Multipanel Plane Movement Functional Trainer refers to the several planes of motion that the human body uses. Multi-planar training is a balanced program that tests the body in all three of the available planes of motion because there are three of them. For athletes, being functional in all planes of motion is essential. Multipanel Plane Movement Functional Trainer is safe to use. In sports, athletes frequently run at high speed, backpedal, shuffle side to side, and quickly turn to change directions.