A recent study of people who had successfully lost weight : GMAT Critical Reasoning (CR)
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 23 Jan 2017, 10:32

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# A recent study of people who had successfully lost weight

Author Message
TAGS:

### Hide Tags

Intern
Joined: 06 Jul 2012
Posts: 43
Followers: 0

Kudos [?]: 15 [2] , given: 36

### Show Tags

15 Sep 2012, 23:01
2
KUDOS
7
This post was
BOOKMARKED
00:00

Difficulty:

65% (hard)

Question Stats:

54% (02:24) correct 46% (01:18) wrong based on 550 sessions

### HideShow timer Statistics

A recent study of people who had successfully lost weight and implemented regular exercise routines in their twenties found that, by the age of forty, most had gained back the weight, stopped exercising regularly, or both. Surprisingly, among the study's subjects who had hired personal trainers to help them lose weight and exercise in their twenties, an even higher percentage had regained the weight or stopped exercising than among subjects who had not hired such trainers. The researchers concluded not only that remaining on an effective weight management and exercise program is difficult, but also that personal trainers are largely ineffective in helping people to remain on an effective weight management and exercise program.

Which of the following, if true, most weakens the argument in the passage above?

A. Subjects in the study who had hired personal trainers had, on average, more free time to exercise than did those who had not hired such trainers.
B. Some people hire personal trainers for sport-specific training or to rehabilitate injuries, rather than to lose weight or implement a regular exercise program.
C. The average person's metabolism slows significantly between the ages of thirty and forty, making it more difficult for people aged forty or older to avoid weight gain.
D. Many of the personal trainers hired by the people in the study were also dietitians who helped their clients design meal plans.
E. Most people who hire personal trainers do so, at least in part, because they lack sufficient motivation to remain on a diet or exercise regimen by themselves.

I selected option C because it targets the cause mentioned in the conclusion..... Can someone explain the correct ans?
[Reveal] Spoiler: OA

_________________

If you think you are lost, you are.

If you have any questions
New!
Senior Manager
Joined: 15 Jun 2010
Posts: 368
Schools: IE'14, ISB'14, Kellogg'15
WE 1: 7 Yrs in Automobile (Commercial Vehicle industry)
Followers: 11

Kudos [?]: 369 [1] , given: 50

Re: A recent study of people who had successfully lost weight an [#permalink]

### Show Tags

16 Sep 2012, 00:22
1
KUDOS
ravstime wrote:
A recent study of people who had successfully lost weight and implemented regular exercise routines in their twenties found that, by the age of forty, most had gained back the weight, stopped exercising regularly, or both. Surprisingly, among the study's subjects who had hired personal trainers to help them lose weight and exercise in their twenties, an even higher percentage had regained the weight or stopped exercising than among subjects who had not hired such trainers. The researchers concluded not only that remaining on an effective weight management and exercise program is difficult, but also that personal trainers are largely ineffective in helping people to remain on an effective weight management and exercise program.

Which of the following, if true, most weakens the argument in the passage above?

A. Subjects in the study who had hired personal trainers had, on average, more free time to exercise than did those who had not hired such trainers.
B. Some people hire personal trainers for sport-specific training or to rehabilitate injuries, rather than to lose weight or implement a regular exercise program.
C. The average person's metabolism slows significantly between the ages of thirty and forty, making it more difficult for people aged forty or older to avoid weight gain.
D. Many of the personal trainers hired by the people in the study were also dietitians who helped their clients design meal plans.
E. Most people who hire personal trainers do so, at least in part, because they lack sufficient motivation to remain on a diet or exercise regimen by themselves.

I selected option C because it targets the cause mentioned in the conclusion..... Can someone explain the correct ans?

Correct Choice is E.
According to C all subjects in the study will regain weight and there will be no difference between groups with PT and groups without PT.
The conclusion is "The researchers concluded not only that remaining on an effective weight management and exercise program is difficult, but also that personal trainers are largely ineffective in helping people to remain on an effective weight management and exercise program."
E brings out an alternate reasoning by showing that people with PT were partly lacking sufficient motivation to remain on diet & exercise. So the conclusion that PT are ineffective is falsified.
_________________

Regards
SD
-----------------------------
Press Kudos if you like my post.
Debrief 610-540-580-710(Long Journey): http://gmatclub.com/forum/from-600-540-580-710-finally-achieved-in-4th-attempt-142456.html

Senior Manager
Joined: 19 Apr 2011
Posts: 289
Schools: Booth,NUS,St.Gallon
Followers: 5

