Visual impairment intracranial pressure (VIIP) syndrome is considered an unexplained
major risk for future long-duration spaceflight. NASA recently redefined this syndrome as …

Ageing is the primary risk factor for cognitive deterioration. Given that the cerebral blood flow
(CBF) or regulation of cerebral circulation is attenuated in the elderly, it could be expected …

Presently, the literature describing the influence of diurnal variation on dynamic cerebral
autoregulation (dCA) metrics is sparse. Additionally, there is little data with respect to dCA …

Resistance exercise (RE) is a popular modality for the general population and athletes alike,
due to the numerous benefits of regular participation. The acute response to dynamic RE is …

We sought to determine whether gravity-induced changes in intracranial pressure influence
cerebral blood flow regulation. Accordingly, nine young healthy men were studied while …

New Findings What is the central question of this study? The extent to which weightlessness
associated with a fluid shift from the peripheral to the central circulation influences the blood …

Pulse contour analysis of the noninvasive finger arterial pressure waveform provides a
convenient means to estimate cardiac output (Q̇). The method has been compared with …

Transcranial Doppler ultrasonography (TCD) is used widely to evaluate dynamic cerebral
autoregulation (dCA). However, the validity of TCD-determined dCA remains unknown …

BACKGROUND Anaesthesia reduces mean arterial pressure (MAP), and to preserve organ
perfusion, vasopressors are often used to maintain MAP above 60 mmHg. Cognitive …

The present study examined the effect of muscle metaboreflex on blood flow in different
cerebral arteries. Eleven healthy participants performed isometric, one-leg knee extension at …