American Physiological Society, Journal of Applied Physiology, 1(130), p. 172-181, 2021
DOI: 10.1152/japplphysiol.00396.2020
Full text: Unavailable
Impedance modulus at the first harmonics of cerebral blood flow velocity (CBFV) and carotid artery pressure oscillations (Z1) was higher in the old (>64 yr) than in the young individuals (<45 yr), and it was higher in men than in women. Z1 is negatively associated with CBFV after adjustment for age, sex, and body mass index. Increases in cerebrovascular impedance with age may buffer systemic arterial pressure fluctuations at the cost of increased brain hypoperfusion risk.