Document Detail


Effect of creatine supplementation on aerobic performance and anaerobic capacity in elite rowers in the course of endurance training.
MedLine Citation:
PMID:  12945828     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of oral creatine supplementation on aerobic and anaerobic performance was investigated in 16 elite male rowers during 7-day endurance training. Before and after the daily ingestion of 20 g creatine monohydrate for 5 days (Cr-Group, n=8) or placebo (Pl-Group, n=8), subjects performed two exercise tests on a rowing ergometer: (a) incremental exercise consisting of 3-min stage durations and increased by 50 W until volitional exhaustion; (b) an all-out anaerobic exercise performed against a constant load of 7 W/kg. Heart rate and blood lactate concentrations were determined during exercise and recovery. Maximal power output did not significantly differ after the treatment in either group. The mean individual lactate threshold rose significantly after Cr treatment from 314.3 +/- 5.0 W to 335.6 +/- 7.1 W (p<.01), as compared with 305.0 +/- 6.9 W and 308.9 +/- 5.9 W (ns), before and after placebo ingestion, respectively. During the anaerobic test, the athletes supplemented with creatine were able to continue rowing longer (mean increase, 12.1 +/- 4.5 s; p<.01) than Pl-Group (2.4 +/- 8.2 s; ns). No significant differences were found between groups in blood LA after the all-out exercise. The results indicate that in elite rowers, creatine supplementation improves endurance (expressed by the individual lactate threshold) and anaerobic performance, independent of the effect of intensive endurance training.
Authors:
Jolanta Chwalbiñska-Moneta
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  International journal of sport nutrition and exercise metabolism     Volume:  13     ISSN:  1526-484X     ISO Abbreviation:  Int J Sport Nutr Exerc Metab     Publication Date:  2003 Jun 
Date Detail:
Created Date:  2003-08-29     Completed Date:  2003-10-14     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100939812     Medline TA:  Int J Sport Nutr Exerc Metab     Country:  United States    
Other Details:
Languages:  eng     Pagination:  173-83     Citation Subset:  IM    
Affiliation:
Department of Applied Physiology in the Medical Research Centre of Polish Academy of Sciences, 02-106 Warsaw, Poland.
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological / drug effects,  physiology
Administration, Oral
Adult
Anaerobic Threshold / drug effects,  physiology
Creatine / administration & dosage*
Dietary Supplements*
Double-Blind Method
Heart Rate / drug effects,  physiology
Humans
Lactic Acid / blood
Male
Muscle, Skeletal / drug effects,  physiology
Oxygen Consumption / drug effects*,  physiology
Physical Education and Training / methods
Physical Endurance / drug effects*,  physiology
Reference Values
Sports / physiology*
Task Performance and Analysis*
Chemical
Reg. No./Substance:
50-21-5/Lactic Acid; 57-00-1/Creatine

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


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