Caffeine, Exercise, and the Body

How does the amount of caffeine and the duration of time of exercise affect the blood pressure and heart rate of different genders?

A three-factor design-of-experiment was the chosen format of the experiment. The variables used were: gender (male or female), duration of exercise (two or five minutes) on a rowing machine, and the amount of caffeine administered (zero or twelve ounces). Sixteen people were tested, eight males and eight females. Blood pressure and heart rate were measured before administering caffeine, and then before and after exercising. (A two-minute wait was used after the person drank Mountain DewTM in order to let the caffeine get through the body.) The overall change in blood pressure were used for the final calculations.

Overall, females produced the greatest amount of change for both the blood pressure and heart rate. The factor that had its greatest effect was caffeine and the least was the duration of exercise.

Research Done By:

Lori Keisic
Cousino High School

Jon Gerlach
Sterling Heights High School