The analysis of the human body motions, as well as the postural analysis, are extremely important activities because they provide essential information about human biomechanics, depending on which systems and corrective exercises can be created to allow both an increase in the efficiency of individuals in the various fields in which they are involved (military, lucrative, domestic or sports), as well as an improvement in their quality of life. The actions undertaken in this regard are generally limited by the impossibility of performing non-invasive, ultra-precise measurements of the various body segments. Therefore, estimating the positions of human anatomical elements can be done in several ways, each of which has both advantages and disadvantages. Starting from this fact, in the action of choosing between the currently existing movement analysis systems, one will have to take into account both the qualitative and quantitative aspects of the provided results. [ABSTRACT FROM AUTHOR]