Shisei means posture or body position and forms a not insignificant element in the basic judo techniques.
The goal of a judo throwing technique is to throw the partner/opponent accurately and spirited on the back. Significantly in the success of the throwing technique is the posture, as well as involved both TORI of UKE. A partner/opponent with a permanent stand and deep center of gravity can be much harder to throw than someone whose center of gravity is high and accordingly has held through the close set legs an unstable position.
It is distinguished as follows:
These two positions are different in the way of the respective positions of the feet to the body.
There is no general basic position, the body positions always arise by the constant change of attack and defense and are heavily dependent on the own or through the prescribed motions of UKE.