Final answer:
The EP-C can implement the overload principle by manipulating the intensity, duration, and frequency of exercise.
Step-by-step explanation:
The EP-C, which stands for exercise physiologist-certified, can implement the overload principle by manipulating the intensity, duration, and frequency of exercise. The overload principle states that in order to see improvements in fitness and performance, the body must be subjected to a greater amount of stress than it is accustomed to. This can be achieved by increasing the intensity of the exercise, extending the duration of the exercise, or increasing the frequency of the exercise sessions. By adjusting these variables, the EP-C can create a progressive overload that challenges the body and stimulates adaptation.