Document Detail


The effect of exercise intensity and duration on the oxygen deficit and excess post-exercise oxygen consumption.
MedLine Citation:
PMID:  2347316     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Nine males with mean maximal oxygen consumption (VO2max) = 63.0 ml.kg-1.min-1, SD 5.7 and mean body fat = 10.6%, SD 3.1 each completed nine counterbalanced treatments comprising 20, 50 and 80 min of treadmill exercise at 30, 50 and 70% VO2max. The O2 deficit, 8 h excess post-exercise oxygen consumption (EPOC) and EPOC:O2 deficit ratio were calculated for all subjects relative to mean values obtained from 2 control days each lasting 9.3 h. The O2 deficit, which was essentially independent of exercise duration, increased significantly (P less than 0.05) with intensity such that the overall mean values for the three 30%, 50% and 70% VO2max workloads were 0.83, 1.89 and 3.09 l, respectively. While there were no significant differences (P greater than 0.05) between the three EPOCs after walking at 30% VO2max for 20 (1.01 l), 50 (1.43 l) and 80 min (1.04 l), respectively, the EPOC thereafter increased (P less than 0.05) with both intensity and duration such that the increments were much greater for the three 70% VO2max workloads (EPOC: 20 min = 5.68 l; 50 min = 10.04 l; 80 min = 14.59 l) than for the three 50% VO2max workloads (EPOC: 20 min = 3.14 l; 50 min = 5.19 l; 80 min = 6.10 l). An analysis of variance indicated that exercise intensity was the major determinant of the EPOC since it explained five times more of the EPOC variance than either exercise duration or the intensity times duration interaction. The mean EPOC:O2 deficit ratio ranged from 0.8 to 4.5 and generally increased with both exercise intensity and duration.(ABSTRACT TRUNCATED AT 250 WORDS)
Authors:
C J Gore; R T Withers
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  European journal of applied physiology and occupational physiology     Volume:  60     ISSN:  0301-5548     ISO Abbreviation:  Eur J Appl Physiol Occup Physiol     Publication Date:  1990  
Date Detail:
Created Date:  1990-07-12     Completed Date:  1990-07-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0410266     Medline TA:  Eur J Appl Physiol Occup Physiol     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  169-74     Citation Subset:  IM; S    
Affiliation:
Exercise Physiology Laboratory, School of Education, Flinders University of South Australia, Bedford Park.
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MeSH Terms
Descriptor/Qualifier:
Adult
Anoxia / metabolism,  physiopathology*
Exercise / physiology*
Humans
Male
Oxygen / metabolism*
Oxygen Consumption / physiology*
Chemical
Reg. No./Substance:
7782-44-7/Oxygen
Comments/Corrections
Erratum In:
Eur J Appl Physiol 1990;60(5):406

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


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