Sex Differences in the Oxygenation of the Left and Right Prefrontal Cortex during Moderate-Intensity Exercise

Introduction: 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 diffe...

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Published inInternational journal of environmental research and public health Vol. 18; no. 10; p. 5212
Main Authors Inagaki, Yuta, Sato, Reo, Uchiyama, Takashi, Kojima, Sho, Morishita, Shinichiro, Qin, Weixiang, Tsubaki, Atsuhiro
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 14.05.2021
MDPI
Subjects
Aerobics
Age
Cardiovascular disease
Cognitive ability
Deoxygenation
Estrogens
Exercise
Gender aspects
Gender differences
Heart rate
Hemoglobin
Muscle strength
Oxygen consumption
Oxygen uptake
Oxygenation
Physical fitness
Prefrontal cortex
Sex
Sex differences
Testosterone
Womens health
Workloads
Japan
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Summary:Introduction: 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. Method: 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. Results: A significant interaction was found between LR-PFC HHb and sex (p < 0.001), with significantly higher values in men than in women in phases 3–6 (p < 0.05). Conclusion: We report a significant sex effect of HHb in the LR-PFC.
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ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph18105212