The effect of the postural differences for the movement speed of initiation
2016 Volume 2 Issue 1 Pages 37-43
Details
2016 Volume 2 Issue 1 Pages 37-43
The purpose of this study was to investigate movement speed caused by the two pelvic tilt angle differences (neutral position (n.p) and posterior pelvic tilt (p.t)) at the starting position.
Thirteen highly trained collage soccer players chose. Each player stood on the force plate and sprinted to the goal (2.5m) at anytime on their start. The starting posture was stated in the two pelvic positions (neutral and posterior tilt). Each posture compare of GRF, EMG and COG were compared by each posture.
At the result, In right toe take off , motion time in group of p.t delayed. COG, in “At initial posing” and “start to trunk movement”, posterior tilt COG is more back. (p<0.05). In GRF, in Posterior tilt were less than neutral position both of horizontal and vertical (p<0.05). In EMG, in posterior tilt, BF and RA were less active. In timeline of inclination of trunk, Posterior tilt’s angle is bigger than neutral. After that, trunk moved back and forth than neutral. Pelvic posterior tilt cause to delay motion time for three factor that “Position of COG is more back at initial posing”, “Less of muscle power in hamstring”, “Too much trunk move”.
