我效能测量得分之间的显著负相关性一致。(c)2005年由Elsevier B.V.出版
The impact of stress on respiratory airflow in asthmatics is unclear. Part of the uncertainty may spring from the different physiological effects of different stressors. Given their potential to elicit increases in parasympathetic vagal activity, stressful situations that present few opportunities for coping (passive coping stressors) may be particularly problematic for people with asthma. Thirty-one adult asthmatics participated in a protocol including a widely used passive coping stressor (the cold pressor test), an active coping stressor (mental arithmetic), an interview about an upsetting asthma-related incident (viewed as a potential passive coping stressor given the exposure to unpleasant memories), and progressive muscle relaxation. Repeated measurements of airflow (via peak expiratory flow), vagal tone (via heart rate variability), and other variables were obtained. The cold pressor test, asthma interview and progressive muscle relaxation produced significant decreases in airflow compared to the baseline period. The cold pressor test and progressive muscle relaxation produced significant, complementary increases in vagal tone. These results suggest that passive coping stressors and other stimuli (e.g., certain forms of relaxation) that elicit increased vagal tone may be associated with poorer asthma control, a view consistent with a significant negative correlation between the participant's mean vagal tone response to the tasks and score on a measure of asthma self-efficacy. (c) 2005 Published by Elsevier B.V.