Document Detail


Effect of carbohydrate feeding during recovery from prolonged running on muscle glycogen metabolism during subsequent exercise.
MedLine Citation:
PMID:  12905095     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study examined the effect of carbohydrate (CHO) intake during a 4 h recovery from prolonged running on muscle glycogen metabolism during subsequent exercise. On 2 occasions, 7 male subjects ran for 90 min at 70 % maximum oxygen uptake VO(2 max) on a motorized treadmill (R1) followed by a 4 h rest period (REC) and a 15 min run (R2) consisting of 5 min at 60 % and 10 min at 70 % VO(2 max) During REC, each subject ingested a total of 2.7 l of an isotonic solution containing either 50 g of CHO (LOW) or 175 g of CHO (HIGH). Biopsy samples were obtained from the vastus lateralis immediately after R1, REC and R2. During REC, a higher muscle glycogen resynthesis was observed in HIGH when compared with LOW trial (75 +/- 20 vs. 31 +/- 11 mmol x kg dry matter (dm) -1, respectively; p < 0.01). Muscle glycogen utilization during R2 was similar between the HIGH and LOW trials (39 +/- 10 vs. 46 +/- 11 mmol x kg dm -1, respectively). These results suggest that ingestion of a large amount of CHO at frequent intervals during recovery from exercise does not affect the rate of muscle glycogen utilization during subsequent exercise.
Authors:
K Tsintzas; C Williams; L Boobis; S Symington; J Moorehouse; P Garcia-Roves; C Nicholas
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  International journal of sports medicine     Volume:  24     ISSN:  0172-4622     ISO Abbreviation:  Int J Sports Med     Publication Date:  2003 Aug 
Date Detail:
Created Date:  2003-08-07     Completed Date:  2005-04-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8008349     Medline TA:  Int J Sports Med     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  452-8     Citation Subset:  IM    
Affiliation:
Human Muscle Metabolism Research Group, Loughborough University, Loughborough, UK.
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MeSH Terms
Descriptor/Qualifier:
Adult
Blood Glucose / metabolism
Cross-Over Studies
Dietary Carbohydrates / pharmacology*
Double-Blind Method
Fatty Acids, Nonesterified / blood
Glycogen / metabolism*
Heart Rate
Humans
Insulin / blood
Lactic Acid / metabolism
Male
Muscle, Skeletal / blood supply,  metabolism*
Oxygen / metabolism
Plasma Volume
Running*
Chemical
Reg. No./Substance:
0/Blood Glucose; 0/Dietary Carbohydrates; 0/Fatty Acids, Nonesterified; 11061-68-0/Insulin; 50-21-5/Lactic Acid; 7782-44-7/Oxygen; 9005-79-2/Glycogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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