Both BMC and BMD in Judo players have been reported to be significantly higher compared to those in sedentary control subjects [1,22]. Thus, Judo may have optimal osteogenic potential in both upper and lower extremities as specific strain-related variables are integrated into the dynamic loading conditions of Judo. The BMD in the arm region of Judo players has been reported to be significantly greater than that of sedentary control subjects [1].