QUICK SEARCH:   [advanced] Author: Keyword(s):
Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents

This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Holk, K. Articles by Lykkeboe, G. Search for Related Content PubMed PubMed Citation Articles by Holk, K. Articles by Lykkeboe, G. Social Bookmarking                         What's this?

Journal of Experimental Biology, Vol 201, Issue 9 1373-1380, Copyright © 1998 by Company of Biologists

JOURNAL ARTICLES

The impact of endurance training on arterial plasma K+ levels and swimming performance of rainbow trout

K Holk and G Lykkeboe

Arterial plasma K+ and lactate concentrations ([K+]a and [lactate]a), as well as blood oxygenation status, were measured in relation to increasing swimming speeds in rainbow trout Oncorhynchus mykiss. Neither [K+]a nor [lactate]a changed at swimming speeds below 1.5 BL s-1, where BL is total body length. Between 1.5 and 2.0 BL s-1, [K+]a started to increase, and above 2.0 BL s-1 both [K+]a and [lactate]a increased with swimming speed. Training shifted the onset of these increases to higher swimming speeds and increased the critical swimming speed (Ucrit) from 2.4 to 3.0 BL s-1. Blood oxygen content showed no changes in control fish, whereas in trained fish it increased by 22 % at the final swimming speed. From the [K+]a data, we suggest that no loss of K+ occurred from the working muscle at low swimming speeds, allowing an unlimited endurance, whereas moderate and higher speeds were probably associated with a loss of K+ from the working muscles, indicating a limited endurance. <P>
CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

This article has been cited by other articles:

				M. F. Steinhausen, E. Sandblom, E. J. Eliason, C. Verhille, and A. P. Farrell The effect of acute temperature increases on the cardiorespiratory performance of resting and swimming sockeye salmon (Oncorhynchus nerka) J. Exp. Biol., December 15, 2008; 211(24): 3915 - 3926. [Abstract] [Full Text] [PDF]

				A.P Farrell Cardiorespiratory performance during prolonged swimming tests with salmonids: a perspective on temperature effects and potential analytical pitfalls Phil Trans R Soc B, November 29, 2007; 362(1487): 2017 - 2030. [Abstract] [Full Text] [PDF]

				K. Anttila, S. Manttari, and M. Jarvilehto Effects of different training protocols on Ca2+ handling and oxidative capacity in skeletal muscle of Atlantic salmon (Salmo salar L.) J. Exp. Biol., August 1, 2006; 209(15): 2971 - 2978. [Abstract] [Full Text] [PDF]

				L. M. Hanson, S. Obradovich, J. Mouniargi, and A. P. Farrell The role of adrenergic stimulation in maintaining maximum cardiac performance in rainbow trout (Oncorhynchus mykiss) during hypoxia, hyperkalemia and acidosis at 10{degrees}C J. Exp. Biol., July 1, 2006; 209(13): 2442 - 2451. [Abstract] [Full Text] [PDF]

				K. E. Jain and A. P. Farrell Influence of seasonal temperature on the repeat swimming performance of rainbow trout Oncorhynchus mykiss J. Exp. Biol., October 15, 2003; 206(20): 3569 - 3579. [Abstract] [Full Text] [PDF]