A 1978 study of Harvard alumni found those who expended 2,000 kcal weekly (like 20 miles of jogging or equivalent weekly) had lower heart attack risk than those less physically active. What else did this study find?
A) More exercise also benefited the men who were smokers.
B) More exercise also benefited the men with hypertension.
C) More exercise also benefited the men in both (a) and (b).
D) More exercise than 2,000 kcal lowered heart risk further.
Question 2
A series of landmark longitudinal studies begun in the 1950s with San Francisco longshoremen by Paffenbarger and associates found which of the following relative to coronary heart disease (CHD) and physical activity (PA)?
A) Men who began in worse shape had higher CHD death rates despite PA.
B) Men who began in better shape had lower CHD death rates despite PA.
C) Men who had less PA over time had significantly greater CHD deaths.
D) Men who had more PA over time had significantly higher CHD deaths.
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