Võ phục not necessarily adopted by all practitioners, as evidenced throughout 1973-1990 when many practitioners under a separate development of Vovinam, the "Viet Vo Dao Federation," wore black uniforms. By 1990, however, after further meetings between councils, indigo had been adopted by the majority of Vovinam practitioners in and outside of Vietnam. Deep blue/indigo (Vietnamese: Lam) is now the internationally accepted color of Vo Phuc for Vietnamese martial arts. The "võ phục" of Vovinam are very similar, if not nearly identical, to the "keikogi" of Japanese martial arts. Both top and bottom of the uniform are constructed in much the same way
Sambo (martial art) out of then five) from judo's founder, Kano Jigoro. Spiridonov's background involved indigenous martial arts from various Soviet regions as well as an interest in Japanese jujutsu (though he never formally trained it). His reliance on movement over strength was in part because during World War I he received a bayonet wound which left his left arm lame. Both Oschepkov and Spiridonov independently hoped that Soviet military hand-to-hand combat techniques could be improved with an infusion of the techniques distilled from other foreign martial arts. Contrary to common lore, Oschepkov and Spiridonov did not cooperate on the development of their