Techniques in martial arts can be singular or grouped together in sequences. When techniques are grouped together in sequences, the meter and the distribution of the technique inside a sequence creates the sequence's rhythm. Any disturbance or interruption of the regular flow of rhythm or the placement of rhythmic stresses or accents where they wouldn't normally occur is called syncopation. There are at least two frames of rhythm interpretation, one is an inter-sequence syncopation that is about the rhythm of singular techniques, and the other is the general rhythm of the combat, war or competition.
Syncopation in martial arts is a general term, just like it is in music theory. there is no limit to the number or variety of possible syncopated rhythms, nor are there limits to the ways they may be used. Syncopation can be executed in various manners. An extra technique may be introduced, an expected step omitted or the general tempo of the randori or tatakai can change in an unexpected manner.
In Ninjutsu kata, syncopation can be easily observed in the preliminary striking moves of the Kukishinden ryu techniques. Moreover, once the opponents grab each other, the general rhythm becomes chaotic but can be sometimes observed as consisting of static moments with bursts of syncopated action.