Research article summary (published 30 Mar 2004):

Energetics of middle-distance running performances in male and female junior using track measurements.

Full Abstract

The aim of this study was to determine the energetic factors of middle-distance running performance in junior elite runners according to gender and by using measurements from on-track performances. Fifteen elite runners (8 males and 7 females) were investigated by means of an incremental test and an all-out run over 600 m performed with a 2-d interval. We calculated (1) the aerobic maximal power (E(r max aero), in W kg(-1)), including VO(2 max) and the delay of attainment of VO(2 max) in the 600 m run; (2) the anaerobic power (E(r max anaero)), i.e., the oxygen deficit (J kg(-1)) divided by the duration of the 600 m run. Despite the difference in race duration (87 +/- 3 vs. 102 +/- 2 s), the 600 m run was made at the same relative value of the velocity associated with VO(2 max) (VVO(2 )max) in males and females (121.6 +/- 7 vs. 120 +/- 8% VO(2 max), p = 0.7). E(r max aero) explained most of the variance in the performance (the personal best performed 8 weeks later) between genders: 65 and 79% over 800 m (T(800)) and 1,500 m (T(1,500)). For females, E(r max aero) explained most of the variance of T(1,500) (r(2) = 0.66), and E(r max anaero) improved this prediction (r(2) = 0.84). No energetic factor predicted the performance on 800 m run in males. In elite junior athletes, the energetic model with individual data measured over an all-out 600 m performed on a track, provides an explanation for most of the variance in middle-distance running performances between genders. The distinction between aerobic power and anaerobic power allowed an improvement in the prediction of middle-distance running performances.

Author information

Author/s: Billat, Véronique L (VL); Lepretre, Pierre-Marie (PM); Heugas, Anne-Marie (AM); Koralsztein, Jean Pierre (JP);

Affiliation: Faculty of Sport Sciences, University of Evry-Val d'Essonne, Evry, France. veronique.billat(-atsign-)wanadoo.fr

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: The Japanese journal of physiology (Jpn J Physiol), published in Japan. (Language: eng)

Reference: 2004-Apr; vol 54 (issue 2) : pp 125-35

Dates: Created 2004/06/08; Completed 2005/01/04; Revised 2007/03/21;

PMID: 15182419, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adolescent Exercise - physiology Female Humans Male

Male Oxygen Consumption Physical Endurance - physiology Running - physiology Sex Factors

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