Document Detail

Anaerobic and aerobic energy system contribution to 400-m flat and 400-m hurdles track running.
MedLine Citation:
PMID:  20703164     Owner:  NLM     Status:  MEDLINE    
The present study was designed to determine the aerobic and anaerobic energy contributions to 400-m Flat (400 mF) and 400-m hurdles (400 mH) using the accumulated oxygen deficit method. Six nationally ranked athletes, specializing in 400 mH and familiar with 400 mF volunteered to participate in this study. All the participants performed 3 track-running sessions. The first session determine the maximal oxygen uptake and maximal aerobic speed using lightweight ambulatory respiratory gas exchange measurements (o2000, Medical Graphics). The second and third tests consist of a 400 mF and a 400 mH performed on the track in a randomized counterbalanced order. Accumulated oxygen deficit determined during the 400 mF was significantly higher than that determined during the 400 mH (65.0 +/- 10.0 mlxkg vs. 44.1 +/- 7.4 mlxkg, p < 0.05). Thus, the aerobic contribution calculated was significantly higher during the 400 mH compared to during the 400 mF (43.0 +/- 2.0 vs. 37.4 +/- 2.7%, p < 0.05, respectively). These results strongly suggest that the aerobic contribution is greater during a 400 mH compared to during a 400 mF. Thus, this study provides a scientific rationale behind the coaches' practice and contributes to a better understanding of the differences between 400 mF and 400 mH. Then, the coaches must propose different training programs for both 400 mF and 400 mH runners.
Hasssane Zouhal; Georges Jabbour; Christophe Jacob; Dominique Duvigneau; Maïtel Botcazou; Abderraouf Ben Abderrahaman; Jacques Prioux; Elie Moussa
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  24     ISSN:  1533-4287     ISO Abbreviation:  J Strength Cond Res     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-08-30     Completed Date:  2010-12-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2309-15     Citation Subset:  IM    
Movement, Sport and Sciences Laboratory, University of Rennes, Rennes Cedex, France.
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MeSH Terms
Anaerobic Threshold / physiology*
Athletic Performance / physiology
Energy Metabolism / physiology*
Exercise Test
Heart Rate / physiology
Lactates / blood
Running / physiology
Track and Field / physiology*
Young Adult
Reg. No./Substance:

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

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