Journal of Applied Physiology AJP citation statistics
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
 QUICK SEARCH:   [advanced]


     


J Appl Physiol (June 1, 2006). doi:10.1152/japplphysiol.00382.2006
This Article
Right arrow Full Text (PDF) Free
Right arrow All Versions of this Article:
101/3/840    most recent
00382.2006v1
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 McInnis, N. H
Right arrow Articles by Kenny, G. P
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by McInnis, N. H
Right arrow Articles by Kenny, G. P
Submitted on March 30, 2006
Accepted on May 23, 2006

15°Head-down tilt attenuates the postexercise reduction in cutaneous vascular conductance and sweating and decreases esophageal temperature recovery time

Natalie H McInnis1, W Shane Journeay2, Ollie Jay1, Emily E Leclair1, and Glen P Kenny1*

1 School of Human Kinetics, University of Ottawa, Ottawa, Canada
2 Toxicology Graduate Program and Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada

* To whom correspondence should be addressed. E-mail: gkenny{at}uottawa.ca.

Seven male subjects performed the following 3 experimental protocols: 1) 60 min in the upright seated (URS) posture followed by 60 min in the 15° head-down tilt position (HDT); 2) 15 min of cycle ergometry at 75% of their pre-determined VO2peak followed by 60 min recovery in the URS posture; or 3) 15 min of cycle ergometry at 75% of their pre-determined VO2peak followed by 60 min recovery in the 15° HDT position. Mean skin temperature (Tsk), esophageal temperature (Tes), skin blood flow (SkBF), sweat rate, cardiac output (CO), stroke volume (SV), heart rate (HR), total peripheral resistance (TPR), and mean arterial pressure (MAP) were recorded at baseline, end exercise, 2, 5, 8, 12, 15, 20 and every 5-min until end of recovery (60-min). Without preceding exercise, HDT decreased HR and increased SV (p≤0.05). During recovery after exercise, a significantly greater MAP, SV, CVC and sweat rate and a significantly lower HR were found with HDT in comparison to URS posture (p≤0.05). Subsequently a significantly lower Tes was observed with HDT after 15-min of recovery onwards (p≤0.05). At the end of 60-min recovery, Tes remained significantly elevated above baseline with URS (p≤0.05), however Tes returned to baseline with HDT. In conclusion, extended recovery from dynamic exercise in the 15° HDT position attenuates the reduction in CVC and sweating thereby significantly increasing the rate of esophageal temperature decay compared to recovery in the URS posture.




This article has been cited by other articles:


Home page
Am. J. Physiol. Regul. Integr. Comp. Physiol.Home page
O. Jay, D. Gagnon, M. B. DuCharme, P. Webb, F. D. Reardon, and G. P. Kenny
Human heat balance during postexercise recovery: separating metabolic and nonthermal effects
Am J Physiol Regulatory Integrative Comp Physiol, May 1, 2008; 294(5): R1586 - R1592.
[Abstract] [Full Text] [PDF]


Home page
Am. J. Physiol. Regul. Integr. Comp. Physiol.Home page
G. P. Kenny and O. Jay
Sex differences in postexercise esophageal and muscle tissue temperature response
Am J Physiol Regulatory Integrative Comp Physiol, April 1, 2007; 292(4): R1632 - R1640.
[Abstract] [Full Text] [PDF]




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
Visit Other APS Journals Online
Copyright © 1948 by the American Physiological Society.