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


     

J Appl Physiol 89: 1845-1851, 2000;
8750-7587/00 $5.00
This Article
Right arrow Full Text Free
Right arrow Full Text (PDF) Free
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 ISI Web of Science
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 ISI Web of Science (46)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Febbraio, M. A.
Right arrow Articles by Garnham, A. P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Febbraio, M. A.
Right arrow Articles by Garnham, A. P.
Vol. 89, Issue 5, 1845-1851, November 2000

Preexercise carbohydrate ingestion, glucose kinetics, and muscle glycogen use: effect of the glycemic index

Mark A. Febbraio1, Justin Keenan2, Damien J. Angus1, Shannon E. Campbell1, and Andrew P. Garnham3

1 Exercise Physiology and Metabolism Laboratory, Department of Physiology, The University of Melbourne, Parkville 3052; 2 Department of Human Biology and Movement Science, Royal Melbourne Institute of Technology, Bundoora 3083; and 3 School of Health Sciences, Deakin University, Burwood 3125, Australia

Eight trained men cycled at 70% peak oxygen uptake for 120 min followed by a 30-min performance cycle after ingesting either a high-glycemic index (HGI), low-glycemic index (LGI), or placebo (Con) meal 30 min before exercise. Ingestion of HGI resulted in an elevated (P < 0.01) blood glucose concentration compared with LGI and Con. At the onset of exercise, blood glucose fell (P < 0.05) such that it was lower (P < 0.05) in HGI compared with LGI and Con at 15 and 30 min during exercise. Plasma insulin concentration was higher (P < 0.01) throughout the rest period after ingestion of HGI compared with LGI and Con. Plasma free fatty acid concentrations were lower (P < 0.05) throughout exercise in HGI compared with LGI and Con. The rates of [6,6-2H]glucose appearance and disappearance were higher (P < 0.05) at rest after ingestion and throughout exercise in HGI compared with LGI and Con. Carbohydrate oxidation was higher (P < 0.05) throughout exercise, whereas glycogen use tended (P = 0.07) to be higher in HGI compared with LGI and Con. No differences were observed in work output during the performance cycle when comparing the three trials. These results demonstrate that preexercise carbohydrate feeding with a HGI, but not a LGI, meal augments carbohydrate utilization during exercise but does not effect exercise performance.

glucose uptake; glucose production; preexercise feeding; glycogenolysis


This article has been cited by other articles:


Home page
 AMERICAN JOURNAL OF LIFESTYLE MEDICINEHome page
K. Marsh and J. Brand-Miller
State of the Art Reviews: Glycemic Index, Obesity, and Chronic Disease
American Journal of Lifestyle Medicine, April 1, 2008; 2(2): 142 - 150.
[Abstract] [PDF]

Home page
 J. Appl. Physiol.Home page
C. R. Harvey, R. Frew, D. Massicotte, F. Peronnet, and N. J. Rehrer
Muscle glycogen oxidation during prolonged exercise measured with oral [13C]glucose: comparison with changes in muscle glycogen content
J Appl Physiol, May 1, 2007; 102(5): 1773 - 1779.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Clin. Nutr.Home page
E. J Stevenson, C. Williams, L. E Mash, B. Phillips, and M. L Nute
Influence of high-carbohydrate mixed meals with different glycemic indexes on substrate utilization during subsequent exercise in women.
Am. J. Clinical Nutrition, August 1, 2006; 84(2): 354 - 360.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Endocrinol. Metab.Home page
G. A. Wallis, R. Dawson, J. Achten, J. Webber, and A. E. Jeukendrup
Metabolic response to carbohydrate ingestion during exercise in males and females
Am J Physiol Endocrinol Metab, April 1, 2006; 290(4): E708 - E715.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Endocrinol. Metab.Home page
A. E. Civitarese, M. K. C. Hesselink, A. P. Russell, E. Ravussin, and P. Schrauwen
Glucose ingestion during exercise blunts exercise-induced gene expression of skeletal muscle fat oxidative genes
Am J Physiol Endocrinol Metab, December 1, 2005; 289(6): E1023 - E1029.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
S.-L. Wee, C. Williams, K. Tsintzas, and L. Boobis
Ingestion of a high-glycemic index meal increases muscle glycogen storage at rest but augments its utilization during subsequent exercise
J Appl Physiol, August 1, 2005; 99(2): 707 - 714.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Clin. Nutr.Home page
J. C Brand-Miller, S. H. Holt, D. B Pawlak, and J. McMillan
Glycemic index and obesity
Am. J. Clinical Nutrition, July 1, 2002; 76(1): 281S - 285.
[Abstract] [Full Text] [PDF]

Home page
 JAMAHome page
D. S. Ludwig
The Glycemic Index: Physiological Mechanisms Relating to Obesity, Diabetes, and Cardiovascular Disease
JAMA, May 8, 2002; 287(18): 2414 - 2423.
[Abstract] [Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
E. Jose-Cunilleras, K. W. Hinchcliff, R. A. Sams, S. T. Devor, and J. K. Linderman
Glycemic index of a meal fed before exercise alters substrate use and glucose flux in exercising horses
J Appl Physiol, January 1, 2002; 92(1): 117 - 128.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Endocrinol. Metab.Home page
S. E. Campbell, D. J. Angus, and M. A. Febbraio
Glucose kinetics and exercise performance during phases of the menstrual cycle: effect of glucose ingestion
Am J Physiol Endocrinol Metab, October 1, 2001; 281(4): E817 - E825.
[Abstract] [Full Text] [PDF]


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