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    The relative contributions of anaerobic and aerobic energy supply during track 100-, 400- and 800-m performance.

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    Authors
    Nevill, Alan M.
    Ramsbottom, Roger
    Nevill, Mary E.
    Newport, S.
    Williams, C.
    Issue Date
    2008
    
    Metadata
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    Abstract
    AIM: The present study set out to identify the relative contribution of the laboratory determined physiological measures, (maximal) accumulated oxygen deficit (AOD) and maximal oxygen uptake (VO(2max)), when predicting track performance. METHODS: Fourteen volunteers (men: n=10; women: n=4); mean (+/- standard deviation [SD]) height 1.76+/-0.1 (men) vs 1.62+/-0.08 m (women); body mass: 67.9+/-7.1 (men) vs 50.6+/-8.2 kg (women), ran track races at distances of 100, 400 and 800 m. The individually determined (maximal) AOD and VO(2max) were measured under controlled laboratory conditions (68.3+/-10.2 vs 60.7+/-16.1; men vs women, mL.(2).Eq.kg(-1)) and (68.7+/-7.3 vs 55.6+/-4.3; men vs women, mL.kg(-1).min(-1)), respectively. RESULTS: Track performance could be predicted using both laboratory measures, AOD and , with a high degree of accuracy: R2=76.9%, 84.8% and 89.1% for 100, 400 and 800 m, respectively. Data analysis confirmed the dominant energy supply during 100-m sprinting was the anaerobic energy supply processes, reflected as AOD. In contrast, oxidative metabolism (reflected as VO(2max)) was the dominant source of energy supply during 800-m performance. CONCLUSION: The results support earlier research, rather than present textbook dogma, namely that aerobic and anaerobic processes contribute equally to maximal exercise lasting approximately 60 s.
    Citation
    The Journal of Sports Medicine and Physical Fitness, 48(2): 138-142
    Publisher
    Edizione Minerva Medica
    URI
    http://hdl.handle.net/2436/29879
    PubMed ID
    18427406
    Additional Links
    http://www.minervamedica.it/index2.t
    Type
    Journal article
    Language
    en
    ISSN
    0022-4707
    Collections
    Faculty of Education, Health and Wellbeing

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