Mechanical principles  Center of mass  Base of support  Landing  Take off  Rotation  Action reaction

The center of mass is:  The balance point of a body.  The point around which all mass is distributed equally in all directions.  The meeting point of the three axes of rotation  Transverse (rotation forward or backward).  Longitudinal (twisting motion).  Anteroposterior (e.g: cartwheel).  The point around which the body rotates in space.

Base of support  The support base is the surface on which the body is held in equilibrium.  The suspension point is the point of contact for the body, with the center of mass hanging under the suspension point.

Landing principles  Using the largest possible number of joints.  Spreading the reception over the longest possible time.  Using the greatest possible body surface.

Take off principles  Use all of propulsive body parts.  Have a rigid body (tonic).  Use the non-supporting body parts.

To create rotation  The force must be applied outside the center of mass.  The body must be rigid.  The action must be applied from the point of contact.  The more distant the force from the center of mass, the more rotation generated

Action - reaction  “Every action produces an equal and opposite reaction.”  For example, if I apply a greater vertical force against the ground, I will go higher because the ground returns the same force against me.  Using a balance illustrates this concept. When a 50-kilogram person stands on a scale, it reads 50 kg. By contrast, when that same person contracts his muscles and applies a greater force by pushing on the scale, the scale indicates a higher weight.  If we refer to the last point of the analysis process, the moment when the force should be applied is when there is an equal and opposite force applied by the student.