The use of methods to objectify the specific activities of athletes in training and competitions is not a problem studied to its true extent in wrestling. Measuring and evaluating the predictability components of competitive performance in this sport is even more important given the fact that in free and Greco-roman wrestling the elaboration of models has never been easy, due to the unquantifiable performance that performers have to achieve. Therefore, the issue is the most important field of research in the current stage in sports wrestling, before becoming an operational tool available to practitioners. The transformation of these components into figures allows obtaining results that can define the weight and impact they have in creating training and competitive models, selection models, planning, control and evaluation of the efficiency of training methods and especially the establishment of a battery of tests, usually validated by the method of factor analysis, to support periodic improvements by assimilating the progress in knowledge. From this point of view, we proposed the elaboration of the action strategy in order to increase the efficiency and highlight some components of the specific physical training model, whose materialization at the level of junior athletes decisively influenced the training activity, as a premise in obtaining the performance goals. Our experimental approach took place at the Dinamo Bucharest Sports Club, where the junior sports of the club and the national junior team trained. The training of the junior wrestlers from the Greco-roman style according to the parameters of the specific physical training model foreshadowed by us, demonstrated its efficiency and led to the modeling of the wrestling behavior and performance compatible with that of high-performance wrestlers.

The issue of this paper is focused on identifying the positive influence that the means of fitness exert on the human body, as well as the ways to practice it, as an option for adopting an active lifestyle. As a component of fitness, along with cardio-respiratory endurance, mobility and body composition, strength fully contributes to daily activities, with vigor and efficiency, and to increasing human performance, with effects on quality of life. Physical activity performed systematically, regularly contributes directly to improving the structure and functions of various organs and systems of the body. In the current pandemic context, exercising can counteract the appearance of anatomical and functional impairments or correct certain dysfunctions that occur as a result of improper living and / or working conditions (spending a long time in front of the computer, sedentary lifestyle, unhealthy diet). This topic is part of the concerns that link the goal of maintaining and improving health, with the development of a working concept in which exercise becomes a flexible tool to achieve the objectives of structural-functional development of adolescent girls and increase autonomy. in performing physical activity. In this regard, we started a study that investigated the impact of modern and traditional fitness techniques on the development of lower limb strength in adolescent girls. This study is part of the amelioration type research. The research took place at the National College „G. Moisil ”(Bucharest), on a sample of 40 students, aged between 15 and 16 years. The action systems used to develop strength were based on the principle of varying muscle tension. Following the intervention program and the support of the tests, statistical data showed an improvement in muscle strength in the lower limbs in the subjects of the experimental group, compared to the control group.