| Summary: | 碩士 === 國立臺灣體育學院 === 體育研究所 === 90 === This study is tested by two National Players and adopted Novel Pressure （50Hz）and Redlake high speed camera（125f/s） synchronized experiment to collect and compare
the plantar pressure data variation of defender. To take decisive defense picture and analyze it so that one can presupposed action movement formalize attack model.
After discussion, this study conclude as below.
1. On defense preparation action, only in tackle throw back the plantar pressure on left foot is bigger than right one. Percentage on left foot is 51.5 while right foot is 48.5. This means the preparation action is on right hand side yet it is defense posture. For the rest three directions, the plantar pressure on right foot is bigger on defense preparation action.
2. There is one common phenomenon the dimension plantar pressure on right foot is bigger than left one. It indicates left foot use tiptoe while right foot is prepare for attack action movement.
3. The reaction phenomenon upon attack contact, plantar maximum power will be on right or left foot because of attack direction.
4. When adopt different attack direction, defender’s plantar pressure center and the body move forward to defend attack.
5. There should be have sets of combination attack action so that the attack techniques can be utilized continuously.
6. Break through stage,The defender’s plantar pressure indicate zero on one foot is common phenomenon.
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