KNR 280 Lecture Notes - Anaerobic Glycolysis, Phosphagen, Citric Acid Cycle
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Lab #3 - Maximal Oxygen Uptake (VO2max) Test
Name (s): ____________________________
1. We measured several variables during the cycle ergometry maximal oxygen uptake
laboratory. Specifically, the data collection sheet has columns labeled RER, HR,
BP, and VO2. Define each of these variables and describe the information they
provide (for example, what is RER and how can it be useful)?
2. Define maximal aerobic capacity, VO2max, in your own words. Please note that this is
different from just VO2 as in the first question. Information about which energy
system(s) is provided by assessing maximal aerobic capacity?
V02max is the maximum amount of oxygen that an individual can utilize during intense
or maximal exercise. The aerobic system (aerobic glycolysis + krebs cycle + ETS-
OP) is shown in table 3.1 of our textbook, that it has the highest capacity amongst
the phosphagen and anaerobic glycolysis systems.
3. What does it mean to express VO2 in relative terms (i.e. relative to what?)? What are
the units used to express VO2 in relative terms? What are the units used to
express VO2 in absolute terms? Why would one express VO2 in relative terms?
When VO2 is expressed in relative terms, this would mean that we would look into the
person’s weight while considering their VO2, providing us with a more accurate
measurement than measuring in absolute terms. For example, if a 190 lb man and
a 150 lb woman participate in a VO2 test, the results would indicate that in
absolute terms, the results for both the man and the woman could be the same (i.e
both resulting in 3.2 ml.min). This why relative is more accurate than absolute
because the results take into consideration the weight of each participant,
recognizing the difference of the body sizes and adjusting the results.
4. Convert the VO2 values from the exercise test into both absolute and relative terms. In
the data collection sheet, fill in the last column (it is highlighted) so the data sheet
includes both absolute and relative values for VO2. Don’t forget to provide the
units for the VO2 values in the last column as well (hint: one of them is already
provided – you need to convert the values and list them for the units you don’t
5. What would be considered an average VO2max for college-aged males and females?
What might be considered a high VO2max? A low VO2max? How does our
subject’s VO2max data compare to normative data that we have discussed
previously in class?
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