Hu Min, Zeng Ningning, Gu Zhongke, Zheng Yuqing, Xu Kai, Xue Lian, Leng Lu, Lu Xi, Shen Ying, Huang Junhao
Guangdong Provincial Key Laboratory of Sports and Health Promotion, Scientific Research Center, Guangzhou Sport University, Guangzhou, China.
Shenzhen Key Laboratory of Affective and Neuroscience, Center for Brain Disorders and Cognitive Sciences, Shenzhen University, Shenzhen, China.
Front Hum Neurosci. 2021 Apr 23;15:620958. doi: 10.3389/fnhum.2021.620958. eCollection 2021.
Previous research has demonstrated that regular exercise modulates motor cortical plasticity and cognitive function, but the influence of short-term high-intensity interval training (HIIT) remains unclear. In the present study, the effect of short-term HIIT on neuroplasticity and executive function was assessed in 32 sedentary females. Half of the participants undertook 2 weeks of HIIT. Paired-pulse transcranial magnetic stimulation (ppTMS) was used to measure motor cortical plasticity via short intracortical inhibition (SICI) and intracortical facilitation (ICF). We further adapted the Stroop task using functional near-infrared spectroscopy (fNIRS) to evaluate executive function in the participants. The results indicated that, compared with the control group, the HIIT group exhibited decreased ICF. In the Stroop task, the HIIT group displayed greater activation in the left dorsolateral prefrontal cortex (DLPFC) and left orbitofrontal cortex (OFC) even though no significant difference in task performance was observed. These findings indicate that short-term HIIT may modulate motor cortical plasticity and executive function at the neural level.
先前的研究表明，规律运动可调节运动皮层可塑性和认知功能，但短期高强度间歇训练（HIIT）的影响仍不明确。在本研究中，对32名久坐不动的女性进行了短期HIIT对神经可塑性和执行功能影响的评估。一半参与者进行了为期2周的HIIT。采用配对脉冲经颅磁刺激（ppTMS）通过短皮质内抑制（SICI）和皮质内易化（ICF）来测量运动皮层可塑性。我们还使用功能近红外光谱（fNIRS）对Stroop任务进行了调整，以评估参与者的执行功能。结果表明，与对照组相比，HIIT组的ICF降低。在Stroop任务中，尽管未观察到任务表现有显著差异，但HIIT组在左侧背外侧前额叶皮层（DLPFC）和左侧眶额皮层（OFC）表现出更大的激活。这些发现表明，短期HIIT可能在神经水平上调节运动皮层可塑性和执行功能。
