Heart Rate Variability as an Index of Resilience
Heart Rate Variability as an Index of Resilience
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DOI：
10.1093/milmed/usz325
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发表时间：
2020-03-01
影响因子：
1.2
通讯作者：
Rensberger, Jared
中科院分区：
文献类型：
--
作者：
An, Capt Eric;Nolty, Anne A. T.;Rensberger, Jared
抵抗力是指即使经历了压力事件，仍能保持或迅速恢复稳定的生理和心理平衡的能力。自主神经系统的灵活性对适应性应激反应特别重要，并可能导致个体在弹性方面的差异。心率变异性(HRV)功率谱分析可以测量交感迷走神经平衡，这有助于评估自主神经的灵活性。本研究将心率变异性作为恢复力的广泛指标进行研究。材料和方法24名来自陆军国民警卫队特种部队的男性参与者完成了已知与恢复力有关的心理测量，并在经历应激虚拟环境情景时测量了心率变异性。皮尔逊乘积-矩相关被用来探索HRV和复原力因素之间的关系。所有研究都是在富勒神学学院人类受试者审查委员会的监督下进行的。结果报告了有意义的趋势，以便提供在更高权力的研究中合理预期的结果。仅在特定的应激诱导模拟中才发现弹性因子和心率变异性之间的趋势(见表III)。结论在非应激期，对应激的弹性与心率变异性相关。在压力更大、情绪更痛苦的情况下，对创伤性事件的较高韧性与HRV相关。事后分析显示，包括灵活性、情绪控制和灵性在内的特定因素在情绪压力下推动了一般弹性和HRV之间的关系。在间歇性短暂应激源后，较少的应激易感性与HRV相关。总而言之，HRV似乎代表了一个人整体韧性的某些方面。尽管复原力仍然是一个复杂的、多维的结构，但HRV显示出作为全球复原力心理生理学指数的前景。这项研究还就如何优化身心健康提供了重要的观点。
IntroductionResilience is the ability to maintain or quickly return to a stable physical and psychological equilibrium despite experiencing stressful events. Flexibility of the autonomic nervous system is particularly important for adaptive stress responses and may contribute to individual differences in resilience. Power spectrum analysis of heart rate variability (HRV) allows measurement of sympathovagal balance, which helps to evaluate autonomic flexibility. The present study investigated HRV as a broad index of resilience.Materials and MethodsTwenty-four male participants from the Army National Guard Special Forces completed psychological measures known to relate to resilience and had HRV measured while undergoing stressful virtual environment scenarios. Pearson product-moment correlations were used to explore the relationships between HRV and resilience factors. All research was conducted with the oversight of the Human Subjects Review Committee of Fuller Theological Seminary.ResultsTrends toward significance were reported in order to provide results that would reasonably be expected in a study of higher power. Trends between resilience factors and HRV were found only during specific stress-inducing simulations (see Tables III).ConclusionGreater resilience to stress was associated with HRV during nonstress periods. Higher levels of resilience to traumatic events were associated with HRV during circumstances that were more stressful and emotionally distressing. Post hoc analysis revealed that specific factors including flexibility, emotional control, and spirituality were driving the relationship between general resilience and HRV following emotionally laden stressors. Less stress vulnerability was associated with HRV following intermittent brief stressors. In sum, HRV appears to represent some aspects of an individual's overall resilience profile. Although resilience remains a complex, multidimensional construct, HRV shows promise as a global psychophysiological index of resilience. This study also offers important perspectives concerning ways to optimize both physical and psychological health.