Journal of Applied Physiology Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 68: 147-153, 1990;
8750-7587/90 $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
Right arrow Citation Map
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 Ten Harkel, A. D.
Right arrow Articles by Wieling, W.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ten Harkel, A. D.
Right arrow Articles by Wieling, W.

Journal of Applied Physiology, Vol 68, Issue 1 147-153, Copyright © 1990 by American Physiological Society

ARTICLES

Assessment of cardiovascular reflexes: influence of posture and period of preceding rest

A. D. Ten Harkel, J. J. Van Lieshout, E. J. Van Lieshout and W. Wieling
Department of Medicine, Academic Medical Centre, Amsterdam, The Netherlands.

The aim of the present study was to investigate the effects of a pretest redistribution of blood volume and of a change in the neurohumoral condition on the blood pressure (BP) and heart rate (HR) responses to three commonly used cardiovascular reflex tests: standing up, forced breathing, and the Valsalva maneuver in 10 healthy male subjects. Base-line conditions were altered by changing posture and the duration of rest preceding the test stimulus. A continuous recording of finger BP was obtained noninvasively by a Finapres. The main observations from this study are with respect to standing up: lengthening the period of preceding rest from 1 to 20 min enlarges the initial BP (systolic/diastolic) decrease (from 8 +/- 10/9 +/- 4 to 27 +/- 8/19 +/- 4 mmHg, P less than 0.01) and the subsequent BP overshoot (from 17 +/- 10/12 +/- 7 to 31 +/- 10/18 +/- 7 mmHg, P less than 0.05); to forced breathing: inspiratory-expiratory changes in BP but not in HR are larger in the upright posture (P less than 0.05); and to the Valsalva maneuver: change in posture from supine to standing increases the phase II BP decrease (from 18 +/- 12/8 +/- 6 to 45 +/- 16/21 +/- 9 mmHg), phase IV systolic BP overshoot (from 26 +/- 16 to 71 +/- 17 mmHg), delta HRmax (from 30 +/- 10 to 47 +/- 12 beats/min), and the Valsalva ratio (HRmax/HRmin), from 2.0 +/- 0.3 to 2.6 +/- 0.7, all significant at P less than 0.01.(ABSTRACT TRUNCATED AT 250 WORDS)


This article has been cited by other articles:


Home page
 HypertensionHome page
R. Winker, A. Barth, D. Bidmon, I. Ponocny, M. Weber, O. Mayr, D. Robertson, A. Diedrich, R. Maier, A. Pilger, et al.
Endurance Exercise Training in Orthostatic Intolerance: A Randomized, Controlled Trial
Hypertension, March 1, 2005; 45(3): 391 - 398.
[Abstract] [Full Text] [PDF]

Home page
 CMAJHome page
M. Lamarre-Cliche and J. Cusson
The fainting patient: value of the head-upright tilt-table test in adult patients with orthostatic intolerance
Can. Med. Assoc. J., February 1, 2001; 164(3): 372 - 376.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
F. Pott, J. J. van Lieshout, K. Ide, P. Madsen, and N. H. Secher
Middle cerebral artery blood velocity during a Valsalva maneuver in the standing position
J Appl Physiol, May 1, 2000; 88(5): 1545 - 1550.
[Abstract] [Full Text] [PDF]

Home page
 JAMAHome page
S. McGee, W. B. Abernethy III, and D. L. Simel
Is This Patient Hypovolemic?
JAMA, March 17, 1999; 281(11): 1022 - 1029.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
T. T. Schlegel, E. W. Benavides, D. C. Barker, T. E. Brown, D. L. Harm, S. J. DeSilva, and P. A. Low
Cardiovascular and Valsalva responses during parabolic flight
J Appl Physiol, November 1, 1998; 85(5): 1957 - 1965.
[Abstract] [Full Text] [PDF]


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