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


     

J Appl Physiol 48: 518-522, 1980;
8750-7587/80 $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 Stainbsy, W. N.
Right arrow Articles by Wilson, B. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Stainbsy, W. N.
Right arrow Articles by Wilson, B. A.

Journal of Applied Physiology, Vol 48, Issue 3 518-522, Copyright © 1980 by American Physiological Society

ARTICLES

Exercise efficiency: validity of base-line subtractions

W. N. Stainbsy, L. B. Gladden, J. K. Barclay and B. A. Wilson

In evaluating the efficiency of humans performing exercise, base-line subtractions have been used in an attempt to determine the efficiency of the muscles in performing the external work. Despite the fact that base lines have been criticized previously, they have been widely used without adequate analysis of the implications involved. Calculations of efficiencies using data available in the literature for isolated muscle preparations revealed that base-line subtractions result in unreasonably high efficiencies. This suggests strongly that the base lines are invalid. To be valid, a base line must continue unchanged under all the conditions in which it is applied. Previously published data indicate clearly that exercise base lines change with increasing work rate and are therefore invalid. The use of base lines is further complicated by elastic energy storage in some types of exercise. Although exercise efficiencies using base line subtractions may be useful, they do not indicate muscle efficiency. Perhaps future studies of exercise metabolism should be directed less at refining base lines and more toward describing and quantifying the determinants of energy expenditure.


This article has been cited by other articles:


Home page
 J. Exp. Biol.Home page
J. Rubenson, H. T. Henry, P. M. Dimoulas, and R. L. Marsh
The cost of running uphill: linking organismal and muscle energy use in guinea fowl (Numida meleagris)
J. Exp. Biol., July 1, 2006; 209(13): 2395 - 2408.
[Abstract] [Full Text] [PDF]

Home page
 J. Exp. Biol.Home page
R. K. Josephson, J. G. Malamud, and D. R. Stokes
The efficiency of an asynchronous flight muscle from a beetle
J. Exp. Biol., January 12, 2001; 204(23): 4125 - 4139.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
T. W. Ryschon, M. D. Fowler, R. E. Wysong, A.-R. Anthony, and R. S. Balaban
Efficiency of human skeletal muscle in vivo: comparison of isometric, concentric, and eccentric muscle action
J Appl Physiol, September 1, 1997; 83(3): 867 - 874.
[Abstract] [Full Text] [PDF]


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