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# One of the limiting factors in human physical performance is

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22 Sep 2008, 15:54
You got it wrong. The performance does not decrease because the oxygen is absorbed by the muscle!. It decreases (according to the passage) because there isn't enough oxygen available to keep up with requirement of the exercising muscle. That is why oxygen has been called the "limiting factor"-its being used up limits the amount of exercise that can be achieved.
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22 Sep 2008, 16:48
I got this question from one of the gmat sets exam and B is given as OA. But I am not convince
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22 Sep 2008, 20:18
Looks like the OA is A, after all. I am not sure how the OA could be different for two folks who came across the same question. Interesting question anyway.

Check this for a detailed discussion on this particular question from way back in 2007on this forum:

http://gmatclub.com/forum/viewtopic.php?p=373713#373713
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24 Sep 2008, 05:38
B for me. where is this question from?
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07 Oct 2009, 21:39
One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream. Accordingly, entrepreneurs have begun selling at gymnasiums and health clubs bottles of drinking water, labeled “SuperOXY,” that has extra oxygen dissolved in the water. Such water would be useless in improving physical performance, however, since the only way to get oxygen into the bloodstream so that it can be absorbed bye the muscles is through the lungs.

Which of the following, if true, would serve the same function in the argument as the statement in boldface?
A. the water lost in exercising can be replaced with ordinary tap water
B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb
C. world-class athletes turn in record performance without such water
D. frequent physical exercise increases the body’s ability to take in and use oxygen
E. lack of oxygen is not the only factor limiting human physical performance
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07 Oct 2009, 23:47
For me its C.
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07 Oct 2009, 23:56
Water ->increase the amount of 02 in the bloodstream -> increase physical performance.

B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb

Which of the following, if true, would serve the same function in the argument as the statement in boldface?
A. the water lost in exercising can be replaced with ordinary tap water
B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb
C. world-class athletes turn in record performance without such water
D. frequent physical exercise increases the body’s ability to take in and use oxygen
E. lack of oxygen is not the only factor limiting human physical performance
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08 Oct 2009, 03:37
OA - A. Actually a bit difficult to interpret but becomes clear when you read this part of the last sentence:
Such water would be useless in improving physical performance, however, since the only way to get oxygen into the bloodstream so that it can be absorbed bye the muscles is through the lungs
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08 Oct 2009, 03:42
tkarthi4u wrote:
Water ->increase the amount of 02 in the bloodstream -> increase physical performance.

B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb

Which of the following, if true, would serve the same function in the argument as the statement in boldface?
A. the water lost in exercising can be replaced with ordinary tap water
B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb
C. world-class athletes turn in record performance without such water
D. frequent physical exercise increases the body’s ability to take in and use oxygen
E. lack of oxygen is not the only factor limiting human physical performance

I agree.

line of reasoning:
statement: lack of oxygen --> limit performance

conclusion: oxygen is absorbed only by the lungs --> super oxy does not help
(main point: oxygen absorption)

B's statement:
oxygen in breath is enough and more would be unnecessary --> super oxy does not help

(dang, I hate CR with boldfaces )

OA?
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08 Oct 2009, 12:29
I think the answer to this question is B because the statement in boldface suggects
one of the reason why such water would not be usefull in physical performance. Option
B suggect another rason thatsince oxygen is alrady sufficient sufficient for muscles to absorb,
such water will be useleass.
A should be wrong because ordinary tap water can replace the water does not mean SuperOXY become useless.
For example, A medicine curing an desease does not implies that other medicine curing the same desease will become useless.
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08 Oct 2009, 14:25
What is the source of the OA?

It doesn't seem right as A.

The bold face statement is an explanation as to why "such water would be useless in improving physical performance"

We need another reason as to why the water would be useless in improving physical performance. A gives us "tapwater will do the same thing to replace lost water". However the reason that SuperOXY is better is because it provides more oxygen not that it acts similarly to water.

Only B provides the proper reasoning.
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08 Oct 2009, 15:02
Expert's post

The source is: Official GMAT SET21 Q33 (Official GMAC Question)
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30 Apr 2011, 02:56
'How ELSE can we make the Bottled water useless aside from the fact that the oxygen it provides can't be gainfully used by the body? Well, given that the oxygen it provides is useless, the only other use of bottled water COULD be to replenish the body's water lost due to exercising. And this can be easily replenished by Tap water and this is what the choice A states.'

why are you so bent on making the bottled water useless( replaceable by tap water ) ? is it because the conclusion says
'the water is useless in improving physical performance ?'

A says that the water lost during exercising can be replaced by tap water ...

is the question about oxygen absorption or utility of water ? where to focus ?
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13 Sep 2011, 07:51
B....
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Re: One of the limiting factors in human physical performance is [#permalink]

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12 Apr 2012, 10:37
Conclusion : " Such water would be useless in improving physical performance"

Role of Bold Statement "the only way to get oxygen into the bloodstream so that it can be absorbed bye the muscles is through the lungs. "

This statement is supporting the Conclusion. So we need to find a statement that supports the conclusion.

