Reliability of cardiovascular reactivity to stress: Internal consistency
Reliability of cardiovascular reactivity to stress: Internal consistency
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DOI：
10.1111/j.1469-8986.2007.00499.x
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发表时间：
2007-03-01
期刊：
影响因子：
3.7
通讯作者：
Alpert, Bruce S.
中科院分区：
文献类型：
--
作者：
Kelsey, Robert M.;Ornduff, Sidney R.;Alpert, Bruce S.
关于心血管反应可靠性的研究主要集中在时间稳定性和任务间一致性上，但结果有限。本研究评估了青少年和年轻人的三个大样本（N = 326、136 和 142）心血管反应性的内部一致性可靠性。在休息时和标准实验室应激任务（数学、视频游戏、冷加压剂）期间记录阻抗心电图和血压测量值。根据 Cronbach 内部一致性 alpha 系数评估，任务中心血管反应的可靠性对于 4 分钟至 5 分钟的数学任务，范围为 alpha=0.83 至 0.96；对于 3 分钟的视频游戏和冷加压任务，范围为 alpha=0.65 至 0.94。尽管在任务中高度可靠，但心血管反应在任务中的可靠性较低，即使在单个测试会话中也是如此。讨论了内部一致性和任务间一致性之间差异的可能原因。
Research on the reliability of cardiovascular reactivity has focused on temporal stability and intertask consistency with only modest results. The present study evaluated the internal consistency reliability of cardiovascular reactivity in three large samples of adolescents and young adults (N=326, 136, and 142). Impedance cardiographic and blood pressure measures were recorded at rest and during standard laboratory stress tasks (math, video game, cold pressor). The reliability of cardiovascular reactivity within tasks, as assessed by Cronbach's alpha coefficient of internal consistency, ranged from alpha=.83 to .96 for 4-min to 5-min math tasks, and alpha=.65 to .94 for 3-min video game and cold pressor tasks. Although highly reliable within tasks, cardiovascular reactivity was less reliable across tasks, even within a single testing session. Possible reasons for the discrepancy between internal consistency and intertask consistency are discussed.