Currently, domestic and international Judo standards specify some test methods on shock absorption of Judo floor and tatami. However, so far, the relation and validity of the indicators measured by the methods are not examined enough. Following the results on the safety in Ukemi, which were discussed in the previous paper, this paper aimed to examine the validity and applicability of the current test methods and indicators from the perspective of safety and playability in Tachi-waza and Ne-waza, as well as the safety in Ukemi.
