Question

several groups of researchers were conducting experiments to study how exercise affects cholesterol levels. one group had college students run two miles a day for six weeks. another group had senior citizens participate in gentle water aerobics twice a week for a year. cholesterol levels dropped slightly among the college students but dropped significantly among the senior citizens. based on these results, what should the researchers plan to do next to validate the findings?

conclude that moderate exercise is more beneficial at lowering cholesterol levels than intense exercise.

determine that exercise is more useful in lowering cholesterol levels in older people than young adults.

design more studies testing the effect of duration and intensity of exercise on cholesterol levels in different age groups.

repeat the experiment on college students using different groups of students until the results show a drop in cholesterol levels.

Explanation:

Answer:

Design more studies testing the effect of duration and intensity of exercise on cholesterol levels in different age groups.