Rank in Judo English language edition (1955) of "Illustrated Kodokan Judo", edited by the Kōdōkan, says: This statement was later clarified, however. Essentially, the dan-rank system was capped at 10 after the death of Kanō. In that respect, in the November 1963 issue of "Jūdō", the Kōdōkan's official magazine, the Kōdōkan responding to the question "Do the 11th and 12th Dan really exist?" clarifies that the hierarchy now stops at 10 and that the Kōdōkan does not envisage any nominations to these grades. There have only been fifteen 10th dan promotions awarded by the Kōdōkan in the history of Judo. Although "dan" ranks
Judo in Canada notably in Japan. It has received relatively little attention in Canada, but Judo research has been conducted by Canadians working in several different disciplines. The most widely cited publications are journal articles and books written by sports scientists. The earliest, "A physiological profile of the Canadian judo team" by A.W. Taylor and L. Brassard, was published in "The Journal of Sports Medicine and Physical Fitness" in 1981. The similarly titled "Physiological profiles of the Canadian National Judo Team" was published by S.G. Thomas, M.H. Cox, Y.M. LeGal, T.J. Verde, and H.K. Smith in the "Canadian Journal of Sport Sciences" in