The physical preparation aims to grow the level of the muscular strength by adopting different training methods, these methods distinguish themselves depending on the weigth, reps number, series number, execution speed and the rest time. The purpose of this article is to determine some series of ways and specific methods of the physical education lessons to see the development of the students’ strength from a department with economic profile. The improvement of the motricity strength quality was achieved by tweaking the methods from the physical education lessons, this fact is observable in the differences of the values from the initial and the final test. In this research was tested the primary muscular groups strength, the muscles of the abdomen, legs and arms, through crunches, squats, respectively the hanging maintain trial. The subjects involved in the experiment have the ages between 19 - 21 years old, are females und participate in the physical education lesson once a week for 100 minutes in accordance to the university policy. In the wake of the rendition of the outcomes, was proved the fact that the strength has reached a higher level than the initial one because of the systematically methods and ways chosen for that purpose.