Document Detail


Excessive oxygen uptake during exercise and recovery in heavy exercise.
MedLine Citation:
PMID:  17298213     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to determine whether excessive oxygen uptake (Vo2) occurs not only during exercise but also during recovery after heavy exercise. After previous exercise at zero watts for 4 min, the main exercise was performed for 10 min. Then recovery exercise at zero watts was performed for 10 min. The main exercises were moderate and heavy exercises at exercise intensities of 40 % and 70 % of peak Vo2, respectively. Vo2 kinetics above zero watts was obtained by subtracting Vo2 at zero watts of previous exercise (DeltaVo2). Delta Vo2 in moderate exercise was multiplied by the ratio of power output performed in moderate and heavy exercises so as to estimate the Delta Vo2 applicable to heavy exercise. The difference between Delta Vo2 in heavy exercise and Delta Vo2 estimated from the value of moderate exercise was obtained. The obtained Vo2 was defined as excessive Vo2. The time constant of excessive Vo2 during exercise (1.88+/-0.70 min) was significantly shorter than that during recovery (9.61+/-6.92 min). Thus, there was excessive Vo2 during recovery from heavy exercise, suggesting that O2/ATP ratio becomes high after a time delay in heavy exercise and the high ratio continues until recovery.
Authors:
T Yano; T Yunoki; R Matsuura; T Arimitsu; T Kimura
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Publication Detail:
Type:  Journal Article     Date:  2007-02-08
Journal Detail:
Title:  Physiological research / Academia Scientiarum Bohemoslovaca     Volume:  56     ISSN:  0862-8408     ISO Abbreviation:  Physiol Res     Publication Date:  2007  
Date Detail:
Created Date:  2008-01-16     Completed Date:  2008-04-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9112413     Medline TA:  Physiol Res     Country:  Czech Republic    
Other Details:
Languages:  eng     Pagination:  721-5     Citation Subset:  IM    
Affiliation:
Exercise Physiology, Graduate School of Education, Hokkaido University, Sapporo, Japan. yano@edu.hokudai.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Adult
Aerobiosis / physiology
Algorithms
Exercise / physiology*
Exercise Test
Humans
Kinetics
Male
Oxygen Consumption / physiology*

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