Key result
Moderate-intensity aerobic exercise demonstrated a significant sex effect on deoxygenated hemoglobin in the left and right prefrontal cortex (P<0.05).
Why the study?
Differences in cognitive performance with exercise between men and women have been reported, prompting evaluation of between-sex differences in prefrontal cortex oxygenation during moderate-intensity aerobic exercise.
Does moderate-intensity aerobic exercise elicit different prefrontal cortex oxygenation responses between men and women?
Observational (n=20)
Does moderate-intensity aerobic exercise elicit different prefrontal cortex oxygenation responses between men and women?
p-value: p=< 0.05
Moderate-intensity aerobic exercise elicits significant sex differences in deoxygenated hemoglobin levels in the prefrontal cortex.
Sex differences in prefrontal oxygenation during moderate exercise may exist; hypothesis-generating and requires prospective confirmation before clinical consideration.
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: < 0.05). CONCLUSION: We report a significant sex effect of HHb in the LR-PFC.
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Inagaki et al. (2021) reported an observational. Moderate-intensity aerobic exercise vs. Between-sex comparison (Men vs Women) was evaluated on Dynamics of cerebral oxygenation (O2Hb and HHb in the left and right prefrontal cortex) (p=< 0.05). Moderate-intensity aerobic exercise demonstrated a significant sex effect on deoxygenated hemoglobin in the left and right prefrontal cortex (P<0.05).
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