In a study by Blumenthal and colleagues, men were assigned to one of two treatment conditions.Half the men were involved in aerobic activity, and the remainder engaged in nonaerobic strength-and-flexibility training.After 12 weeks, the researchers found:

Question

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The study found that the men in the aerobic group showed lower blood pressure and heart rate in situations involving mental stress. This suggests that aerobic activity may be more effective than nonaerobic strength-and-flexibility training in reducing the physiological responses to stress. Option A is incorrect as it suggests that nonaerobic training was more effective in reducing blood pressure and heart rate, which is not supported by the study. Option B is incorrect as it suggests that both groups showed a similar reduction in blood pressure and heart rate, which is not what the study found. Option D is incorrect as it suggests that neither group showed any reduction in blood pressure or heart rate, which is not supported by the study.

In a Study by Blumenthal and Colleagues, Men Were Assigned