Rank in Judo a red-white paneled belt, and judokas who have attained the 9th Dan may wear a solid red belt. In some countries a red belt is used between the white and yellow belts to signify full membership of the judo club or the countries judo association. More commonly the red belt is, however, reserved only for 9th and 10th Dan practitioners. In some countries junior practitioners have an extra system in place to show the progress in between two kyū grades. The sub rank is symbolized by a small piece of fabric on the end of the belt. The colour of
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