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.
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。