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最終更新日：2026/06/24
星 大輔
ホシ ダイスケ
(Daisuke Hoshi)
論文
- タイトル
- タイトル（英）
- Effects of Acute Aerobic Exercise and Task Repetition on the Neural Correlates of Executive Function in Young and Older Adults: A Crossover
fMRI Study - 参照URL
- https://researchmap.jp/jpsport_hoshi/published_papers/54237121
- 著者
- 著者（英）
- Ryota Asahara,Marina Fukuie,Daisuke Hoshi,Junyeon Won,Rong Zhang,Jun Sugawara,Takashi Tarumi
- 担当区分
- 概要
- 概要（英）
- ABSTRACT Background Acute aerobic exercise may alter neural recruitment supporting executive function; however, age‐related differences and task repetition effects remain unclear. Purpose To investigate the effects of acute aerobic exercise and task repetition on brain activity during task switching in young and older adults. Study Type Prospective randomized crossover study. Population Seventeen young and nineteen older healthy adults (18 females). Field Strength/Sequence 3. 0 T , BOLD fMRI. Assessment fMRI was conducted during a task‐switching paradigm before and at 15 and 45 min following 30 min of moderate‐intensity walking or sitting on separate days. Neural and behavioral switch costs were computed as differences in BOLD activation, reaction time, and error rates between switch and nonswitch trials. Statistical Tests Linear mixed‐effects model examined BOLD signals and behavioral performance. Repeated measures correlation examined within‐subject associations. p < 0.05 was considered statistically significant. Results Older adults exhibited significantly greater task‐related BOLD activation in the bilateral superior frontal and middle temporal gyri, right angular gyrus, and left precuneus than young adults, despite slightly lower performance ( p ≤ 0.002). Task repetition significantly reduced activation in the left middle occipital and middle frontal gyri and right cerebellar cortex in both groups, whereas reaction time significantly improved only in older adults. Following walking, activation in the right dorsolateral prefrontal cortex remained stable in older adults but significantly decreased in young adults, without corresponding behavioral changes ( p ≥ 0.365). Regardless of age, activation in the right postcentral gyrus and bilateral superior parietal lobules remained stable after walking but significantly decreased after sitting. Reduced activation with task repetition was significantly associated with faster reaction time, particularly in older adults. Data Conclusion Acute aerobic exercise may preserve regional brain activation without measurable behavioral benefits, whereas task repetition reduces brain activation across age groups, suggesting modest neural effects of acute aerobic exercise on executive function. Level of Evidence 2. Technical Efficacy Stage 2.
- 出版者・発行元
- 出版者・発行元（英）
- Wiley
- 誌名
- 誌名（英）
- Journal of Magnetic Resonance Imaging
- 巻
- 号
- 開始ページ
- 終了ページ
- 出版年月
- 2026年6月10日
- 査読の有無
- 査読有り
- 招待の有無
- 掲載種別
- 研究論文（学術雑誌）
- ISSN
- 1053-1807
- DOI URL
- https://doi.org/10.1002/jmri.70329
- 共同研究・競争的資金等の研究課題