Energy system contribution to 100-m and 200-m track running events

Rob Duffield, Brian Dawson, Carmel Goodman

    Research output: Contribution to journalArticle

    44 Citations (Scopus)
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    Abstract

    While sprint track running events, lasting 10 ' 25 s, are characterised by an anaerobic metabolic dominance from anaerobic sources, no actual track running data exists which has quantified the relative energy system contributions. Using previous methods employed by our laboratory, including 'in race' measures of VO2, accumulated oxygen deficit (AOD), blood lactate concentration and estimated phosphocreatine degradation (La/PCr), the aerobic ' anaerobic energy system contributions to 100-m and 200-m events were calculated. For the 100-m event, results indicated a relative aerobic ' anaerobic energy system contribution (based on AOD measures) of 21% - 79% and 25 ' 75% for males and females respectively (9% - 91% and 11% - 89% based on La/PCr measures; p<0.05 for both genders for 100-m from AOD estimates). For the 200-m, a 28% - 72% and 33% - 67% contribution for male and female athletes was estimated (21% - 79% and 22% - 78% based on La/PCr measures; NS from AOD estimates). A range of energy system contribution estimates for events of these durations have previously been proposed using a variety of techniques. The data from the current study also shows different results depending on the measurement technique utilised. While AOD measures are often used to estimate anaerobic energy contribution, at such high exercise intensities (and brief exercise durations) as used in the present study, AOD measures showed larger aerobic energy estimates than expected.
    Original languageEnglish
    Pages (from-to)302-313
    Number of pages12
    JournalJournal of Science and Medicine in Sport
    Volume7
    Issue number3
    DOIs
    Publication statusPublished - 2004

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