vo2max presentation

vo2max presentation - VO2max What do we know and what do we...

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Unformatted text preview: VO2max: What do we know, and what do we still need to know? Benjamin D Levine What limits vo2max? Vo2max is a physiological characteristic bounded by the limits of the Fick Equation Vo2max= Q * (a-v)O2diff Elite endurance athletes have a high Vo2max What limits vo2max is uncertain Vo2max: the classical view Max rates of O2 utilization in skeletal muscle are limited by hearts ability to deliver O2 to working muscle Does a true Vo2max exist? Can we measure it? “upstream” and “downstream” factors “upstream factors”: physiological pathways which transfer o2 from environ to blood, pump into periphery then distribute to muscle cells “downstream factors”: all intracellular processes that occur once the o2 molecule is transferred to the inside of the cell for oxygen production of ATP *large part of this debate hinges on whether downstream factors (muscle motor recruitment) alone drive vo2max OR whether vo2max has upstream limits independent of muscle motor recruitment Testing the controversy…...
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vo2max presentation - VO2max What do we know and what do we...

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