ZHANG, Z. ...et al., 2016. A novel phase-aligned analysis on motion patterns of table tennis strokes. International Journal of Performance Analysis in Sport, 16(1), pp. 305-316.
A wide range of human motion represent repetitive patterns particularly in racket
sports. Quantitative analysis of the continuous variables during the different phases of the motion cycle helps to investigate more deeply the specific movement of the racket or player. Table tennis biomechanics research to date lacks the necessary detail of phase decomposition and phase-based quantitative analysis. Therefore, this study proposes a novel velocity-based piecewise alignment method to identify the different phases of a table tennis forehand stroke. A controlled experiment was conducted on a number of players of two differing ability levels (experts vs. novices) to implement this novel methodology. Detailed results are shown for the quantitative analysis on multiple strokes of the two groups of participants. Significant differences were found in both the displacement and velocity of the racket movement in the backswing, forward swing and follow-through phases. For example, it is clear that experts strokes show higher racket resultant velocity than
novices during both the forward swing and follow-through phases by up to a factor
of two. Furthermore, the phase-based approach to analysing racket motions leads
to interrogation over a greater duration than the traditional time-based method
which is generally only concerned with impact ±0.25s.
This paper was accepted for publication in the journal International Journal of Performance Analysis in Sport and the definitive published version is available at http://www.ingentaconnect.com/content/uwic/ujpa/2016/00000016/00000001/art00024