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


     

J Appl Physiol 72: 423-427, 1992;
8750-7587/92 $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 Decombaz, J.
Right arrow Articles by Cerretelli, P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Decombaz, J.
Right arrow Articles by Cerretelli, P.

Journal of Applied Physiology, Vol 72, Issue 2 423-427, Copyright © 1992 by American Physiological Society

ARTICLES

Muscle carnitine after strenuous endurance exercise

J. Decombaz, B. Gmuender, G. Sierro and P. Cerretelli
Nestec Limited, Research Centre, Vers-chez-les-Blanc, Lausanne, Switzerland.

The effect of very long endurance exercise on muscle carnitine was studied. Eighteen cross-country skiers took part in a race in the Alps (average inspired partial pressure of O2 100-110 Torr) that lasted on average 13 h 26 min. Carnitine intake, evaluated for 2 wk before the event, was 50 +/- 4 (SE) mg/day. Muscle (vastus lateralis) total carnitine concentration, measured twice with a 2-yr interval on eight rested subjects, did not change with time (17 vs. 16 mumol/g dry wt, NS) but showed consistent interindividual differences (range 12-22, P = 0.001) with no correlation with intake. After exercise, total muscle carnitine was unaltered (from 17.9 +/- 1.0 at rest to 18.3 +/- 0.8 mumol/g dry wt postexercise in the 15 subjects who completed the race, NS), but muscle free carnitine decreased 20% (from 14.9 +/- 0.8 mumol/g, P = 0.01) and short-chain acylcarnitine increased 108% (from 3.5 +/- 0.4 mumol/g, P = 0.01). These results suggest that carnitine deficiency will probably not result from strenuous aerobic exercise in trained subjects who consume a moderate amount of carnitine in their food.


This article has been cited by other articles:


Home page
 J. Nutr.Home page
N. Hongu and D. S. Sachan
Carnitine and Choline Supplementation with Exercise Alter Carnitine Profiles, Biochemical Markers of Fat Metabolism and Serum Leptin Concentration in Healthy Women
J. Nutr., January 1, 2003; 133(1): 84 - 89.
[Abstract] [Full Text] [PDF]

Home page
 J. Nutr.Home page
N. Hongu and D. S. Sachan
Caffeine, Carnitine and Choline Supplementation of Rats Decreases Body Fat and Serum Leptin Concentration as Does Exercise
J. Nutr., January 1, 2000; 130(2): 152 - 157.
[Abstract] [Full Text]


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