Document Detail


Carbohydrate attenuates perceived exertion during intermittent exercise and recovery.
MedLine Citation:
PMID:  17468589     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: The purpose of this study was to examine the effect of carbohydrate supplementation on differentiated and undifferentiated ratings of perceived exertion (RPE) during prolonged intermittent exercise and recovery. METHODS: Twelve male subjects cycled for 2.0 h at 64% Wmax and 73% V O2peak with 3-min rest intervals interspersed every 10 min (2.6 h of total exercise time, including rest intervals) with placebo (P) or carbohydrate (C) beverages. RPE was assessed during the last minute of each 10-min exercise interval and then every 30 s during the 3-min recovery period. RESULTS: The pattern of change in RPE over time was significantly different between C and P ingestion (P < 0.05), with attenuated RPE responses found for both overall body (O) and legs (L). A significant main effect was found for recovery RPE-O between C and P ingestion (P < 0.05), with attenuated RPE responses found in the later part of the 2-h run. C relative to P ingestion was associated with higher respiratory exchange ratios and plasma levels of glucose and with lower levels of plasma cortisol. CONCLUSIONS: These data indicate that carbohydrate supplementation attenuates perceived exertion during prolonged intermittent exercise and recovery.
Authors:
Alan C Utter; Jie Kang; David C Nieman; Charles L Dumke; Steven R McAnulty; Lisa S McAnulty
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  39     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-04-30     Completed Date:  2007-07-03     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  880-5     Citation Subset:  IM; S    
Affiliation:
Departments of Health, Leisure, and Exercise Science, Appalachian State University, Boone, NC 28608, USA. utterac@appstate.edu
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MeSH Terms
Descriptor/Qualifier:
Bicycling / physiology*
Carbohydrates / pharmacology*
Fatigue / blood,  psychology*
Humans
Male
North Carolina
Physical Exertion*
Placebos
Rest / physiology*
Chemical
Reg. No./Substance:
0/Carbohydrates; 0/Placebos

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


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