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


     

J Appl Physiol 44: 166-170, 1978;
8750-7587/78 $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 Senay, L. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Senay, L. C., Jr

Journal of Applied Physiology, Vol 44, Issue 2 166-170, Copyright © 1978 by American Physiological Society

ARTICLES

Early response of plasma contents on exposure of working men to heat

L. C. Senay Jr

Twelve men block-stepped (35 W) 4 h/day for 12 days and were divided into two similar groups on the basis of Vo2max. All were exposed to 33.8 degrees C dry bulb, 32.7 degrees C wet bulb for 2 h (E1) while working (30% Vo2max). Venous blood was obtained at 10-min intervals during hour 1 and at 20-min intervals during hour 2. Group 1 was acclimatized to heat. Group II continued to train. The test exposure was repeated (E2). During E1 a trend toward hemodilution was evident but not significant for either group. Protein moved into the vascular volume and a decrease in plasma osmolarity was significant only after 30 min. For both groups during E2 significant hemodilution occurred during the first 10 min. Only group I remained significantly hemodiluted for 2 h. Protein movement and osmodilution again occurred in both groups. These results support earlier suggestions as to the mechanisms of hemodilution based on 1-h blood samples. Conflicting evidence as to the pressure or absence of hemodilution upon heat exposure is noted, and a hypothesis is proposed which appears to reconcile divergent results.


This article has been cited by other articles:


Home page
 Am J Sports MedHome page
S. F. Godek, J. J. Godek, and A. R. Bartolozzi
Hydration Status in College Football Players During Consecutive Days of Twice-a-Day Preseason Practices
Am. J. Sports Med., June 1, 2005; 33(6): 843 - 851.
[Abstract] [Full Text] [PDF]

Home page
 Br. J. Sports. Med.Home page
S F. Godek, A R Bartolozzi, J J Godek, and W O Roberts
Sweat rate and fluid turnover in American football players compared with runners in a hot and humid environment * Commentary
Br. J. Sports Med., April 1, 2005; 39(4): 205 - 211.
[Abstract] [Full Text] [PDF]


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