Why should the exercise professional should know the upper and lower limits of a pacemaker or implanted cardioverter defibrillator before exercising the patient?
a. the exercise professional needs to know the limits in order to maintain a level of exercising much lower than the bottom of the range
b. the exercise professional needs to know the limits in order to prevent exercising outside of the range
c. the exercise professional needs to know the limits in order to monitor for pacing issues when exercising outside of the range