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The Effect of Carbohydrate-electrolyte Beverage Drinking Strategy on 10 mile Running Performance.
MedLine Citation:
PMID:  22805586     Owner:  NLM     Status:  Publisher    
The purpose of the present investigation was to investigate the influence of ingesting a carbohydrate-electrolyte beverage ad-libitum or as a prescribed volume on 10 mile run performance and gastrointestinal discomfort. Nine male recreational runners completed the 10 mile run under the following three conditions (1) no drinking (ND; 0 ml, 0 g carbohydrate), (2) ad-libitum drinking (AD; 315 ± 123 ml, 19 ± 7 g carbohydrate) and (3) prescribed drinking (PD; 1055 ± 90 ml, 64 ± 5 g carbohydrate) strategy. During the ad-libitum and prescribed drinking trials, drinks were provided on completion of mile 2, 4, 6 and 8. Running performance, speed (km/hr) and 10 mile run time, were assessed using a global positioning satellite system. The runner's ratings of perceived exertion and gastrointestinal comfort were recorded on completion of each lap of the 10 mile run. There was a significant difference (P<0.10) in the performance times for 10 mile race for the ND, AD and PD trials which were 72:05 ± 3:36 min:s; 71:14 ± 3:35 min:s and 72:12 ± 3.53 min:s respectively (P = 0.094). Ratings of gastrointestinal comfort were reduced during the PD trial, in comparison to both AD and ND trials. In conclusion, runners unaccustomed to habitually drinking carbohydrate-electrolyte beverages during training improved their 10 mile race performance with ad-libitum drinking a carbohydrate-electrolyte beverage, in comparison to drinking a prescribed volume of the same beverage or no drinking.
Ian Rollo; Clyde Williams; Louise Croft; Lewis James
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-4
Journal Detail:
Title:  International journal of sport nutrition and exercise metabolism     Volume:  -     ISSN:  1543-2742     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100939812     Medline TA:  Int J Sport Nutr Exerc Metab     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK.
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