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


     

J Appl Physiol 56: 1602-1607, 1984;
8750-7587/84 $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 Baldwin, K. M.
Right arrow Articles by Edgerton, V. R.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Baldwin, K. M.
Right arrow Articles by Edgerton, V. R.

Journal of Applied Physiology, Vol 56, Issue 6 1602-1607, Copyright © 1984 by American Physiological Society

ARTICLES

Relative independence of metabolic enzymes and neuromuscular activity

K. M. Baldwin, R. R. Roy, R. D. Sacks, C. Blanco and V. R. Edgerton

Effects of spinal cord transection in 2-wk-old cats on the metabolic, histochemical, and fatigue properties of a fast- and a slow-twitch muscle were determined. Chronic (6-12 mo) spinalization (Sp) resulted in an increased ratio of fast-twitch, oxidative-glycolytic (FOG) to slow-twitch, oxidative (SO) fibers in soleus (SOL). In medial gastrocnemius (MG), Sp produced a histochemical profile suggesting that fast fibers were increased at the expense of slow fibers. Changes in biochemical markers for oxidative (citrate synthase) and glycolytic (GPD) potential were consistent with the histochemical findings. The fatigue index of Sp MG and SOL remained normal and was consistent with the type and degree of fiber type change. Daily treadmill exercise did not markedly alter any of the adaptations. The metabolic and fatigue properties of skeletal muscle of Sp cats are consistent with the view that as some fibers develop "faster-like" characteristics, the oxidative and the glycolytic potential is also enhanced. As was true of the contractile properties and related biochemical data, the changes observed suggest that significant changes occurred within as well as across fiber types. These data, in conjunction with that of chronic EMG recordings, provide evidence that there is a relative independence of both the oxidative potential and the fatigability of a muscle relative to its quantity of activation.


This article has been cited by other articles:


Home page
 J. Appl. Physiol.Home page
R. K. Shields, S. Dudley-Javoroski, and A. E. Littmann
Postfatigue potentiation of the paralyzed soleus muscle: evidence for adaptation with long-term electrical stimulation training
J Appl Physiol, August 1, 2006; 101(2): 556 - 565.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
J. S. Otis, R. R. Roy, V. R. Edgerton, and R. J. Talmadge
Adaptations in metabolic capacity of rat soleus after paralysis
J Appl Physiol, February 1, 2004; 96(2): 584 - 596.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
R. J. Talmadge, R. R. Roy, V. J. Caiozzo, and V. R. Edgerton
Mechanical properties of rat soleus after long-term spinal cord transection
J Appl Physiol, October 1, 2002; 93(4): 1487 - 1497.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
E. Smol, E. Zernicka, D. Czarnowski, and J. Langfort
Lipoprotein lipase activity in skeletal muscles of the rat: effects of denervation and tenotomy
J Appl Physiol, March 1, 2001; 90(3): 954 - 960.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
M. J. Castro, D. F. Apple Jr., R. S. Staron, G. E. R. Campos, and G. A. Dudley
Influence of complete spinal cord injury on skeletal muscle within 6 mo of injury
J Appl Physiol, January 1, 1999; 86(1): 350 - 358.
[Abstract] [Full Text] [PDF]


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