Cerebral Oxygenation Dynamics During Incremental Exercise: Comparison of Arm Cranking and Leg Cycling
Cerebral Oxygenation Dynamics During Incremental Exercise: Comparison of Arm Cranking and Leg Cycling
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增量运动期间的脑氧合动态：手臂摇动和腿部骑自行车的比较
DOI：
10.1007/978-3-030-48238-1_20
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发表时间：
2021
影响因子：
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通讯作者：
Tsubaki A.
中科院分区：
文献类型：
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作者：
Hashimoto K.;Hotta K.;Morishita S.;Kanai R.;Takahashi H.;Tsubaki A.
本研究旨在比较12名年龄为20.8 ± 0.2岁的健康成年男性在骑自行车与摇臂递增运动期间的脑氧合血红蛋白（O2 Hb）水平。用近红外光谱法测定O2 Hb。感兴趣的区域包括左侧和右侧前额叶皮质（分别为LtPFC和RtPFC）、左侧和右侧运动前皮质（分别为LtPMC和RtPMC）以及双侧辅助运动区（SMA）。休息4分钟后，通过使用测力计进行4分钟的热身，然后进行递增运动（对于手臂摇动，增加5 W/min的工作速率，对于骑自行车运动，增加20 W/min的工作速率）。所有的值都是从增量运动开始到终点的参与者运动时间段的每十分之一的平均值。在中等运动强度（50%的运动时间），在所有感兴趣的区域获得的平均O2 Hb值似乎更高，在手臂曲柄运动相比，骑自行车，但是，有两种类型的运动之间没有显着差异。在增量运动的终点（100%运动时间），与骑自行车相比，在所有感兴趣区域获得的O2 Hb在手臂摇动运动期间显著更高（LtPFC 0.081 ± 0.019 vs. -0.001 ± 0.013 mM·cm，RtPFC 0.076 ± 0.021 vs. 0.018 ± 0.015 mM·cm，SMA 0.012 ± 0.040 vs. 0.040 ± 0.016 mM·cm;分别为：摇臂vs.骑自行车;p< 0.05）。我们的结论是，运动引起的脑氧合是更大的手臂曲柄比腿骑自行车。
This study aimed to compare cerebral oxyhemoglobin (O2Hb) levels during incremental exercise by cycling vs. arm cranking in 12 healthy adult men aged 20.8 ± 0.2 years old. O2Hb was measured by near-infrared spectroscopy. Regions of interest included the left and right prefrontal cortices (LtPFC and RtPFC, respectively), the left and right premotor cortices (LtPMC and RtPMC, respectively), and the supplementary motor area (SMA) bilaterally. After 4 min of rest, 4 min of warm-up was performed by using ergometer followed by incremental exercise (increasing work rate by 5 W/min for arm cranking and 20 W/min for cycling exercise). All values were averaged every tenth of the participant’s exercise time period from beginning of incremental exercise to end point. At the middle exercise intensity (50% exercise time), the averaged O2Hb values obtained at all regions of interest seemed to be higher during arm cranking exercise as compared to cycling; however, there were no significant differences between two types of exercise. At the end point of incremental exercise (100% exercise time), the O2Hb obtained at all regions of interest was significantly higher during arm cranking exercise compared to cycling (LtPFC 0.081 ± 0.019 vs. –0.001 ± 0.013 mM·cm, RtPFC 0.076 ± 0.021 vs. 0.018 ± 0.015 mM·cm, SMA 0.012 ± 0.040 vs. 0.040 ± 0.016 mM·cm; arm cranking vs. cycling;p< 0.05, respectively). We conclude that exercise-induced cerebral oxygenation is greater with arm cranking than with leg cycling.