Alderman Brandon L, Olson Ryan L
Department of Exercise Science and Sport Studies, Rutgers University, 70 Lipman Drive, New Brunswick, NJ 08901, United States.
Department of Nutritional Sciences, Rutgers University, United States.
Biol Psychol. 2014 May;99:26-33. doi: 10.1016/j.biopsycho.2014.02.007. Epub 2014 Feb 19.
This aim of the present study was to investigate relationships between aerobic fitness, sympathetic and parasympathetic cardiac control using pre-ejection period (PEP) and high frequency heart rate variability (HF HRV), and performance on a task requiring variable amounts of cognitive control. Fifty-six participants completed a modified-version of the Eriksen flanker task while PEP and HF HRV were collected. A graded maximal exercise test was subsequently used to measure aerobic fitness by assessing maximal oxygen uptake. Results indicated a significant relation of fitness to reaction time performance. Although no fitness differences were observed in resting state PEP or HF HRV, higher fit adults exhibited greater task-induced parasympathetic cardiac control. However, no significant mediation was found for HF HRV on the fitness-cognitive control relationship, suggesting other mediators may be important. These findings highlight the role of aerobic fitness in enhancing integrated autonomic and neurocognitive health.
本研究的目的是利用射血前期（PEP）和高频心率变异性（HF HRV）来研究有氧适能、交感神经和副交感神经对心脏的控制之间的关系，以及在需要不同认知控制量的任务中的表现。56名参与者完成了改良版的埃里克森侧翼任务，同时收集了PEP和HF HRV。随后进行了分级最大运动测试，通过评估最大摄氧量来测量有氧适能。结果表明适能与反应时间表现之间存在显著关系。尽管在静息状态下的PEP或HF HRV中未观察到适能差异，但身体更健康的成年人在任务诱导下表现出更大的副交感神经对心脏的控制。然而，未发现HF HRV对适能-认知控制关系有显著的中介作用，这表明其他中介因素可能很重要。这些发现突出了有氧适能在增强自主神经和神经认知综合健康方面的作用。
