Document Detail


Ingesting a 6% carbohydrate-electrolyte solution improves endurance capacity, but not sprint performance, during intermittent, high-intensity shuttle running in adolescent team games players aged 12-14 years.
MedLine Citation:
PMID:  20229023     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The main aim of this study was to investigate the influence of consuming a 6% carbohydrate-electrolyte (CHO-E) solution on the intermittent, high-intensity endurance performance and capacity of adolescent team games players. Fifteen participants (mean age 12.7 +/- 0.8 years) performed two trials separated by 3-7 days. In each trial, they completed 60 min of exercise composed of four 15-min periods of part A of the Loughborough Intermittent Shuttle Test, followed by an intermittent run to exhaustion (part B). In a double-blind, randomised, counterbalanced fashion participants consumed either the 6% CHO-E solution or a non-carbohydrate (CHO) placebo (5 ml kg(-1) BM) during the 5 min pre-trial and after each 15-min period of part A (2 ml kg(-1) BM). Time to fatigue was increased by 24.4% during part B when CHO was ingested (5.1 +/- 1.8 vs. 4.1 +/- 1.6 min, P < 0.05), with distance covered in part B also significantly greater in the CHO trial (851 +/- 365 vs. 694 +/- 278 m, P < 0.05). No significant between-trials differences were observed for mean 15-m sprint time (P = 0.35), peak sprint time (P = 0.77), or heart rate (P = 0.08) during part A. These results demonstrate, for the first time, that ingestion of a CHO-E solution significantly improves the intermittent, high-intensity endurance running capacity of adolescent team games players during an exercise protocol designed to simulate the physiological demands of team games.
Authors:
Shaun M Phillips; Anthony P Turner; Shirley Gray; Mark F Sanderson; John Sproule
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial     Date:  2010-03-13
Journal Detail:
Title:  European journal of applied physiology     Volume:  109     ISSN:  1439-6327     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-06-25     Completed Date:  2010-10-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  811-21     Citation Subset:  IM    
Affiliation:
Department of Physical Education, Sport and Leisure Studies, University of Edinburgh, St Leonards Land, Holyrood Road, Edinburgh, EH8 8AQ, UK. S.M.Phillips@sms.ed.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Administration, Oral
Adolescent
Athletic Performance / physiology*
Body Mass Index
Child
Data Interpretation, Statistical
Dietary Carbohydrates / pharmacology*
Double-Blind Method
Electrolytes / pharmacology*
Exercise Tolerance / drug effects,  physiology
Female
Heart Rate / drug effects
Humans
Male
Physical Endurance / drug effects*,  physiology
Running / physiology*
Sex Characteristics
Time Factors
Chemical
Reg. No./Substance:
0/Dietary Carbohydrates; 0/Electrolytes

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


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