 He expanded this to include an investigation of Western boxing, karate and classical Japanese swordsmanship.Conversely when he made the suggestion to Ueshiba that aikidoka might benefit from a knowledge of the skilled striking techniques employed by karate practitioners his suggestion met with no enthusiasm.On a technical level the influence of judo great Kyuzo Mifune and classical jujutsu practitioner Sanjuro Oshima of the Gyokushin-ryu cannot be overstated.