American Journal of Physiology. Heart and Circulatory Physiology This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Cerebral sympatholysis: experiments on < em > in vivo < /em > cerebrovascular regulation and < em > ex vivo < /em > cerebral vasomotor control
This study tested the hypothesis that application or removal of a cognitive task during a cold pressor test (CPT) would attenuate and restore decreases in cerebrovascular conductance (CVC), respectively. Middle cerebral artery blood velocity (transcranial Doppler) and mean arterial pressure (finger photoplethysmography) were examined in healthy adults (n=16; 8 F and 8 M) who completed a control CPT, followed by a CPT coupled with a cognitive task administered either A) 30 s after the onset of the CPT and for the duration of the CPT or B) at the onset of the CPT and terminated 30 s prior to the end of the CPT (condition ord...
Source: American Journal of Physiology. Heart and Circulatory Physiology - February 23, 2024 Category: Physiology Authors: Adam M S Luchkanych Cameron J Morse Natasha G Boyes M Rafique Khan Rory A Marshall Jude S Morton Corey R Tomczak T Dylan Olver Source Type: research

Differences in cardiac adaptation to exercise in male and female athletes assessed by non-invasive techniques - a state of the art review
Am J Physiol Heart Circ Physiol. 2024 Feb 23. doi: 10.1152/ajpheart.00756.2023. Online ahead of print.ABSTRACTAthlete's heart is generally regarded as a physiological adaptation to regular training, with specific morphological and functional alterations in the cardiovascular system. Development of the non-invasive imaging techniques over the last several years enabled better assessment of cardiac remodeling in athletes, which may eventually mimic certain pathological conditions with the potential for sudden cardiac death, or disease progression. The current literature provides a compelling overview of the available methods...
Source: American Journal of Physiology. Heart and Circulatory Physiology - February 23, 2024 Category: Physiology Authors: Zofia Lasocka-Koriat Zuzanna Lewicka-Potocka Anna Kaleta-Duss Anna Siekierzycka Leszek Kalinowski Ewa Lewicka Alicja D ąbrowska-Kugacka Source Type: research

Impact of coronary hyperemia on collateral flow correction of coronary microvascular resistance indices
Conclusion - We validated the calculation method for Pw-corrected MR in a Doppler-velocity derived population. In addition, we found a significant impact of hyperemic conditions on the measurement of Pw and the derivation of Pw-corrected HMR.PMID:38391315 | DOI:10.1152/ajpheart.00771.2023 (Source: American Journal of Physiology. Heart and Circulatory Physiology)
Source: American Journal of Physiology. Heart and Circulatory Physiology - February 23, 2024 Category: Physiology Authors: Coen K M Boerhout Anna van Veelen Rutger G T Feenstra Elize A M de Jong Hanae F Namba Marcel A M Beijk Jose P Henriques Jan J Piek Tim P van de Hoef Source Type: research

Vascular adaptation to exercise: A systematic review and audit of female representation
Am J Physiol Heart Circ Physiol. 2024 Feb 23. doi: 10.1152/ajpheart.00788.2023. Online ahead of print.ABSTRACTBiological sex is a salient factor in exercise-induced vascular adaptation. While a male bias is apparent in the literature, the methodological quality of available studies in females is not yet known. This systematic review with narrative synthesis aimed to assess available evidence of exercise interventions on endothelial function, measured using flow-mediated dilation, in otherwise healthy individuals and athletes. A standardized audit framework was applied to quantify the representation of female participants. ...
Source: American Journal of Physiology. Heart and Circulatory Physiology - February 23, 2024 Category: Physiology Authors: Sarah L Thompson Carly Brade Sarah R Henley-Martin Louise H Naylor Angela L Spence Source Type: research