Document Detail


Are there differences in running economy at different velocities for well-trained distance runners?
MedLine Citation:
PMID:  20024579     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present study investigated whether there are differences in running economy at different velocities for well-trained distance runners, and to what extent a commonly used incremental protocol for measuring oxygen uptake (VO(2)) at different velocities affects the reliability of these measurements. Fifteen well-trained distance runners (9 male and 6 female) participated in this study. Gross oxygen cost of running (C (R)), heart rate (HR) and [La(-)](b) during 5-min runs at velocities ranging from 8.0 to 17 km h(-1), representing intensities ranging from 60 to 90% of maximal oxygen consumption (VO(2max)) was measured on two different days in random order. The athletes were also tested for lactate threshold, VO(2max) and time to exhaustion at MAS ((t)MAS). No significant differences in C (R) between the different relative velocities or the different set velocities were found up to 90% of VO(2max). The incremental protocol for measuring VO(2) at different velocities was found not to affect the reliability of these measurements. All athletes reached their VO(2max) whilst running to exhaustion at MAS. The females showed significantly lower VO(2max), but significantly better C (R) than the males. At velocities representing intensities between 60 and 90% of VO(2max), no differences in C (R) were found. The commonly used incremental protocol for measuring oxygen uptake (VO(2)) at different velocities was found not to affect the reliability of these measurements. This means that C (R) measured at sub-maximal velocities are representative for C (R) at race velocity for distances above 10,000 m for most runners.
Authors:
Jan Helgerud; Oyvind St?ren; Jan Hoff
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2009-12-19
Journal Detail:
Title:  European journal of applied physiology     Volume:  108     ISSN:  1439-6327     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-03-22     Completed Date:  2010-06-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1099-105     Citation Subset:  IM    
Affiliation:
Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, 7489 Trondheim, Norway. Jan.Helgerud@ntnu.no
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MeSH Terms
Descriptor/Qualifier:
Adult
Energy Transfer / physiology*
Female
Humans
Male
Oxygen Consumption / physiology*
Physical Exertion / physiology*
Physical Fitness / physiology*
Running / physiology*
Task Performance and Analysis*

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


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