| Effect of creatine supplementation on aerobic performance and anaerobic capacity in elite rowers in the course of endurance training. | |
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MedLine Citation:
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PMID: 12945828 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Jolanta Chwalbiñska-Moneta |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Randomized Controlled Trial |
Journal Detail:
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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:
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Created Date: 2003-08-29 Completed Date: 2003-10-14 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 100939812 Medline TA: Int J Sport Nutr Exerc Metab Country: United States |
Other Details:
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Languages: eng Pagination: 173-83 Citation Subset: IM |
Affiliation:
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Department of Applied Physiology in the Medical Research Centre of Polish Academy of Sciences, 02-106 Warsaw, Poland. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological
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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:
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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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