Kudos [?]: 283 [1] , given: 51

Re: A recent study of people who had successfully lost weight an [#permalink]

### Show Tags

17 Sep 2012, 01:13
1
KUDOS
I strongly feel that B is the answer. E does not account for the increase in weight loss in the 40's alone.Well if the people who lack self motivation hired trainers ,why is that they gained weight only in the 40's and not earlier.It is no where mentioned that the recipients are not under the guidance of the trainers in their 40's .
_________________

+1 if you like my explanation .Thanks

Manager
Joined: 30 Sep 2009
Posts: 124
Followers: 0

Kudos [?]: 27 [0], given: 183

Re: A recent study of people who had successfully lost weight an [#permalink]

### Show Tags

17 Sep 2012, 04:02
saikarthikreddy wrote:
I strongly feel that B is the answer. E does not account for the increase in weight loss in the 40's alone.Well if the people who lack self motivation hired trainers ,why is that they gained weight only in the 40's and not earlier.It is no where mentioned that the recipients are not under the guidance of the trainers in their 40's .

B does not differentiate the two groups and will not weaken the argument that personal trainers are largely ineffective in helping people to remain on an effective weight management and exercise program.

While E does tell has that its not the fault of trainers or that trainers are ineffective
Director
Affiliations: SAE
Joined: 11 Jul 2012
Posts: 510
Location: India
Concentration: Strategy, Social Entrepreneurship
GMAT 1: 710 Q49 V37
GPA: 3.5
WE: Project Management (Energy and Utilities)
Followers: 43

Kudos [?]: 259 [1] , given: 269

Re: A recent study of people who had successfully lost weight an [#permalink]

### Show Tags

18 Sep 2012, 07:03
1
KUDOS
2
This post was
BOOKMARKED
ravstime wrote:
A recent study of people who had successfully lost weight and implemented regular exercise routines in their twenties found that, by the age of forty, most had gained back the weight, stopped exercising regularly, or both. Surprisingly, among the study's subjects who had hired personal trainers to help them lose weight and exercise in their twenties, an even higher percentage had regained the weight or stopped exercising than among subjects who had not hired such trainers. The researchers concluded not only that remaining on an effective weight management and exercise program is difficult, but also that personal trainers are largely ineffective in helping people to remain on an effective weight management and exercise program.

Which of the following, if true, most weakens the argument in the passage above?

A. Subjects in the study who had hired personal trainers had, on average, more free time to exercise than did those who had not hired such trainers.
B. Some people hire personal trainers for sport-specific training or to rehabilitate injuries, rather than to lose weight or implement a regular exercise program.
C. The average person's metabolism slows significantly between the ages of thirty and forty, making it more difficult for people aged forty or older to avoid weight gain.
D. Many of the personal trainers hired by the people in the study were also dietitians who helped their clients design meal plans.
E. Most people who hire personal trainers do so, at least in part, because they lack sufficient motivation to remain on a diet or exercise regimen by themselves.

I selected option C because it targets the cause mentioned in the conclusion..... Can someone explain the correct ans?

Premise - A recent study of people who had successfully lost weight and implemented regular exercise routines in their twenties found that, by the age of forty, most had gained back the weight, stopped exercising regularly, or both. Surprisingly, among the study's subjects who had hired personal trainers to help them lose weight and exercise in their twenties, an even higher percentage had regained the weight or stopped exercising than among subjects who had not hired such trainers.

Conclusion - The researchers concluded not only that remaining on an effective weight management and exercise program is difficult, but also that personal trainers are largely ineffective in helping people to remain on an effective weight management and exercise program.

Anything which weakens the conclusion is our answer

A. Subjects in the study who had hired personal trainers had, on average, more free time to exercise than did those who had not hired such trainers. (Irrelevant)
B. Some people hire personal trainers for sport-specific training or to rehabilitate injuries, rather than to lose weight or implement a regular exercise program. (Irrelevant)
C. The average person's metabolism slows significantly between the ages of thirty and forty, making it more difficult for people aged forty or older to avoid weight gain. (This should be common to all and not just to those who exercised or maintained trainer)
D. Many of the personal trainers hired by the people in the study were also dietitians who helped their clients design meal plans. (It does not help us in anyway, although close)
E. Most people who hire personal trainers do so, at least in part, because they lack sufficient motivation to remain on a diet or exercise regimen by themselves. (This is our answer, it shows that personal trainers were more of a source of motivation than just trainers. So by 40’s the people in the survey had no trainer and no motivation to do exercise and thus gained weight)

Hope this helps !

