The purpose of the research is to identify the features of different approaches of environment influence on motor actions. Research methods. To determine the advantages, disadvantages and limitations of different approaches we analyzed the scientific literature. At the same time, for a deeper understanding of the functionality of various methods, they were directly tested on specific examples (in silico). The main method was computer modeling, including: 3D human body modeling, hydrodynamic forces modeling, modeling of motion kinematics in the environment. Research results. The article presents four approaches for assessing the environment influence on motor actions: 1) a qualitative analytical approach; 2) an approach based on the summation of forces in the system of levers of the human motor apparatus; 3) an approach based on computational fluid dynamics (CFD); 4) an approach based on recurrent physical and mathematical modeling. The most efficient is a qualitative analytical approach based on a comparison of the movement directions and forces action vectors. This approach allows getting a fundamental answer whether hydrodynamic forces contribute or hinder motor action without precise quantitative values.The approach based on the summation of forces allows determining the load on compression and twisting in specific joints. However it is applicable only for static or slow movements. Computational fluid dynamics (CFD) approach allows directly watching the flowing process and accurately calculating the nhydrodynamic forces. However, the approach does not take into account the influence of forces themselves on the propulsion and does not allow modeling complex trajectories of movement. The approach based on recurrent physical and mathematical modeling is the most universal because it let to calculate the motion kinematics. The approach has great prospects due to the possibility of configuring the algorithm and supplementing it with the necessary variables and coefficients. Conclusion. It is obvious that a complete analysis of the environment influence on the motor actions requires the use of all four presented approaches.