Department of General Psychiatry, Center for Psychosocial Medicine, University Hospital Heidelberg, Heidelberg, Germany.
Psychophysiology. 2012 May;49(5):672-82. doi: 10.1111/j.1469-8986.2011.01341.x. Epub 2012 Feb 15.
Heart rate variability (HRV) is a measure of autonomic influences on heart rate that has frequently been used as a transsituationally consistent biomarker for cardiovascular health and emotional or cognitive functions. The psychometric properties of HRV however remain unclear. In the present study, we examined the reliability and temporal stability of parasympathetic HRV measures and estimated the portion of variance explained by transsituationally consistent trait variance and by effects of the situation and person-situation interaction with structural equation modeling. The results show good reliability of indices reflecting central parasympathetic control over heart rate and that about 40% of the variance of a single HRV measurement can be explained by effects of the situation and person-situation interaction. An aggregation across at least two measurements may be recommended when using HRV as a transsituationally consistent biomarker or trait.
心率变异性（HRV）是一种衡量自主神经对心率影响的指标，它经常被用作心血管健康和情绪或认知功能的跨情境一致的生物标志物。然而，HRV 的心理测量特性仍不清楚。在本研究中，我们检查了副交感 HRV 测量的可靠性和时间稳定性，并使用结构方程模型估计了由跨情境一致的特质方差和情境及人与情境相互作用的影响所解释的方差比例。结果表明，反映心率的中枢副交感控制的指标具有良好的可靠性，单个 HRV 测量的约 40%的方差可以由情境和人与情境相互作用的影响来解释。当使用 HRV 作为跨情境一致的生物标志物或特质时，建议至少两次测量的聚合。