_________________

First Attempt 710 - http://gmatclub.com/forum/first-attempt-141273.html

VP
Status: Final Lap Up!!!
Affiliations: NYK Line
Joined: 21 Sep 2012
Posts: 1096
Location: India
GMAT 1: 410 Q35 V11
GMAT 2: 530 Q44 V20
GMAT 3: 630 Q45 V31
GPA: 3.84
WE: Engineering (Transportation)
Followers: 37

Kudos [?]: 527 [1] , given: 70

Re: A recent study of people who had successfully lost weight [#permalink]

### Show Tags

25 Oct 2012, 01:24
1
KUDOS
i think B and E both does the same thing showing third thing as the cause, but E wins just because it mentions the word "Most" and B mentions " Some"
Intern
Joined: 03 Jul 2013
Posts: 48
Followers: 0

Kudos [?]: 5 [0], given: 9

Re: A recent study of people who had successfully lost weight [#permalink]

### Show Tags

16 Nov 2013, 02:20

B a close contender, however it targets a wrong group by generalizing i.e " some people" while the argument claims that those who hire personal trainers are worse of those who do not. On the other hand, E address the flaw with people who hire personal trainers
Manager
Status: folding sleeves up
Joined: 26 Apr 2013
Posts: 157
Location: India
Concentration: Finance, Strategy
GMAT 1: 530 Q39 V23
GMAT 2: 560 Q42 V26
GPA: 3.5
WE: Consulting (Computer Hardware)
Followers: 1

Kudos [?]: 85 [0], given: 39

Re: A recent study of people who had successfully lost weight [#permalink]

### Show Tags

03 Feb 2014, 09:59
Archit143 wrote:
i think B and E both does the same thing showing third thing as the cause, but E wins just because it mentions the word "Most" and B mentions " Some"

I chose B ...I missed "some" and "most". Perfect reasoning.

+1 Kudos to you
Intern
Joined: 22 Apr 2014
Posts: 2
Followers: 0

Kudos [?]: 0 [0], given: 8

Re: A recent study of people who had successfully lost weight [#permalink]

### Show Tags

10 Aug 2014, 07:23
What about option C. It says that in the forties, the metabolism doesn't allow to loose weight easily and thus provides us with a third reason. Also there is two parts of the conclusion and both should be answered, so not only the PTs are being questioned but also the general effectiveness of the program.
Option C gives the explanation to both the parts.
GMAT Club Legend
Joined: 01 Oct 2013
Posts: 10542
Followers: 919

Kudos [?]: 204 [0], given: 0

Re: A recent study of people who had successfully lost weight [#permalink]

### Show Tags

17 Oct 2015, 04:52
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
Intern
Joined: 10 Oct 2014
Posts: 16
GPA: 3.47
Followers: 0

Kudos [?]: 9 [0], given: 50

### Show Tags

17 Oct 2015, 17:54
kushjoy wrote:
What about option C. It says that in the forties, the metabolism doesn't allow to loose weight easily and thus provides us with a third reason. Also there is two parts of the conclusion and both should be answered, so not only the PTs are being questioned but also the general effectiveness of the program.
Option C gives the explanation to both the parts.

kushjoy

I think C is out of scope because of the following quotation:

"concluded not only that remaining on an effective weight management and exercise program is difficult"

It doesn't matter whether the metabolism slows between age 30-40, there is still a way to lose weight, although it is more difficult. The only way to achieve weight loss is to work harder, and if a person lacks the motivation, then they will gain weight.

Does that help?
Manager
Joined: 26 Jan 2015
Posts: 89
Followers: 0

Kudos [?]: 10 [0], given: 108

Re: A recent study of people who had successfully lost weight [#permalink]

### Show Tags

20 Feb 2016, 00:18
But as per E, Trainers were appointed for motivation. But they failed, since people lack motivation just after the trainer stops guiding them.

The conclusion says trainers are ineffective in helping people to remain in the same weight. Hence this statement is strengthening the conclusion?
_________________

Kudos is the best way to say Thank you! Please give me a kudos if you like my post

Re: A recent study of people who had successfully lost weight   [#permalink] 20 Feb 2016, 00:18
Similar topics Replies Last post
Similar
Topics:
3 A recent experiment revealed that people who successfully 6 22 May 2014, 11:47
22 A consumer magazine surveyed people who had sought 7 19 Nov 2013, 02:13
8 A recent study indicates that people who keep their workout 14 18 May 2013, 04:18
13 In a recent study of people afflicted by the Babblers 11 28 Apr 2013, 20:18
5 A Study followed a group of teenagers who had 5 02 Aug 2011, 11:16
Display posts from previous: Sort by