Higher self-reported rumination, a common form of trait perseverative cognition, is linked with lower resting heart rate variability (HRV), which indicates poorer cardiac function and greater disease risk. A meta-analysis and systematic review indicated that in samples with fewer European Americans, the association of rumination with both heart rate and blood pressure was stronger. Thus, trait rumination may be more strongly associated with resting HRV among ethnically minoritized populations. The current study investigated whether differences in the association of self-reported rumination with resting HRV varied by ethnicity in a sample (N = 513; M_age = 19.41; 226 Women) of self-identified African Americans (n = 110), Asian Americans (n = 84), and European Americans (n = 319). Participants completed a five-minute baseline period to assess resting HRV, followed by the Ruminative Responses Scale, which contains three facets of rumination including brooding, depressive, and reflective rumination. On average, Asian Americans reported higher levels of rumination relative to European Americans. African Americans had higher resting HRV than Asian Americans. Adjusting for covariates, higher self-reported rumination was significantly associated with lower resting HRV in both African and Asian Americans, but not significantly so in European Americans. This finding was consistent for brooding and reflective, but not depressive rumination. Overall, this study lends insight into a psychological mechanism—rumination—that may impact health disparities among ethnically minoritized individuals, contributing to an understanding of how stress gets under the skin among such minoritized populations.

中文翻译：

---

思考和心率变异性之间的联系存在多种族差异：对健康差异的影响

较高的自我报告沉思是一种持续性认知特征的常见形式，与较低的静息心率变异性 (HRV) 相关，这表明心脏功能较差，疾病风险较高。一项荟萃分析和系统评价表明，在欧洲裔美国人较少的样本中，沉思与心率和血压的关联性更强。因此，在少数族裔人群中，性状沉思可能与静息 HRV 密切相关。目前的研究调查了自我报告的沉思与静息 HRV 之间的关联是否因种族而异，样本中的样本（N  = 513；M_年龄 = 19.41；226 名女性）为非裔美国人（n  = 110）、亚裔美国人( n  = 84) 和欧洲裔美国人 ( n  = 319)。参与者完成了五分钟的基线期来评估静息 HRV，然后进行沉思反应量表，其中包含沉思的三个方面，包括沉思、抑郁和反思沉思。平均而言，亚裔美国人的沉思程度高于欧洲裔美国人。非裔美国人的静息 HRV 高于亚裔美国人。调整协变量后，非裔美国人和亚裔美国人自我报告的反刍行为较高与较低的静息 HRV 显着相关，但在欧洲裔美国人中则不显着。这一发现对于沉思和反思是一致的，但对于抑郁沉思则不然。总的来说，这项研究深入了解了一种心理机制——沉思——可能会影响少数族裔个体的健康差异，有助于了解压力是如何在这些少数族裔群体中产生的。