高強度間歇運動對大腦血流及認知功能急性反應之探討

Acute physiological responses of cerebral blood flow and cognitive function to high-intensity interval exercise

曹語倢(Yu-Chieh Tsao) ； 陳喬男(Chiao-Nan Chen) ； 廖翊宏(Yi-Hung Liao)

《中華體育季刊》 34卷2期 (2020/06) Pp. 121-130

https://doi.org/10.6223/qcpe.202006_34(2).0005

摘要

高強度間歇運動（high intensity interval exercise, HIIE）的特徵是短時間、多回合的高強度運動，回合間穿插恢復時間來進行。已知高強度間歇運動能有效提升有氧耐力、肌力及增進心血管健康、促進合成代謝激素分泌。但是，關於間歇運動對大腦血流調控與認知功能之潛在影響與相互關連性，目前探討的研究仍然不多。因此，本文將以高強度間歇運動對大腦血流及認知功能急性反應為主軸，透過文獻回顧方式整合現有科學證據，逐節探討高強度間歇運動之健康效益、間歇運動型態差異對認知功能之影響、急性運動對認知功能與大腦血流之關聯性等議題；同時，進一步評析可能涉入之生理機制。文獻回顧指出，強度在75%以上之高強度運動能促進腦血管生成，增加大腦血流量、促進腦部神經細胞活動，進而增進認知行為表現及學習力，對認知功能及大腦血流有正向效益。然而，當運動強度過高，較容易因神經疲勞產生反效果。而對於不同時間間隔運動模式對腦血流及認知功能的影響研究仍有限，且在運動後提升大腦血流量是否能一併提升認知功能現今也未有定論。對此，建議未來研究，可設計不同強度或不同持續時間之高強度間歇運動，以期更有利於此運動增強認知功能及大腦血流之效益。

關鍵字

急性運動 ； 間歇運動 ； 大腦血流動力參數 ； 注意力 ； 反應速度

並列摘要

High intensity interval exercise (HIIE) is a short-term, multi-round, high-intensity exercise with interpolated recovery time between rounds. HIIE has been reported to effectively improve aerobic fitness, muscle strength, cardiovascular fitness, and increase releasing of anabolic hormones. But, there are still limited studies investigating the acute effects of high-intensity interval exercise on the regulations of cerebral hemodynamics and cognitive functions, and the interactive relationships among these are still rarely discussed. Therefore, through integrating currently existing literature, this review here focus on the health benefits of high-intensity exercise, impacts of the varied setting of interval exercise on cognitive performance and cerebral hemodynamics regulation. Additionally, the involved underlying physiological mechanisms are discussed as well. Recent literature suggests that the exercise intensity above 75% maximal effort can increase cerebral angiogenesis, cerebral blood flow, promote brain neurons activity, and thus enhance cognitive performance and learning; in contrast, when the exercise intensity reaches to certain levels (e.g. ＞85% VO_2max), it is more likely to induce adverse effects on cognitive performance due to neural fatigue. However, there are very limited investigations focusing on the impacts of different interval exercise models on the regulations of cerebral hemodynamics and cognition. Moreover, it is still controversial whether the enhancing cognitive function in response to acute exercise is directly mediated through the increase in cerebral blood flow. Altogether, we recommend that future studies can design HIIE with different intensities or durations, which may help to elucidate the underlying mechanisms for the benefits of exercise-enhanced cognitive function and cerebral blood flow.

並列關鍵字

acute exercise ； interval exercise ； cerebral hemodynamics ； attention ； reaction speed

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