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


     

J Appl Physiol 63: 2325-2330, 1987;
8750-7587/87 $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 Eckberg, D. L.
Right arrow Articles by Wallin, B. G.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Eckberg, D. L.
Right arrow Articles by Wallin, B. G.

Journal of Applied Physiology, Vol 63, Issue 6 2325-2330, Copyright © 1987 by American Physiological Society

ARTICLES

Isometric exercise modifies autonomic baroreflex responses in humans

D. L. Eckberg and B. G. Wallin
Department of Medicine, Veterans Administration Medical Center, Richmond, Virginia.

The influence of brief, moderate isometric exercise on the earliest vagal and sympathetic responses to changes of afferent carotid baroreceptor activity was studied in 10 healthy young men and women. Vagal-cardiac nerve activity was estimated from changes of electrocardiographic R-R intervals, and postganglionic peroneal nerve muscle sympathetic activity was measured directly from microneurographic recordings. Carotid baroreceptor activity was altered with 5-s periods of 30 Torr pressure or suction applied to a neck chamber during held expiration. Brief handgrip (30% of maximum) significantly reduced base-line R-R intervals, did not modify reductions of R-R intervals during neck pressure, and significantly reduced increases of R-R intervals during neck suction. Handgrip did not significantly increase base-line sympathetic activity from resting levels, but it significantly diminished increases of sympathetic activity during neck pressure and augmented reductions of sympathetic activity during neck suction. Our results suggest that exercise modifies, in small but significant ways, early sympathetic and vagal responses to abrupt changes of arterial baroreceptor input in humans.


This article has been cited by other articles:


Home page
 J. Physiol.Home page
M. Ichinose, M. Saito, A. Kitano, K. Hayashi, N. Kondo, and T. Nishiyasu
Modulation of arterial baroreflex dynamic response during mild orthostatic stress in humans
J. Physiol., May 15, 2004; 557(1): 321 - 330.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
J. Cui, T. E. Wilson, M. Shibasaki, N. A. Hodges, and C. G. Crandall
Baroreflex modulation of muscle sympathetic nerve activity during posthandgrip muscle ischemia in humans
J Appl Physiol, October 1, 2001; 91(4): 1679 - 1686.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Heart Circ. Physiol.Home page
P. J. Fadel, S. Ogoh, D. E. Watenpaugh, W. Wasmund, A. Olivencia-Yurvati, M. L. Smith, and P. B. Raven
Carotid baroreflex regulation of sympathetic nerve activity during dynamic exercise in humans
Am J Physiol Heart Circ Physiol, March 1, 2001; 280(3): H1383 - H1390.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Heart Circ. Physiol.Home page
J. Spaak, P. Sundblad, and D. Linnarsson
Human carotid baroreflex during isometric lower arm contraction and ischemia
Am J Physiol Heart Circ Physiol, September 1, 1998; 275(3): H940 - H945.
[Abstract] [Full Text] [PDF]


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