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


     

J Appl Physiol 55: 218-224, 1983;
8750-7587/83 $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
Right arrow Citation Map
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 McCartney, N.
Right arrow Articles by Jones, N. L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by McCartney, N.
Right arrow Articles by Jones, N. L.

Journal of Applied Physiology, Vol 55, Issue 1 218-224, Copyright © 1983 by American Physiological Society

ARTICLES

Power output and fatigue of human muscle in maximal cycling exercise

N. McCartney, G. J. Heigenhauser and N. L. Jones

We studied maximal torque-velocity relationships and fatigue during short-term maximal exercise on a constant velocity cycle ergometer in 13 healthy male subjects. Maximum torque showed an inverse linear relationship to crank velocity between 60 and 160 rpm, and a direct relationship to thigh muscle volume measured by computerized tomography. Peak torque per liter thigh muscle volume (PT, N X ml-1) was related to crank velocity (CV, rpm) in the following equation: PT = 61.7 - 0.234 CV (r = 0.99). Peak power output was a parabolic function of crank velocity in individual subjects, but maximal power output was achieved at varying crank velocities in different subjects. Fiber type distribution was measured in the two subjects showing the greatest differences and demonstrated that a high proportion of type II fibers may be one factor associated with a high crank velocity for maximal power output. The decline in average power during 30 s of maximal effort was least at 60 rpm (23.7 +/- 4.6% of initial maximal power) and greatest at 140 rpm (58.7 +/- 6.5%). At 60 rpm the decline in power over 30 s was inversely related to maximal oxygen uptake (ml X min-1 X kg-1) (r = 0.69). Total work performed and plasma lactate concentration 3 min after completion of 30-s maximum effort were similar for each crank velocity.


This article has been cited by other articles:


Home page
 Exp PhysiolHome page
A. Vanhatalo, J. H. Doust, and M. Burnley
Robustness of a 3 min all-out cycling test to manipulations of power profile and cadence in humans
Exp Physiol, March 1, 2008; 93(3): 383 - 390.
[Abstract] [Full Text] [PDF]

Home page
 Br. J. Sports. Med.Home page
A M Hunter, A St Clair Gibson, M I Lambert, L Nobbs, and T D Noakes
Effects of supramaximal exercise on the electromyographic signal
Br. J. Sports Med., August 1, 2003; 37(4): 296 - 299.
[Abstract] [Full Text] [PDF]

Home page
 NEJMHome page
N. L. Jones and K. J. Killian
Exercise Limitation in Health and Disease
N. Engl. J. Med., August 31, 2000; 343(9): 632 - 641.
[Full Text] [PDF]

Home page
 J. Gerontol. A Biol. Sci. Med. Sci.Home page
J. C. Martin, R. P. Farrar, B. M. Wagner, and W. W. Spirduso
Maximal Power Across the Lifespan
J. Gerontol. A Biol. Sci. Med. Sci., June 1, 2000; 55(6): 311M - 316.
[Abstract] [Full Text]

Home page
 Am. J. Physiol. Endocrinol. Metab.Home page
M. L. Parolin, A. Chesley, M. P. Matsos, L. L. Spriet, N. L. Jones, and G. J. F. Heigenhauser
Regulation of skeletal muscle glycogen phosphorylase and PDH during maximal intermittent exercise
Am J Physiol Endocrinol Metab, November 1, 1999; 277(5): E890 - E900.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
L. M. Arsac and E. Locatelli
Modeling the energetics of 100-m running by using speed curves of world champions
J Appl Physiol, May 1, 2002; 92(5): 1781 - 1788.
[Abstract] [Full Text] [PDF]


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