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OG CR:Many athletes inhale pure oxygen after exercise

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NandishSS Master | Next Rank: 500 Posts Default Avatar
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OG CR:Many athletes inhale pure oxygen after exercise

Post Fri Sep 16, 2016 10:48 pm
Many athletes inhale pure oxygen after exercise in an attempt to increase muscular re-absorption of oxygen. Measured continuously after exercise, however, the blood lactate levels of athletes who inhale pure oxygen are practically identical, on average, to those of athletes who breathe normal air. The lower the blood lactate level is, the higher the muscular re-absorption of oxygen is.

If the statements above are all true, they most strongly support which of the following conclusions?

A) Athletes’ muscular re-absorption of oxygen is not increased when they inhale pure oxygen instead of normal air.
B) High blood lactate levels cannot be reduced.
C) Blood lactate levels are a poor measure of oxygen re-absorption by muscles.
D) The amount of oxygen reabsorbed by an athlete’s muscles always remains constant.
E) The inhaling of pure oxygen has no legitimate role in athletics.

OA:A

Source:OG 2017

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crackverbal Master | Next Rank: 500 Posts
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Post Tue Mar 07, 2017 6:27 am
Simplify the argument.

Premise 1 - many athletes inhale pure oxygen after exercise in an attempt to increase re-absorption of oxygen
Premise 2 - blood lactate levels of athletes, measured after exercise, are similar to those of athletes who breathe normal air.
Premise 3 - lower blood lactate level = higher muscular re-absorption of oxygen

Therefore, if blood lactate levels are similar after inhaling pure oxygen, it implies that breathing pure oxygen does not do much to increase muscular re-absorption of oxygen.

Which option states this? Option A.

Option B - Incorrect.
Nowhere is it mentioned that blood lactate levels cannot be reduced.

Option C - Incorrect.
this directly contradicts what is told in the question - "The lower the blood lactate level is, the higher the muscular re-absorption of oxygen is."

Option D - Incorrect.
The argument does not say that amount reabsorbed will always be constant.

Option E - Incorrect.
It might have legitimate benefits other than increasing muscular re-absorption of oxygen.
So, we cannot dismiss it entirely.

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NandishSS Master | Next Rank: 500 Posts Default Avatar
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Post Tue Feb 28, 2017 5:53 pm
Bumping the thread for the experts review.

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