关键词: Acute aerobic exercise Exercise intensity Fitness level Motor cortex Resting state functional connectivity

Mesh : Humans Motor Cortex / physiology diagnostic imaging Exercise / physiology Male Female Students Young Adult Rest / physiology Adult Universities Spectroscopy, Near-Infrared / methods

来  源:   DOI:10.1038/s41598-024-63140-6   PDF(Pubmed)

Abstract:
This study intends to inspect the effects of acute aerobic exercise (AE) on resting state functional connectivity (RSFC) in motor cortex of college students and the moderating effect of fitness level.
20 high fitness level college students and 20 ordinary college students were recruited in public. Subjects completed 25 min of moderate- and high-intensity acute aerobic exercise respectively by a bicycle ergometer, and the motor cortex\'s blood oxygen signals in resting state were monitored by functional Near Infrared Spectroscopy (fNIRS, the Shimadzu portable Light NIRS, Japan) in pre- and post-test.
At the moderate intensity level, the total mean value of RSFC pre- and post-test was significantly different in the high fitness level group (pre-test 0.62 ± 0.18, post-test 0.51 ± 0.17, t(19) = 2.61, p = 0.02, d = 0.58), but no significant change was found in the low fitness level group. At the high-intensity level, there was no significant difference in the difference of total RSFC between pre- and post-test in the high and low fitness group. According to and change trend of 190 \"edges\": at the moderate-intensity level, the number of difference edges in the high fitness group (d = 0.58, 23) were significantly higher than those in the low fitness group (d = 0.32, 15), while at high-intensity level, there was a reverse trend between the high fitness group (d = 0.25, 18) and the low fitness group (d = 0.39, 23).
moderate-intensity AE can cause significant changes of RSFC in the motor cortex of college students with high fitness, while high fitness has a moderating effect on the relationship between exercise intensity and RSFC. RSFC of people with high fitness is more likely to be affected by AE and show a wider range of changes.
摘要:
本研究旨在考察急性有氧运动(AE)对大学生运动皮层静息状态功能连接(RSFC)的影响及健身水平的调节作用。
公开招募了20名高健身水平大学生和20名普通大学生。受试者通过自行车测功机分别完成25分钟的中等强度和高强度急性有氧运动,通过功能近红外光谱(fNIRS,岛津便携式轻型NIRS,日本)在测试前和测试后。
在中等强度水平,高适应度组的RSFC前后测试的总平均值有显著差异(前测0.62±0.18,后测0.51±0.17,t(19)=2.61,p=0.02,d=0.58),但在低适应度组没有发现显著变化。在高强度水平,高、低适应性组试验前后总RSFC差异无统计学意义。根据190个“边缘”的变化趋势:在中等强度水平,高适应度组(d=0.58、23)的差异边数显著高于低适应度组(d=0.32、15),在高强度水平下,高适应度组(d=0.25,18)和低适应度组(d=0.39,23)之间存在相反的趋势。
中等强度AE可引起高适应度大学生运动皮层RSFC的显著变化,高体能对运动强度与RSFC的关系有调节作用。高体质人群的RSFC更容易受到AE的影响,并且表现出更广泛的变化。
公众号