Suwari Seoi Safety From Children Dojo to High Level Competition

There is no knowledge about tori (the performer) safety, connected to one specific technique in judo, suwari seoi: a two knees kneeling variation of the seoi-nage family, also known as drop seoi-nage. Objective of the study was to perform a thorough biomechanical analysis to understand the specific mechanics of suwari seoi throwing in order to link impact results with safety related to sudden trauma to tori’s knees. Participants analyzed range from children to high level athletes, testing all performances on IJF certified tatami. This paper provides an original and unique research about the mechanical properties of the impact of tori’s knees during the suwari seoi throwing and the safety analysis, regarding the sudden trauma to his knees.