Question

a group of researchers were conducting experiments to study how exercise affects cholesterol levels. one group had college students and another had senior citizens participate in gentle water aerobics twice a week for a year. cholesterol levels dropped slightly among the college students. based on these results, what should the researchers plan to do next to validate the findings? determine that moderate exercise is more beneficial at lowering cholesterol levels than intense exercise. do 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:

To validate the findings about how exercise affects cholesterol levels in different age - groups, more studies testing the effect of duration and intensity of exercise on cholesterol levels in different age groups are needed. Repeating the experiment with just college students won't account for age differences, and the initial statement about moderate vs intense exercise is not the next step to validate the overall finding.

Answer:

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