Luft Caroline Di Bernardi, Takase Emílio, Darby David
Psychology Post-Graduation Program, Federal University of Santa Catarina, Laboratory of Sports and Exercise Neuroscience, Heitor Luz, n.225, ap.208, 88015-500 Florianopolis, Santa Catarina, Brazil.
Biol Psychol. 2009 Oct;82(2):164-168. doi: 10.1016/j.biopsycho.2009.07.007. Epub 2009 Jul 24.
This study investigated alterations in heart rate variability (HRV) and cognitive performance before and after physical effort, for 30 high-level track and field athletes (23 males and 7 females). Interbeat intervals were assessed at the baseline and during each task of a CogState cognitive battery (simple reaction time, choice reaction time, working memory, short-term memory and sustained attention). Time and frequency domain measures of HRV were compared between conditions and between tasks. The results indicated differences in HRV between executive and non-executive tasks. There was a significant increase in sympathetic-modulation-related indices after physical effort. The differences between executive and non-executive tasks were the same in post-test. Correlations were found between HRV and cognitive performance, which differed by speed and accuracy. We conclude that HRV is related to cognitive demand and that the correlation between HRV and cognitive performance seems to be stronger after physical exercise. The results raise questions about the psychophysiological meaning of different HRV signals and this has implications for future research about the relationship between HRV and cognition.
本研究调查了30名高水平田径运动员（23名男性和7名女性）在体力活动前后心率变异性（HRV）和认知表现的变化。在基线以及CogState认知测试电池的每个任务（简单反应时间、选择反应时间、工作记忆、短期记忆和持续注意力）期间评估心跳间期。比较了不同条件和不同任务之间HRV的时域和频域测量值。结果表明执行任务和非执行任务之间的HRV存在差异。体力活动后，与交感神经调节相关的指标显著增加。测试后，执行任务和非执行任务之间的差异相同。发现HRV与认知表现之间存在相关性，且因速度和准确性而异。我们得出结论，HRV与认知需求相关，并且在体育锻炼后HRV与认知表现之间的相关性似乎更强。这些结果引发了关于不同HRV信号的心理生理学意义的问题，这对未来关于HRV与认知之间关系的研究具有启示意义。
