Document Detail


Energy expenditure and cardiorespiratory responses at the transition between walking and running.
MedLine Citation:
PMID:  7713073     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We investigated whether the spontaneous transition between walking and running during moving with increasing speed corresponds to the speed at which walking becomes less economical than running. Seven active male subjects [mean age, 23.7 (SEM 0.7) years, mean maximal oxygen uptake (VO2max), 57.5 (SEM 3.3) ml.kg-1.min-1, mean ventilatory threshold (VTh), 37.5 (SEM3) ml.kg-1.min-1] participated in this study. Each subject performed four exercise tests separated by 1-week intervals: test 1, VO2max and VTh were determined; test 2, the speed at which the transition between walking and running spontaneously occurs (ST) during increasing speed (increases of 0.5 km.h-1 every 4 min from 5 km.h-1) was determined; test 3, the subjects were constrained to walk for 4 min at ST, at ST +/- 0.5 km.h-1 and at ST +/- 1 km.h-1; and test 4, the subjects were constrained to run for 4 min at ST, at ST +/- 0.5 km.h-1 and at ST +/- 1 km.h-1. During exercise oxygen uptake (VO2), heart rate (HR), ventilation (VE), ventilatory equivalents for oxygen and carbon dioxide (VE/VO2, VE/VCO2), respiratory exchange ratio (R), stride length (SL), and stride frequency (SF) were measured.(ABSTRACT TRUNCATED AT 250 WORDS)
Authors:
J Mercier; D Le Gallais; M Durand; C Goudal; J P Micallef; C Préfaut
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European journal of applied physiology and occupational physiology     Volume:  69     ISSN:  0301-5548     ISO Abbreviation:  Eur J Appl Physiol Occup Physiol     Publication Date:  1994  
Date Detail:
Created Date:  1995-05-16     Completed Date:  1995-05-16     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0410266     Medline TA:  Eur J Appl Physiol Occup Physiol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  525-9     Citation Subset:  IM    
Affiliation:
Laboratoire de Physiologie des Interactions, Hôpital Arnaud de Villeneuve, Montpellier, France.
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MeSH Terms
Descriptor/Qualifier:
Adult
Blood Gas Analysis
Blood Pressure
Cardiovascular Physiological Phenomena*
Energy Metabolism / physiology*
Heart Rate
Humans
Male
Oxygen Consumption
Respiration / physiology*
Respiratory Function Tests
Running / physiology*
Walking / physiology*

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


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