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首页> 外文期刊>Psychosomatic Medicine: Journal of the American Psychosomatic Society >Resting end-tidal CO2 and negative affectivity.
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Resting end-tidal CO2 and negative affectivity.

机译：潮气末二氧化碳静息和负面影响。

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OBJECTIVE: Dhokalia, Parsons, and Anderson (Psychosom Med 1998;60:33-37) found a positive correlation between a trait measure of negative affectivity (NA; neuroticism) and resting end-tidal fractional concentration of CO2 (FetCO2) (fractional-concentration of end-tidal carbon dioxide) in a nonclinical sample. This contrasts sharply with studies reporting a negative association of FetCO2 with state measures of NA and with studies reporting no or a negative relationship between FetCO2 and trait NA. In two studies we aimed to clarify this paradox. MATERIALS AND METHODS: In the first study, 110 participants (83 women) completed the PANAS and a Checklist for Psychosomatic Symptoms in daily life. FetCO2 was measured noninvasively during 5 minutes via a nose cannula connected to a capnograph. In the second study, FetCO2 of high (N= 20, 10 men) and low (N= 20, 10 men) NA participants was sampled once with a nasal cannula and once while breathing through a mouthpiece for 6 minutes each during rest, completion of the NEO-PI-R questionnaire, and completion of a verbal knowledge test. RESULTS: The first study found no association between trait NA and resting FetCO2 after partialling out the effects of gender, menstrual phase, and use of oral contraceptives. The second study showed that FetCO2 increased significantly in the high NA group only when the particpants filled out the questionnaires, regardless of its type. CONCLUSIONS: Overall, no association between dispositional NA and cross-situational FetCO2 was observed. Apparently inconsistent findings may be caused by lack of control for hormonal status and mental load during testing.
机译：目的：Dhokalia，Parsons和Anderson（Psychosom Med 1998; 60：33-37）发现，负面情绪（NA;神经质）的特征量度与潮气中静止的CO2分数浓度（FetCO2）之间呈正相关（分数-非临床样本中的潮气末二氧化碳浓度）。这与报告FetCO2与NA状态量呈负相关的研究以及报告FetCO2与性状NA之间无负相关或与之呈负相关的研究形成鲜明对比。在两项研究中，我们旨在阐明这一悖论。材料与方法：在第一项研究中，有110名参与者（83名女性）完成了PANAS和日常生活中的心身症状清单。 FetCO2在5分钟内通过连接到二氧化碳分析仪的鼻插进行了无创测量。在第二项研究中，对高（N = 20，10名男性）和低（N = 20，10名男性）NA参与者的FetCO2进行了一次鼻插管采样，一次在休息，完成时通过咬嘴呼吸6分钟。 NEO-PI-R问卷的填写，以及口头知识测验的完成。结果：第一项研究发现，在不分性别，月经期和使用口服避孕药的影响后，NA特性与静息的FetCO2之间没有关联。第二项研究表明，仅当参与者填写问卷后，高NA组的FetCO2才显着增加，无论其类型如何。结论：总体而言，未观察到处置性NA和跨境FetCO2之间的关联。显然不一致的发现可能是由于在测试期间无法控制荷尔蒙状态和精神负担所致。

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