Akela wrote:
Medical researcher: Scientists compared a large group of joggers who habitually stretch before jogging to an equal number of joggers who do not stretch before jogging. Both groups of joggers incurred roughly the same number of injuries. This indicates that stretching before jogging does not help to prevent injuries.
Which one of the following, if true, would most weaken the medical researcher’s argument?
(A) For both groups of joggers compared by the scientists, the rate of jogging injuries during the study was lower than the overall rate of jogging injuries.
(B) Among the joggers in the groups compared by the scientists, many of those previously injured while jogging experienced difficulty in their efforts to perform stretches.
(C) Most jogging injuries result from falls, collisions, and other mishaps on which the flexibility resulting from stretching would have little if any effect.
(D) The more prone a jogger is to jogging injuries, the more likely he or she is to develop the habit of performing stretches before jogging.
(E) Studies have found that, for certain forms of exercise, stretching beforehand can reduce the severity of injuries resulting from that exercise.
Source:LSAT
Conclusion :
stretching before jogging does not help to prevent injuries.So we should look for an answer option that would undermine this conclusion.
Option Analysis:
(A) For both groups of joggers compared by the scientists, the rate of jogging injuries during the study was lower than the overall rate of jogging injuries.
"Rate of jogging injuries" is not the concern and also it does not help explain why stretching would rather help prevent injuries. (B) Among the joggers in the groups compared by the scientists, many of those previously injured while jogging experienced difficulty in their efforts to perform stretches.
Out of Scope(C) Most jogging injuries result from falls, collisions, and other mishaps on which the flexibility resulting from stretching would have little if any effect.
"Flexibility" is not talked about.(D) The more prone a jogger is to jogging injuries, the more likely he or she is to develop the habit of performing stretches before jogging.
This hints that stretching does have some positive effect. Hold on to it. (E) Studies have found that, for certain forms of exercise, stretching beforehand can reduce the severity of injuries resulting from that exercise.
I dont know if jogging would be classified under "certain" exercises.Answer Option - D