 The Borg scale is used to evaluate the perception of effort during and after each session values ranging between 6 and 20. This is a very useful scale to determine intensity with beta blockers, auricular fibrillation, pace-makers or other conditions which may alter the normal response of the heart rate to exercise. The exercise is also monitored with respect to the emergence of symptoms. Aerobic exercise is done before the strength training to guarantee activation of the muscles and cardiovascular system. 