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    Comparison of fat oxidation over a range of intensities during treadmill and cycling exercise in children

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    Authors
    Zakrzewski-Fruer, Julia K.
    Tolfrey, Keith
    Issue Date
    2011
    Subjects
    C600 Sports Science
    exercise
    fat oxidation
    children
    
    Metadata
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    Abstract
    Substrate metabolism differs between children and adults and is important for weight management during childhood. A direct comparison of fat oxidation over a range of exercise intensities and the estimation of Fatmax (exercise intensity that elicits maximal fat oxidation (MFO)) during treadmill (TM) and cycling exercise (CE) does not appear to be available in children. Fat oxidation and Fatmax were compared during TM and CE in 22 pre- to early pubertal children (9 girls and 13 boys). Fat oxidation was higher for TM compared with CE over a range of absolute and relative exercise intensities and this difference was more pronounced at higher intensities (P ≤ 0.05). Fat oxidation was higher in boys compared with girls at similar relative, but not absolute intensities (P ≤ 0.05). Fatmax was higher during TM compared with CE and higher in boys compared with girls (P ≤ 0.05). The 5% Fatmax zone (range of exercise intensities where fat oxidation was within 5% of MFO) spanned a wider range of intensities for TM compared with CE (P ≤ 0.05). Collectively, these findings suggest that exercise programmes aimed at promoting high rates of fat oxidation in pre- to early pubertal children should include TM rather than CE regardless of exercise intensity. Furthermore, Fatmax values indicate that brisk walking or slow running promotes MFO rates in this population.
    Citation
    Zakrzewski, J. & Tolfrey, K. (2011) 'Comparison of fat oxidation over a range of intensities during treadmill and cycling exercise in children', European Journal of Applied Physiology, 112(1), pp.163-171
    Publisher
    Springer
    Journal
    European Journal of Applied Physiology
    URI
    http://hdl.handle.net/10547/294846
    DOI
    10.1007/s00421-011-1965-5
    Additional Links
    http://link.springer.com/10.1007/s00421-011-1965-5
    Type
    Article
    Language
    en
    ISSN
    1439-6319
    1439-6327
    ae974a485f413a2113503eed53cd6c53
    10.1007/s00421-011-1965-5
    Scopus Count
    Collections
    Applied Sport and Exercise Physiology

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