Journal of Applied Physiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 52: 184-189, 1982;
8750-7587/82 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ebert, T. J.
Right arrow Articles by Smith, J. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ebert, T. J.
Right arrow Articles by Smith, J. J.

Journal of Applied Physiology, Vol 52, Issue 1 184-189, Copyright © 1982 by American Physiological Society

ARTICLES

Summated circulatory responses of thermal and baroreflexes in humans

T. J. Ebert, D. F. Stowe, J. A. Barney, J. H. Kalbfleisch and J. J. Smith

Baroreceptor and thermal receptor mediated reflexes are important neural control systems that can markedly alter blood pressure in humans. These two systems have different afferent limbs and are integrated at different central sites. Although the circulatory effects of activating these individual reflexes have been examined, the effects of simultaneous activation of two or more separate reflexes have received relatively little attention. We used noninvasive methods in 13 normal men (20-27 yr) to examine the responses mediated by cardiopulmonary and arterial baroreceptors; the reflexes were elicited by alterations in central blood volume [lower body negative pressure (LBNP) and leg elevation (LE)] in the presence or absence of local thermal receptor stimulation induced by hand immersion (HI) in 10 degree C water. During all levels (-10, -25, and -40 Torr) of LBNP and during LE, forearm vascular resistance (FVR) was altered. At the two higher levels of LBNP, stroke volume, cardiac index, and blood pressure (BP) decreased, and heart rate (HR) and total peripheral resistance (TPR) increased. TPR, FVR, and BP increased during HI. Our analyses indicated that responses to combined stimuli, i.e., local cold during LBNP or LE, resulted in simple additive responses in all variables except HR. A central interaction between thermal and baroreflex control of HR is possible.


This article has been cited by other articles:


Home page
 CirculationHome page
Q. Fu, S. Witkowski, and B. D. Levine
Vasoconstrictor Reserve and Sympathetic Neural Control of Orthostasis
Circulation, November 2, 2004; 110(18): 2931 - 2937.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
W. S. Journeay, F. D. Reardon, and G. P. Kenny
Cardiovascular responses to apneic facial immersion during altered cardiac filling
J Appl Physiol, June 1, 2003; 94(6): 2249 - 2254.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
F. Yamazaki and R. Sone
Modulation of arterial baroreflex control of heart rate by skin cooling and heating in humans
J Appl Physiol, February 1, 2000; 88(2): 393 - 400.
[Abstract] [Full Text] [PDF]

Home page
 CirculationHome page
G. Ligtenberg, P. J. Blankestijn, P. L. Oey, G. H. Wieneke, A. C. van Huffelen, and H. A. Koomans
Cold Stress Provokes Sympathoinhibitory Presyncope in Healthy Subjects and Hemodialysis Patients With Low Cardiac Output
Circulation, May 6, 1997; 95(9): 2271 - 2276.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online