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Characteristics of the V̇O2 Slow Component During Heavy Exercise in Humans Aged 30 to 80 Years

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Advances in Modeling and Control of Ventilation

Part of the book series: Advances in Experimental Medicine and Biology ((AEMB,volume 450))

Abstract

At the onset of moderate intensity exercise oxygen uptake (V̇O2) increases exponentially from baseline to a new steady-state value. The steady-state V̇O2is linearly related to work rate, such that: ΔV̇O2/ΔWR ≈ 10 (ml·min-1·W-1. When the exercise intensity is heavy, inducing a sustained increase in blood lactate concentration, then the attainment of steady-state may be delayed, or even prevented, and a slow component of increasing V̇O2is observed (10). Thus, during heavy exercise the AV?̇O2/ΔWR relationship is increased (ΔV̇O2/ΔWR > 10) and becomes non-linear.

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Author information

Authors and Affiliations

  1. Centre for Activity and Ageing, School of Kinesiology, The University of Western Ontario, London, Ontario, Canada, N6A 3K7

    C. Bell, D. H. Paterson & D. A. Cunningham

  2. Neurodiagnostics, John D. Dingell VA Medical Center, 4646 John R, Detroit, Michigan, 48202, USA

    M. A. Babcock

  3. Department of Physiology, The University of Western Ontario, Canada

    D. A. Cunningham

Authors
  1. C. Bell
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  2. D. H. Paterson
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  3. M. A. Babcock
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  4. D. A. Cunningham
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Editor information

Editors and Affiliations

  1. University of Waterloo, Waterloo, Ontario, Canada

    Richard L. Hughson

  2. University of Western Ontario, London, Ontario, Canada

    David A. Cunningham

  3. University of Toronto, Toronto, Ontario, Canada

    James Duffin

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© 1998 Springer Science+Business Media New York

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Bell, C., Paterson, D.H., Babcock, M.A., Cunningham, D.A. (1998). Characteristics of the V̇O2 Slow Component During Heavy Exercise in Humans Aged 30 to 80 Years. In: Hughson, R.L., Cunningham, D.A., Duffin, J. (eds) Advances in Modeling and Control of Ventilation. Advances in Experimental Medicine and Biology, vol 450. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9077-1_35

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  • DOI: https://doi.org/10.1007/978-1-4757-9077-1_35

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4757-9079-5

  • Online ISBN: 978-1-4757-9077-1

  • eBook Packages: Springer Book Archive

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