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


     

J Appl Physiol 71: 1454-1459, 1991;
8750-7587/91 $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 McMurray, R. G.
Right arrow Articles by Watson, W. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by McMurray, R. G.
Right arrow Articles by Watson, W. J.

Journal of Applied Physiology, Vol 71, Issue 4 1454-1459, Copyright © 1991 by American Physiological Society

ARTICLES

Pregnancy-induced changes in the maximal physiological responses during swimming

R. G. McMurray, A. C. Hackney, V. L. Katz, M. Gall and W. J. Watson
Department of Physical Education, Exercise and Sports Science, University of North Carolina, Chapel Hill 27599.

The effect of pregnancy on peak O2 uptake (VO2 peak) during tethered swimming was evaluated in 10 women during their 25th and 35th wk of pregnancy, as well as 9-11 wk postpartum. The swim results were compared with cycle ergometry results obtained at similar times. The results indicated that exercise-induced maximal heart rates remained the same and were similar for the swim and cycle trials, approximately 184 +/- 4 beats/min. Cycling VO2 peak was not affected by pregnancy, averaging 1.94 +/- 0.11 l/min. Postpartum swim VO2 peak was similar to the cycle results; however, during pregnancy it was significantly lower than cycling VO2 peak (P less than 0.05; postpartum, 1.78 +/- 0.14 l/min; 25th wk, 1.64 +/- 0.12; 35th wk, 1.48 +/- 0.11). Hemoglobin concentrations and hematocrits were lower during pregnancy; however, changes in plasma volume (based on hematocrit and hemoglobin) were found to be significantly greater during cycling than during swimming and also greater during pregnancy for both modes of exercise. It was concluded that, unlike cycling, the VO2 peak of pregnant women during swimming is reduced. This reduction in VO2 peak was associated with a decreased peak ventilation (r = 0.864) but was not correlated to exercise-induced hemoconcentration (r = -0.29). Furthermore, pregnancy results in a greater-than-normal exercise-induced hemoconcentration, which may be related to pregnancy-induced changes in capillary dynamics.


This article has been cited by other articles:


Home page
 Journal of Intelligent Material Systems and StructuresHome page
T. Ikeda
Constitutive Model of Shape Memory Alloys for Asymmetric Quasiplastic Behavior
Journal of Intelligent Material Systems and Structures, May 1, 2008; 19(5): 533 - 540.
[Abstract] [PDF]

Home page
 Br. J. Sports. Med.Home page
R Artal, M O'Toole, and S White
Guidelines of the American College of Obstetricians and Gynecologists for exercise during pregnancy and the postpartum period
Br. J. Sports Med., February 1, 2003; 37(1): 6 - 12.
[Full Text] [PDF]

Home page
 Obstet GynecolHome page
A. P. HEENAN, L. A. WOLFE, and G. A. L. DAVIES
Maximal Exercise Testing in Late Gestation: Maternal Responses
Obstet. Gynecol., January 1, 2001; 97(1): 127 - 134.
[Abstract] [Full Text] [PDF]


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