Functional circuit training (FCT) has been demonstrated to acutely enhance cognitive performance (CP). However, the moderators of this observation are unknown. This study aimed to elucidate the role of exercise intensity. According to an a priori sample size calculation, n = 24 healthy participants (26 ± 3 years, 13 females), in randomized order, performed a single 15-min bout of FCT with low (20–39% of the heart rate reserve/HRR), moderate (40–59% HRR) or high intensity (maximal effort). Immediately pre- and post-workout, CP was measured by use of the Digit Span test, Stroop test and Trail Making test. Non-parametric data analyses did not reveal significant differences between conditions (p > 0.05) although parameter-free 95% confidence intervals showed pre-post improvements in some outcomes at moderate and high intensity only. The effort level does not seem to be a major effect modifier regarding short-term increases in CP following HCT in young active adults.

中文翻译：

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运动强度可能不会降低功能电路训练对认知功能的急性影响：一项随机交叉试验

功能电路训练（FCT）已被证明可以大大提高认知能力（CP）。但是，这种观察的主持人是未知的。这项研究旨在阐明运动强度的作用。根据先验样本量计算，n = 24名健康参与者（26±3岁，13名女性），以随机顺序进行了15分钟的单程FCT，低（20-39％的心率储备/ HRR），中度（40-59％HRR）或高强度（最大努力）。立即进行锻炼前和锻炼后，通过使用数字跨度测试，Stroop测试和跟踪制作测试来测量CP。非参数数据分析未显示条件之间的显着差异（p> 0.05），但无参数的95％置信区间仅在中等强度和高强度下显示了某些结果的事后改善。对于年轻活跃的成年人，HCT后CP短期增加，努力程度似乎不是主要的影响因素。