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20 Jun 2026, 06:49
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
85%
(hard)
Question Stats:
37% (01:45) correct
63%
(01:43)
wrong
based on 89
sessions
History
Date
Time
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Not Attempted Yet
Aerobic exercise is clearly the most effective method for losing belly fat. A recent study conducted by Earl University Medical Center compared the effectiveness of aerobic exercise and resistance training in reducing abdominal fat. The study found that participants in the aerobic exercise group burned 67% more calories than those in the resistance training group.
Which of the following, if true, most seriously weakens the researchers' conclusion?
A. Another comprehensive study on various exercise methods found that Pilates, when practiced consistently for at least 3 weeks, leads to greater reduction in abdominal fat compared to aerobic exercise.
B. Participants who engaged in aerobic exercise without proper training reported a higher incidence of lower back injuries compared to those in the resistance training group.
C. A long-term follow-up study showed that 70% of participants who lost belly fat through aerobic exercise regained some or all of it within 12 months.
D. While aerobic exercise led to more immediate fat loss, resistance training participants showed greater improvements in overall body composition and metabolic rate over a 6-month period.
E. The study did not account for differences in participants' diets, which can significantly impact fat loss regardless of exercise type.
Which of the following, if true, most seriously weakens the researchers' conclusion?
A. Another comprehensive study on various exercise methods found that Pilates, when practiced consistently for at least 3 weeks, leads to greater reduction in abdominal fat compared to aerobic exercise.
B. Participants who engaged in aerobic exercise without proper training reported a higher incidence of lower back injuries compared to those in the resistance training group.
C. A long-term follow-up study showed that 70% of participants who lost belly fat through aerobic exercise regained some or all of it within 12 months.
D. While aerobic exercise led to more immediate fat loss, resistance training participants showed greater improvements in overall body composition and metabolic rate over a 6-month period.
E. The study did not account for differences in participants' diets, which can significantly impact fat loss regardless of exercise type.
20 Jun 2026, 14:25
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a is wrong answer is E please reconsider
20 Jun 2026, 14:45
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Aerobic exercise is clearly the most effective method for losing belly fat. A recent study conducted by Earl University Medical Center compared the effectiveness of aerobic exercise and resistance training in reducing abdominal fat. The study found that participants in the aerobic exercise group burned 67% more calories than those in the resistance training group.
Which of the following, if true, most seriously weakens the researchers' conclusion?
The conclusion is that aerobic exercise is the most effective method for reducing belly fat. The evidence only compares aerobic exercise with resistance training and focuses on calories burned. The strongest weakener would show that some other method reduces abdominal fat more effectively than aerobic exercise.
(A) Another comprehensive study on various exercise methods found that Pilates, when practiced consistently for at least 3 weeks, leads to greater reduction in abdominal fat compared to aerobic exercise.
This is correct. It directly attacks the claim that aerobic exercise is the most effective method. If Pilates produces greater abdominal fat reduction than aerobic exercise, then aerobic exercise is not clearly the most effective.
(B) Participants who engaged in aerobic exercise without proper training reported a higher incidence of lower back injuries compared to those in the resistance training group.
This raises a safety issue, but it does not show that aerobic exercise is less effective for reducing abdominal fat.
(C) A long-term follow-up study showed that 70% of participants who lost belly fat through aerobic exercise regained some or all of it within 12 months.
This weakens somewhat, but not as directly as A. Regaining fat later does not prove that another method is more effective at reducing it initially.
(D) While aerobic exercise led to more immediate fat loss, resistance training participants showed greater improvements in overall body composition and metabolic rate over a 6-month period.
This is tempting, but it shifts to overall body composition and metabolic rate. The conclusion is specifically about belly fat reduction.
(E) The study did not account for differences in participants' diets, which can significantly impact fat loss regardless of exercise type.
This weakens the study’s reliability, but it does not directly show that aerobic exercise is not the most effective method. It only shows a possible confounder.
Answer: (A)
Which of the following, if true, most seriously weakens the researchers' conclusion?
The conclusion is that aerobic exercise is the most effective method for reducing belly fat. The evidence only compares aerobic exercise with resistance training and focuses on calories burned. The strongest weakener would show that some other method reduces abdominal fat more effectively than aerobic exercise.
(A) Another comprehensive study on various exercise methods found that Pilates, when practiced consistently for at least 3 weeks, leads to greater reduction in abdominal fat compared to aerobic exercise.
This is correct. It directly attacks the claim that aerobic exercise is the most effective method. If Pilates produces greater abdominal fat reduction than aerobic exercise, then aerobic exercise is not clearly the most effective.
(B) Participants who engaged in aerobic exercise without proper training reported a higher incidence of lower back injuries compared to those in the resistance training group.
This raises a safety issue, but it does not show that aerobic exercise is less effective for reducing abdominal fat.
(C) A long-term follow-up study showed that 70% of participants who lost belly fat through aerobic exercise regained some or all of it within 12 months.
This weakens somewhat, but not as directly as A. Regaining fat later does not prove that another method is more effective at reducing it initially.
(D) While aerobic exercise led to more immediate fat loss, resistance training participants showed greater improvements in overall body composition and metabolic rate over a 6-month period.
This is tempting, but it shifts to overall body composition and metabolic rate. The conclusion is specifically about belly fat reduction.
(E) The study did not account for differences in participants' diets, which can significantly impact fat loss regardless of exercise type.
This weakens the study’s reliability, but it does not directly show that aerobic exercise is not the most effective method. It only shows a possible confounder.
Answer: (A)
