The purpose of this study was to investigate the technical skills at 180 degrees changing direction for defence technique on man-to-man offense and defence at the water polo games, and to provide information to clarify the coaching program of the foot-workes.
1) In phase of the turn up back stroke, we found that the trained player has more standing body position,and the appearance that knee is drawn his body than un-trained players.
2) In phase of the changing direction, we found that the trained player has technique with twisting action at the upper and lower part of the body centered on his waist.
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