C. Layton et P. Moran, Relationship between years training and performance time on the three Taikyoku kata for Shotokan karate black-belts, PERC MOT SK, 89(3), 1999, pp. 1176-1178
27 experienced black-belt subjects were individually timed on each of the t
hree Taikyoku kata and correlations calculated between performance time and
years training. Correlations were nonsignificant, more clearly clarifying
the reasons why performance time increases as years of training increases i
n more complex forms.