Topic 3

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  • Created by: rfraser96
  • Created on: 17-04-17 22:09
When would you use relative units to describe VO2 max?
If comparison between individuals is required (as their body mass is incorporated into the calculation) or a camparison with an individual over a long period during which weight may significantly change.
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In what situations would direct measurement be best?
where an accurate measure of oxygen uptake is required as uptake at maximal exercise is actually measured
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What are the physiological criteria for a true maximal effort?
Plateau in oxygen uptake: increase VO2 with increase in work rate; Respiratory exchange ratio > 1.15; maximum heart rate within 10 beats/min of age predicted heart rate; post - exercise blood > 8mmol/l; VO2 max vs VO2 peak
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What are the advantages of submaximal prediction of maximum oxygen uptake?
Avoids costs related to equipment, quicker (several subjects at same time), reduces safety issues related o maximal exercise
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On which relationship is the prediction of maximum oxygen uptake based?
linear relationship between heart rate (steady state heart rate for maximum VO2) and oxygen upake
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If true maximum heart rate is greater than predicted maximum heart rate, what effect would this have on predicted maximum oxygen uptake?
Some factors will affect heart rate and not VO2 max, like anxiety, dehydration etc; but if the prediction under estimates heart rate it is likely that the VO2 max will also be underestimated
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In what situations would direct measurement be best?

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where an accurate measure of oxygen uptake is required as uptake at maximal exercise is actually measured

Card 3

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What are the physiological criteria for a true maximal effort?

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Card 4

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What are the advantages of submaximal prediction of maximum oxygen uptake?

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Card 5

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On which relationship is the prediction of maximum oxygen uptake based?

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