A. the water lost in exercising can be replaced with ordinary tap water ...slightly supporting ..'s'
B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb .... 'not related'
C. world-class athletes turn in record performance without such water ...... "Strongly supporting"
D. frequent physical exercise increases the body’s ability to take in and use oxygen ... not related
E. lack of oxygen is not the only factor limiting human physical performance .... not related

Therefore , my answer is 'C'
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Re: One of the limiting factors in human physical performance is [#permalink]

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15 Apr 2012, 03:50
Guys,

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Re: One of the limiting factors in human physical performance is [#permalink]

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12 Nov 2013, 01:22
Bumping for review and further discussion

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Re: One of the limiting factors in human physical performance is [#permalink]

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12 Nov 2013, 12:59
B for me.

Which of the following, if true, would serve the same function in the argument as the statement in boldface?
Statement in boldface : the only way to get oxygen into the bloodstream so that it can be absorbed bye the muscles is through the lungs.

The correct option should be able to replace this statement because it has to hurt the argument .

A. Such water would be useless in improving physical performance, however, since the water lost in exercising can be replaced with ordinary tap water . Incorrect. Even if tap water were enough to replace, nothing hampers the argument that oxygen bottles will be rendered useless.

C. world-class athletes turn in record performance without such water. Irrelevant!
D. frequent physical exercise increases the body’s ability to take in and use oxygen. Irrelevant for reasoning against the use of bottled water.
E. lack of oxygen is not the only factor limiting human physical performance. Even if lack of oxygen is one of the factors, bottled water containing oxygen would help. Hence this goes against the statement " Such water would be useless in improving physical performance".

B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb. Correct .
Such water would be useless in improving physical performance, however, since "the amount of oxygen is ... already more than muscles can absorb."
If the amount of oxygen is already more than muscles can take- then any number of oxygenated bottles will be useless !
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Re: One of the limiting factors in human physical performance is [#permalink]

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13 Nov 2013, 02:03
surbhi87 wrote:
B for me.

Which of the following, if true, would serve the same function in the argument as the statement in boldface?
Statement in boldface : the only way to get oxygen into the bloodstream so that it can be absorbed bye the muscles is through the lungs.

The correct option should be able to replace this statement because it has to hurt the argument .

A. Such water would be useless in improving physical performance, however, since the water lost in exercising can be replaced with ordinary tap water . Incorrect. Even if tap water were enough to replace, nothing hampers the argument that oxygen bottles will be rendered useless.

C. world-class athletes turn in record performance without such water. Irrelevant!
D. frequent physical exercise increases the body’s ability to take in and use oxygen. Irrelevant for reasoning against the use of bottled water.
E. lack of oxygen is not the only factor limiting human physical performance. Even if lack of oxygen is one of the factors, bottled water containing oxygen would help. Hence this goes against the statement " Such water would be useless in improving physical performance".

B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb. Correct .
Such water would be useless in improving physical performance, however, since "the amount of oxygen is ... already more than muscles can absorb."
If the amount of oxygen is already more than muscles can take- then any number of oxygenated bottles will be useless !

Why not E?
If oxygen is not the only limiting factor, than drinking more water with it will not enhance performance as you are limited by something else...?
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Re: One of the limiting factors in human physical performance is [#permalink]

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13 Nov 2013, 02:11
ronr34 wrote:
surbhi87 wrote:
B for me.

Which of the following, if true, would serve the same function in the argument as the statement in boldface?
Statement in boldface : the only way to get oxygen into the bloodstream so that it can be absorbed bye the muscles is through the lungs.

The correct option should be able to replace this statement because it has to hurt the argument .

A. Such water would be useless in improving physical performance, however, since the water lost in exercising can be replaced with ordinary tap water . Incorrect. Even if tap water were enough to replace, nothing hampers the argument that oxygen bottles will be rendered useless.

C. world-class athletes turn in record performance without such water. Irrelevant!
D. frequent physical exercise increases the body’s ability to take in and use oxygen. Irrelevant for reasoning against the use of bottled water.
E. lack of oxygen is not the only factor limiting human physical performance. Even if lack of oxygen is one of the factors, bottled water containing oxygen would help. Hence this goes against the statement " Such water would be useless in improving physical performance".

B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb. Correct .
Such water would be useless in improving physical performance, however, since "the amount of oxygen is ... already more than muscles can absorb."
If the amount of oxygen is already more than muscles can take- then any number of oxygenated bottles will be useless !

Why not E?
If oxygen is not the only limiting factor, than drinking more water with it will not enhance performance as you are limited by something else...?

If oxygen is not the ONLY limiting factor--- means that oxygen is still ONE of all the factors that limit human physical performance. In this case, if oxygen bottles were used (as per the argument), then they would not be totally useless ! They would definitely be of SOME help since we've established that oxygen IS one of the limiting factors.
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Re: One of the limiting factors in human physical performance is   [#permalink] 13 Nov 2013, 02:11

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