Document Detail


Acute creatine supplementation and performance during a field test simulating match play in elite female soccer players.
MedLine Citation:
PMID:  11993621     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study investigated the effects of acute creatine (Cr) supplementation on the performance of elite female soccer players undertaking an exercise protocol simulating match play. On two occasions, 7 days apart, 12 players performed 5 x 11-min exercise testing blocks interspersed with 1 min of rest. Each block consisted of 11 all-out 20-m running sprints, 2 agility runs, and 1 precision ball-kicking drill, separated by recovery 20-m walks,jogs, and runs. After the initial testing session, subjects were assigned to either a CREATINE (5 g of Cr, 4 times per day for 6 days) or a PLACEBO group (same dosage of a glucose polymer) using a double-blind research design. Body mass (BM) increased (61.7 +/- 8.9 to 62.5 < or = 8.9 kg, p < .01) in the CREATINE group; however, no change was observed in the PLACEBO group (63.4 < or = 2.9 kg to 63.7 +/- 2.5 kg). No overall change in 20-m sprint times and agility run times were observed, although the CREATINE group achieved faster post-supplementation times in sprints 11, 13, 14, 16, 21, 23, 25, 32, and 39 (p <.05), and agility runs 3, 5, and 8 (p < .05). The accuracy of shooting was unaffected in both groups. In conclusion, acute Cr supplementation improved performance of some repeated sprint and agility tasks simulating soccer match play, despite an increase in BM.
Authors:
Greg Cox; Iñigo Mujika; Douglas Tumilty; Louise Burke
Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of sport nutrition and exercise metabolism     Volume:  12     ISSN:  1526-484X     ISO Abbreviation:  Int J Sport Nutr Exerc Metab     Publication Date:  2002 Mar 
Date Detail:
Created Date:  2002-05-07     Completed Date:  2002-10-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100939812     Medline TA:  Int J Sport Nutr Exerc Metab     Country:  United States    
Other Details:
Languages:  eng     Pagination:  33-46     Citation Subset:  IM    
Affiliation:
Australian Institute of Sport, Department of Sports Nutrition, Australian Capital Territory, Belconnen.
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MeSH Terms
Descriptor/Qualifier:
Adult
Body Weight / drug effects*
Creatine / administration & dosage*,  adverse effects
Dietary Supplements
Double-Blind Method
Exercise Test
Female
Heart Rate / drug effects
Humans
Hydrogen-Ion Concentration / drug effects
Lactic Acid / blood
Muscle, Skeletal / drug effects,  metabolism*
Phosphocreatine / biosynthesis*
Soccer / physiology*
Chemical
Reg. No./Substance:
50-21-5/Lactic Acid; 57-00-1/Creatine; 67-07-2/Phosphocreatine

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


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