Abstract Summary
Nihon Kendo Kata, a form of practice where two individuals act out a predetermined protocol, is applied to assess skill level (dan grade) during the assessment for rank promotion in Kendo, a Japanese martial art. It is crucial to assess form for coaching using objective and quantitative methods. The objective is to suggest a novel quantification method using eye blinking (EB) regarding of synchronization within redundancy. Four novice, four skilled (3rd dan), and four advanced (4th dan) level men participated in the study (n=12). Each participant viewed a video illustrating a pair acting out the Nihon Kendo Kata five times. We estimated entropy as a marker using the average filtered response of the binary sequence corresponding to EB timings. We demonstrated that entropy increased with increasing dan grade, which led to the conclusion that skill classification using EB based on synchrony and redundancy is possible.
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