Sequential action, power generation and balance characteristics of a martial arts kick combination

ABSTRACT This paper presents a kinematic analysis of a kick combination action: Commonly performed, functional motion sequences are identified and, focusing on balance and sequential action characteristics, a classification of different kicking patterns of Pointfighting Martial Arts athletes is suggested. Vicon® motion analysis system was used to record 28 participants’ double side kick execution. Fighters were divided into groups determined by their highest tournament achievements (national and international athletes). A comprehensive biomechanical model was developed expanding on an existing functional phase model solely derived from the kicking leg motion. Supporting leg and thorax motion phases were added. Appropriate variables were defined and obtained to characterise balance and sequential kick action. The statistical analysis established that (a) better techniques are characterised by less directly supported dynamic balance conditions and (b) there is a clear proximal-to-distal sequence (PDMS) for each kick movement, whereby better fighters create more hip-abduction angular change and higher angular velocities at PDMS1 and more angular velocity during the knee extension of the second PDMS. Results indicate that better fighters show a higher variety in dynamic balance conditions, as well as a stronger focus in the first leg abduction and their second leg extension.