Kata are formal exercises intended for practicing judo developed primarily by the founder of judo, Dr. Kanō Jigorō in harmony with the tradition of other martial arts (Kodokan, 2014; Kotani, 1970; Leggett, 1963; Otaki & Draeger, 1983; Yerkow, 1956). Katame-no-kata (Grappling Forms) was created after Nage-no-kata and is made up of fifteen representative techniques (originally ten until 1915), divided into three sets; osae-waza, shime-waza and kansetsu-waza (Bennett, 2009). In 1906 when the Butoku Kai kata were being formulated, Kanō submitted the fifteen techniques of katame-no-kata used by the Kōdōkan for consideration; they were accepted after some minor modifications (Bennett, 2009).
One of the reasons why Kōdōkan Judo has become so widespread in Japan and around the world is because randori and kata are ideal forms of exercise (Kano, 2005). Practicing katame-no-kata today is commonly in order to pass to dan grade and for kata competitions. Does osae-komi-waza as in katame-no-kata have a methodological, pedagogical and realistic value in teaching and practicing motoric movements in practicing ne-waza or not?
Are the techniques listed in that group applicable and realistic, or have they remained just a part of historic and traditional character of the growth of judo?