PMC5269417_01
Mean arterial pressure (MAP) (A), End-tidal partial pressure of carbon dioxide (PETCO
2) (B), middle cerebral artery mean blood flow velocity (MCAvmean) (C), and frontal cerebral oxygenation (ScO2) (D) in function of time (sec) during exertion test and exercise workloads (W). Vertical dotted line represents the beginning of exercise.
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MCAvmean increased by 20% and did not return to baseline values notwithstanding the presence of hyperventilation-induced hypocapnia at higher exercise intensities (Fig. 1).