| （1.Art School，Beijing Sport University，Beijing 100084，China；2.Department of Physical Education，China University of Geosciences，Beijing 100083，China) Abstract: By using the QUALISYS infrared light spot high speed movement capture system, the authors carried out kinematic analysis on the technical characteristics of difficulty movement C289 followed by A187 completed by five male competitive aerobic world champions, further clarified the correct technical mode of the difficulty combination, so as to provide a theoretical criterion for targeted and normative training. The authors revealed the following findings: 1) The taking-off of the athletes belongs to SSC, the bigger the shoulder and hip twisting angle, the more core anti-rotation energy can be stored; 2) In the process of soaring, the athletes could grasp the best moment for body bending, and the hip joint angles at the former difficulty body bending moment and at the latter difficulty hip lifting and body bending moment met rule requirements; 3) In the axis Z direction, the displacement of the center of gravity of the world cham-pions moved in a wavy way; their core control ability was strong; a higher soaring height is the precondition for com-pleting highly difficult moves and increasing move stability; 4) At the connecting stage, the athletes exploded their power mainly by elbow joint stretching during lifting, their A187 success rates were high; their hands and feet landed almost simultaneously; 5) According to the movement time characteristics, center of gravity displacement characteris-tics and kinematic parameters at various stages with respect to the difficulty combination, the authors derived the tech-nique quantified model of C289 followed by A187 completed by the world champions.
Key words: competitive aerobics；difficulty combination；technical characteristics；kinematic characteristic |
