- Title
- The effect of baroreflex adaptation on the dynamic cardiovascualr response to head-up tilt
- Creator
- Newman, David G.; White, Saxon William; Callister, Robin
- Relation
- Aviation, Space, and Environmental Medicine Vol. 71, Issue 3, p. 255-259
- Relation
- http://www.asma.org/publications/asem-journal/read-the-journal
- Publisher
- Aerospace Medical Association
- Resource Type
- journal article
- Date
- 2000
- Description
- Background: Baroreflex adaptation to repetitive +Gz has been reported previously. The underlying mechanism may involve different responses of stroke volume (SV) and total peripheral resistance (TPR) to +Gz. Hypothesis: The previously observed enhanced mean arterial pressure (MAP) regulation in fighter pilots (FP) is mediated by increases in SV and/or TPR. Methods: There were 8 pilots and 12 non-pilots who underwent head-up tilt. SV was determined using impedance cardiography. Results: MAP increased significantly in FP, due to heart rate (HR) and TPR increasing more and SV decreasing less. Conclusion: Baroreflex adaptation results in better performance of HR, SV and TPR in response to +Gz.
- Subject
- stroke volume; peripheral resistance; impedance cardiography; +Gz; tilt; postural; acceleration; baroreflex; cardiovascular; adaptation
- Identifier
- http://hdl.handle.net/1959.13/936028
- Identifier
- uon:12190
- Identifier
- ISSN:0095-6562
- Language
- eng
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