The knee is the most complex angular-rotary joint that tolerates the greatest loads, and precisely because of this, it is prone to various injuries. Ruptures of the anterior cruciate ligament (ACL) account for 50 % of all knee injuries in athletes. The rehabilitation process of an ACL rupture doesn't have standardized protocols, but rather basic guidelines to guiding through a six to eighteen months recovery. On the other hand, a major health problem in sports is the increasingly frequent recurrence of ACL ruptures, which occur in the highest percentage in football, although the incidence is increasing in other sports as well. Recognizing risk factors such as neurological and biomechanical changes, psychological factors and fatigue is crucial in order to reduce the incidence. According to numerous studies, the period between the sixth and ninth months after ACL reconstruction is the most important for implementing an exercise program to reduce the incidence of recurrence. The thesis provides a detailed description of risk factors that increase the percentage of relapses, as well as a presentation of a functional phase of rehabilitation that will be used to adapt athletes to these factors and thus reduce their impact on the incidence of rerupture. This thesis describes a new direction of influence of different forms of exercise on existing risk factors and the worrying rate of recurrence of ACL rupture.