Repeatability of Choku-Tsuki and Oi-Tsuki in Shotokan Karate: A 3-Dimensional Analysis with Thirteen Black-Belt Karateka

Abstract

13 black-belt karateka performed two different standardized counter-offensive techniques. The trajectories of selected body landmarks were studied by using a computerized image analyzer that allows a 3-dimensional reconstruction of standardized movements. The repeatability of both karate techniques was quantified for each participant. Analysis confirmed that more experienced karateka obtained the best repeatability, as already demonstrated in a preliminary study conducted with a smaller sample of less experienced participants.