| Cerebral hemodynamic reactions to low-intensity physical exercise. | |
| | |
MedLine Citation:
|
PMID: 19517246 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Cerebral hemodynamic reactions to light physical exercise increasing stepwise on a bicycle ergometer were studied in healthy young male subjects. Hemodynamic parameters were measured by transcranial Doppler ultrasonography from the middle cerebral artery (MCA) before the start of the study and during the last few seconds of each exercise step. Cerebral hemodynamic reactions to physical exercise were characterized by a significant increase in systolic blood flow rate in the middle cerebral artery only at exercise levels of about 0.25 W/kg body weight (90 rpm at 0 W/kg) with no further increase in the blood flow rate with increases in loading to 0.5 W/kg body weight. The mechanism stabilizing blood flow rate in the cerebral arteries as physical exercise increased and, thus, the mechanism of cerebral circulatory autoregulation consisted of a arterial pressure-dependent increase in regional cerebral vascular resistance. The threshold at which the cerebral blood flow rate autoregulatory mechanism was triggered in normal subjects corresponded to a loading of about 0.25 W/kg and a systolic arterial pressure of about 140-145 mmHg. |
| | |
Authors:
|
V P Kulikov; N L Doronina; K K Gatal'skii |
Related Documents
:
|
20605946 - Exercise training improves muscle vasodilatation in individuals with t786c polymorphism... 7836206 - Modification of forearm resistance vessels by exercise training in young men. 19966056 - Exercise-induced brachial artery vasodilation: effects of antioxidants and exercise tra... 8847306 - Effects of exercise training on responses of peripheral and visceral arteries in swine. 22579916 - The impact of forced joint exercise on lubricin biosynthesis from articular cartilage f... 2055856 - Exercise endurance and arterial desaturation in normobaric hypoxia with increased chemo... |
Publication Detail:
|
Type: Journal Article Date: 2009-06-11 |
Journal Detail:
|
Title: Neuroscience and behavioral physiology Volume: 39 ISSN: 1573-899X ISO Abbreviation: Neurosci. Behav. Physiol. Publication Date: 2009 Jul |
Date Detail:
|
Created Date: 2009-06-17 Completed Date: 2009-08-27 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0330471 Medline TA: Neurosci Behav Physiol Country: United States |
Other Details:
|
Languages: eng Pagination: 581-6 Citation Subset: IM |
Affiliation:
|
Federal Agency for Health and Social Development, Altai State Medical University, Altai Region, Russia. kulikov@asmu.ru |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Blood Flow Velocity Cerebrovascular Circulation* Coronary Circulation Exercise* Hemodynamics* Humans Male |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: The contribution of serotonin 1A receptors to kappa opioid immunosuppression.
Next Document: Efficacy and safety of memantine in Lewy body dementia.