Acute moderate exercise has been shown to induce prolonged changes in functional connectivity (FC) within affect and reward networks. The influence of different exercise intensities on FC has not yet been explored. Twenty-five male athletes underwent 30 min of “low”- ( (LT)) and “high”- () intensity exercise bouts on a treadmill. Resting-state fMRI was acquired at 3 Tesla before and after exercise, together with the Positive and Negative Affect Scale (PANAS). Data of 22 subjects (3 dropouts) were analyzed using the FSL feat pipeline and a seed-to-network-based analysis with the bilateral amygdala as the seed region for determining associated FC changes in the “emotional brain.” Data were analyzed using a repeated measures ANOVA. Comparisons between pre- and post-exercise were analyzed using a one-sample -test, and a paired -test was used for the comparison between “low” and “high” exercise conditions (nonparametric randomization approach, results reported at ). Both exercise interventions induced significant increases in the PANAS positive affect scale. There was a significant interaction effect of amygdalar FC to the right anterior insula, and this amygdalar-insular FC correlated significantly with the PANAS positive affect scale (, ) in the “high”-intensity exercise condition. Our findings suggest that mood changes after exercise are associated with prolonged alterations in amygdalar-insular FC and occur in an exercise intensity-dependent manner.

中文翻译：

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高强度运动后的情感调节与杏仁核-岛状功能连接时间延长相关。

急性中度锻炼已被证明可在情感和奖励网络中引起功能连通性（FC）的长期变化。尚未探讨不同运动强度对FC的影响。25名男运动员经历了30分钟的“低潮”-（ （LT））和“高”-（）在跑步机上进行剧烈运动。运动前后分别在3特斯拉获得了静止状态功能磁共振成像，以及正面和负面影响量表（PANAS）。使用FSL专长管道和基于种子到网络的分析（以双侧杏仁核作为种子区域来确定“情感性大脑”中相关的FC变化）来分析22名受试者（3名辍学者）的数据。使用重复测量方差分析分析数据。使用单试样进行分析前，后运动之间的比较-测试和配对-用于“低”和“高”的锻炼条件（非参数的随机化方法之间的比较测试，结果报道）。两种运动干预均导致PANAS积极影响量显着增加。杏仁核FC对右前岛突有显着的相互作用作用，并且该杏仁核-岛状FC与PANAS阳性影响量显着相关（， ）处于“高强度”运动状态。我们的发现表明，运动后的情绪变化与杏仁核-岛状FC的长期改变有关，并以运动强度依赖性的方式发生。