Department of Physical Therapy, Niigata University of Health and Welfare, Niigata 950-3198, Japan.
Department of Rehabilitation, Kobe City Medical Center General Hospital, Kobe-city 650-0047, Japan.
Int J Environ Res Public Health. 2021 May 14;18(10):5212. doi: 10.3390/ijerph18105212.
Differences in cognitive performance with exercise between men and women have previously been reported. In this study, we evaluated between-sex differences in oxygenation of the prefrontal cortex (PFC) with moderate-intensity aerobic exercise (AE), which could contribute to noted differences in cognitive function.
The subjects were ten men (age, 21.5 ± 0.5 years; height, 171.7 ± 4.8 cm; weight, 65.6 ± 5.6 kg) and ten women (age, 21.4 ± 0.5 years; height, 157.6 ± 4.9 cm; weight, 51.3 ± 6.5 kg). They completed our AE protocol, consisting of a 30-min leg-ergometer cycling at an intensity of 50% peak oxygen uptake, with an initial 4-min rest period for baseline measurement. Measures of the dynamics of cerebral oxygenation included: oxygenated hemoglobin (O2Hb) in the left and right PFC (LR-PFC) and deoxygenated hemoglobin (HHb). The 30-min exercise period was subdivided into six 5-min phases, with the average and peak values determined in each phase.
A significant interaction was found between LR-PFC HHb and sex ( < 0.001), with significantly higher values in men than in women in phases 3-6 ( < 0.05).
We report a significant sex effect of HHb in the LR-PFC.
先前已有研究报道，男性和女性在认知表现方面存在运动差异。在这项研究中，我们评估了中等强度有氧运动（AE）对前额叶皮层（PFC）氧合作用的性别差异，这可能有助于解释认知功能的显著差异。
研究对象为 10 名男性（年龄 21.5 ± 0.5 岁；身高 171.7 ± 4.8cm；体重 65.6 ± 5.6kg）和 10 名女性（年龄 21.4 ± 0.5 岁；身高 157.6 ± 4.9cm；体重 51.3 ± 6.5kg）。他们完成了我们的 AE 方案，包括 30 分钟的腿部功率计自行车运动，强度为 50%峰值摄氧量，初始 4 分钟休息期用于基线测量。脑氧合动力学的测量指标包括：左、右 PFC（LR-PFC）中的氧合血红蛋白（O2Hb）和去氧血红蛋白（HHb）。30 分钟的运动期分为六个 5 分钟的阶段，每个阶段确定平均值和峰值。
LR-PFC HHb 与性别之间存在显著的交互作用（<0.001），在第 3-6 阶段男性的 HHb 值明显高于女性（<0.05）。
我们报告了 LR-PFC HHb 存在显著的性别效应。
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