The Effects of Cold and Lower Body Negative Pressure on Cardiovascular Homeostasis
Joint Authors
Kean, David J.
Peacock, Corey A.
Sanders, Gabriel J.
McDaniel, John
Colvin, Lisa A. C.
Glickman, Ellen
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-19
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Purpose.
The purpose of this study is to determine how cold exposure and lower body negative pressure effected cardiovascular variables.
Methods.
Eleven males (20.3 years ± 2.7) underwent two 20-minute exposures to LBNP.
During the 2 trials, the subjects were exposed to cold air (10°C) (COLD) and to ambient temperature (23°C) (AMB).
The trials consisted of a 100-minute pre-LBNP period followed by a 20-minute exposure to LBNP and then a 15-minute recovery period.
Cardiovascular variables were recorded every 30 minutes using bioimpedance.
Results.
When LBNP was applied during the AMB trials, stroke volume immediately decreased.
During the COLD trial, there was a five-minute delay before the decrease in stroke volume.
Heart rate increased immediately after LBNP initiation during the AMB trials but there was a delay in the increase during the COLD trials.
That same pattern was followed with mean arterial blood pressures.
Cerebral oxygenation was significantly lower throughout the COLD trial as compared to the AMB trials.
Six subjects reported symptoms of syncope or presyncope during the AMB trials but there were no reports of symptoms during the COLD trials.
Conclusion.
From analysis of this data, cold improved the subject’s tolerance to LBNP.
American Psychological Association (APA)
Kean, David J.& Peacock, Corey A.& Sanders, Gabriel J.& McDaniel, John& Colvin, Lisa A. C.& Glickman, Ellen. 2015. The Effects of Cold and Lower Body Negative Pressure on Cardiovascular Homeostasis. BioMed Research International،Vol. 2015, no. 2015, pp.1-6.
https://search.emarefa.net/detail/BIM-1056527
Modern Language Association (MLA)
Kean, David J.…[et al.]. The Effects of Cold and Lower Body Negative Pressure on Cardiovascular Homeostasis. BioMed Research International No. 2015 (2015), pp.1-6.
https://search.emarefa.net/detail/BIM-1056527
American Medical Association (AMA)
Kean, David J.& Peacock, Corey A.& Sanders, Gabriel J.& McDaniel, John& Colvin, Lisa A. C.& Glickman, Ellen. The Effects of Cold and Lower Body Negative Pressure on Cardiovascular Homeostasis. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-6.
https://search.emarefa.net/detail/BIM-1056527
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1056527