Results 81 to 90 of about 5,416 (214)

A comparison of normobaric and hypobaric hypoxia effects on cerebrovascular response pre and post maximal exercise

Experimental Physiology, EarlyView.
Abstract A lack of consensus remains on whether normobaric hypoxia (NH) and hypobaric hypoxia (HH) may differentially impact physiological factors affecting cerebrovascular regulation, particularly with an additional strenuous exercise component. We sought to compare the acute effects of NH and HH on global cerebral blood flow (gCBF) at an altitude ...
Rachel Turner, Giovanni Vinetti, Giacomo Strapazzon, Hannes Gatterer   +3 more
wiley   +1 more source

Effects of a high‐sugar mixed meal on cerebrovascular haemodynamics in young, healthy versus middle‐aged adults with cardiometabolic risk factors

Experimental Physiology, EarlyView.
Abstract Consumption of a high‐sugar mixed meal (HSMM) increases both glucose and insulin and elicits mixed vascular effects, with reduced microvascular blood flow but increased conduit artery diameter and blood flow. In this study, we sought to examine: (1) whether an HSMM elicits vascular segment‐specific effects within cerebrovasculature; and (2 ...
Krista S. Reed, Molly R. Crew, Abby M. Frescoln, Spencer M. Romanowski, Rudy J. Valentine, Wesley K. Lefferts   +5 more
wiley   +1 more source

Acute ketone monoester ingestion lowers resting cerebral blood flow: a randomized cross‐over trial

The Journal of Physiology, EarlyView.
Abstract figure legend This double‐blind, placebo‐controlled, randomized cross‐over trial investigated the effects of ketone monoester (KME) ingestion on resting cerebral blood flow (CBF) in young adults. We demonstrate that KME supplementation lowers CBF in a dose‐dependent manner over 2‐houra post‐ingestion, whereas CBF remained unchanged following ...
Aedan J. Rourke, Claudia M.S. Yong, Geoff B. Coombs, Addriana R. Odisho, Jenna A. Nash, Jack Bone, Baraa K. Al‐Khazraji, Jeremy J. Walsh   +7 more
wiley   +1 more source

The role of acid‐base balance in cerebrovascular and ventilatory responses to CO2 during 10 h normobaric hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend During 10 h exposures to normobaric hypoxia exposure there was a selective leftward shift in ventilatory response to hyperoxic hypercapnic rebreathing, but not the cerebrovascular response. The key findings are that the resetting of the central chemoreflex to lower PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_2}}}$ during early hypoxic ...
Holly Barclay, Saptarshi Mukerji, Bengt Kayser, Jui‐Lin Fan   +3 more
wiley   +1 more source

The Findings of Transcranial Doppler Ultrasonography in Patients with Ischemic Stroke

Caspian Journal of Neurological Sciences, 2015
Background: Stroke is a multifactorial disorder, the most common cause being arterial occlusion. Transcranial Doppler Ultrasonography (TCD) is a common non-invasive method available for assessment the arterial blood flow of the brain.
Mozaffar Hosseininezhad, Seyed-Ali Roudbary, Iraj Keshavarzi, Seyed-Mohammad-Masood Hojjati, Ehsan Kazemnezhad-Leili   +4 more
doaj  

Assessment: Transcranial Doppler ultrasonography: [RETIRED] [PDF]

, 2004
M. A. Sloan, Andrei V. Alexandrov, Charles H. Tegeler, Merrill P. Spencer, Louis R. Caplan, Edward Feldmann, Lawrence R. Wechsler, David W. Newell, Camilo R. Gomez, Viken L. Babikian, David Lefkowitz, Richard S. Goldman, Carmel Armon, Chung Y. Hsu, Douglas S. Goodin   +14 more
openalex   +1 more source

Arterial–venous differences of brain‐derived neurotrophic factor isoforms across the brain and muscle after exercise at different intensities

The Journal of Physiology, EarlyView.
Abstract figure legend Exercise‐induced increases in forearm venous plasma and serum brain‐derived neurotrophic factor (BDNF) are often assumed to be indicative of release from the brain. Sixteen healthy and physically fit adults (20–40 years old) were recruited to investigate whether exercise‐induced changes in forearm venous mature BDNF (mBDNF) and ...
Olga Tarassova, Yiwen Jiang, Helena Wallin, Mats Jensen‐Urstad, Nikola Drca, Julia Röja, Marjan Pontén, Abram Katz, Jonna Nilsson, Maria M. Ekblom, Marcus Moberg   +10 more
wiley   +1 more source

A Comparative Study of Transcranial Color-Coded Doppler (TCCD) and Transcranial Doppler (TCD) Ultrasonography Techniques in Assessing the Intracranial Cerebral Arteries Haemodynamics

Diagnostics
Cerebrovascular disease (CVD) poses a major public health and socio-economic burden worldwide due to its high morbidity and mortality rates. Accurate assessment of cerebral arteries’ haemodynamic plays a crucial role in the diagnosis and treatment ...
Simon Takadiyi Gunda, Tsam Kit Veronica Ng, Tsz-Ying Liu, Ziman Chen, Xinyang Han, Xiangyan Chen, Marco Yiu-Chung Pang, Michael Tin-Cheung Ying   +7 more
doaj   +1 more source

Ventilatory and cerebrovascular responses to exercise in lowlander children acclimatizing to high‐altitude

The Journal of Physiology, EarlyView.
Abstract figure legend To investigate age‐related differences in ventilatory and cerebrovascular responses to exercise at high‐altitude, adults (n = 10, 23–44 years) and children (n = 8, 7–14 years) completed progressive cycling exercise tests at sea‐level and following 6 days of acclimatization at 3800 m.
J. L. Koep, M. G. Rieger, K. J. Smith, G. R. DuManoir, C. M. Tallon, D. R. Perkins, S. Piombo, M. Stembridge, D. M. Cooper, S. Radom‐Aizik, P. N. Ainslie, A. M. McManus   +11 more
wiley   +1 more source

Transcranial Doppler Ultrasonography of the Basilar Artery in Cerebral Small Vessel Disease

Journal of Education, Health and Sport
This study evaluates the diagnostic value of transcranial Doppler ultrasonography (TCD) of the basilar artery in patients with cerebral small vessel disease (CSVD).
M. Vikarenko
doaj   +1 more source